/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:35:01,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:35:01,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:35:01,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 13:35:02,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:35:02,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:35:02,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:35:02,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:35:02,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:35:02,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:35:02,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:35:02,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:35:02,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:35:02,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:35:02,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:35:02,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:35:02,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 13:35:02,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:35:02,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:35:02,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:35:02,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 13:35:02,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:35:02,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:35:02,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:35:02,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:35:02,074 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:35:02,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:35:02,074 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:35:02,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:35:02,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:35:02,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:35:02,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:35:02,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:35:02,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:35:02,076 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:35:02,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:35:02,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:35:02,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:35:02,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:35:02,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:35:02,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:35:02,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:35:02,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:35:02,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:35:02,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:35:02,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:35:02,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:35:02,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:35:02,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:35:02,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:35:02,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:35:02,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:35:02,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:35:02,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:35:02,367 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:35:02,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i [2021-05-02 13:35:02,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8f08cc7/d8de277cf494492d98da291e0833cfc8/FLAGd1ac58427 [2021-05-02 13:35:02,907 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:35:02,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i [2021-05-02 13:35:02,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8f08cc7/d8de277cf494492d98da291e0833cfc8/FLAGd1ac58427 [2021-05-02 13:35:03,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8f08cc7/d8de277cf494492d98da291e0833cfc8 [2021-05-02 13:35:03,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:35:03,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:35:03,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:35:03,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:35:03,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:35:03,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:35:03" (1/1) ... [2021-05-02 13:35:03,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571f8312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03, skipping insertion in model container [2021-05-02 13:35:03,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:35:03" (1/1) ... [2021-05-02 13:35:03,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:35:03,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:35:03,269 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-05-02 13:35:03,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:35:03,281 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:35:03,290 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-05-02 13:35:03,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:35:03,301 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:35:03,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03 WrapperNode [2021-05-02 13:35:03,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:35:03,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:35:03,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:35:03,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:35:03,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03" (1/1) ... [2021-05-02 13:35:03,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03" (1/1) ... [2021-05-02 13:35:03,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03" (1/1) ... [2021-05-02 13:35:03,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03" (1/1) ... [2021-05-02 13:35:03,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03" (1/1) ... [2021-05-02 13:35:03,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03" (1/1) ... [2021-05-02 13:35:03,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03" (1/1) ... [2021-05-02 13:35:03,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:35:03,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:35:03,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:35:03,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:35:03,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:35:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:35:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:35:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:35:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:35:03,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:35:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:35:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 13:35:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 13:35:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:35:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:35:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 13:35:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 13:35:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:35:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:35:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:35:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:35:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:35:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:35:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:35:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:35:03,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:35:03,702 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 13:35:03,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:35:03 BoogieIcfgContainer [2021-05-02 13:35:03,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:35:03,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:35:03,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:35:03,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:35:03,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:35:03" (1/3) ... [2021-05-02 13:35:03,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe51373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:35:03, skipping insertion in model container [2021-05-02 13:35:03,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:03" (2/3) ... [2021-05-02 13:35:03,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe51373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:35:03, skipping insertion in model container [2021-05-02 13:35:03,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:35:03" (3/3) ... [2021-05-02 13:35:03,708 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2021-05-02 13:35:03,712 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:35:03,715 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:35:03,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:35:03,749 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:35:03,749 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:35:03,750 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:35:03,750 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:35:03,750 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:35:03,750 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:35:03,750 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:35:03,750 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:35:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 13:35:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:35:03,770 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:03,771 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:03,771 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:03,778 INFO L82 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2021-05-02 13:35:03,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:03,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505003223] [2021-05-02 13:35:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:04,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:04,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505003223] [2021-05-02 13:35:04,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505003223] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:35:04,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:35:04,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 13:35:04,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995119065] [2021-05-02 13:35:04,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 13:35:04,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:04,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 13:35:04,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 13:35:04,035 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:04,148 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-05-02 13:35:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 13:35:04,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 13:35:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:04,154 INFO L225 Difference]: With dead ends: 33 [2021-05-02 13:35:04,154 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 13:35:04,156 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:35:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 13:35:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 13:35:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 13:35:04,180 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-02 13:35:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:04,180 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 13:35:04,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 13:35:04,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 13:35:04,181 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:04,181 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:04,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 13:35:04,181 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:04,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:04,182 INFO L82 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 1 times [2021-05-02 13:35:04,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:04,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616885524] [2021-05-02 13:35:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:04,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:04,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616885524] [2021-05-02 13:35:04,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616885524] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:04,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732149277] [2021-05-02 13:35:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:04,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 13:35:04,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:04,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:04,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:04,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732149277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:04,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:04,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-05-02 13:35:04,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213767980] [2021-05-02 13:35:04,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 13:35:04,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:04,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 13:35:04,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:35:04,414 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:04,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:04,468 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 13:35:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 13:35:04,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 13:35:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:04,469 INFO L225 Difference]: With dead ends: 20 [2021-05-02 13:35:04,469 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 13:35:04,470 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-02 13:35:04,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 13:35:04,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 13:35:04,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 13:35:04,473 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-02 13:35:04,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:04,473 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 13:35:04,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:04,473 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 13:35:04,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 13:35:04,474 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:04,474 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:04,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 13:35:04,681 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash 106583640, now seen corresponding path program 2 times [2021-05-02 13:35:04,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:04,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481009571] [2021-05-02 13:35:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:04,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:04,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:04,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481009571] [2021-05-02 13:35:04,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481009571] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:04,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704168491] [2021-05-02 13:35:04,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:04,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:35:04,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:04,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 13:35:04,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:04,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:04,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:04,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704168491] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:04,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:04,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-05-02 13:35:04,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461905327] [2021-05-02 13:35:04,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 13:35:04,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 13:35:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 13:35:04,824 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:04,922 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-02 13:35:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 13:35:04,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 13:35:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:04,923 INFO L225 Difference]: With dead ends: 21 [2021-05-02 13:35:04,923 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 13:35:04,925 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 86.7ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-02 13:35:04,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 13:35:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 13:35:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 13:35:04,934 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-05-02 13:35:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:04,934 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 13:35:04,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 13:35:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 13:35:04,935 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:04,935 INFO L523 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:05,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:05,140 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:05,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash -955485626, now seen corresponding path program 3 times [2021-05-02 13:35:05,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:05,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095863273] [2021-05-02 13:35:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:05,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:05,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:05,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095863273] [2021-05-02 13:35:05,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095863273] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:05,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381119326] [2021-05-02 13:35:05,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:05,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 13:35:05,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:05,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 13:35:05,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:05,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381119326] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:05,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:05,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2021-05-02 13:35:05,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117346704] [2021-05-02 13:35:05,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 13:35:05,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:05,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 13:35:05,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 13:35:05,272 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:05,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:05,369 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-05-02 13:35:05,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 13:35:05,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 13:35:05,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:05,370 INFO L225 Difference]: With dead ends: 22 [2021-05-02 13:35:05,370 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 13:35:05,371 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-05-02 13:35:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 13:35:05,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 13:35:05,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-02 13:35:05,373 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-05-02 13:35:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:05,374 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-02 13:35:05,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-02 13:35:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 13:35:05,374 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:05,374 INFO L523 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:05,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:05,575 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:05,576 INFO L82 PathProgramCache]: Analyzing trace with hash 480105496, now seen corresponding path program 4 times [2021-05-02 13:35:05,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:05,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560093638] [2021-05-02 13:35:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:05,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:05,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:05,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560093638] [2021-05-02 13:35:05,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560093638] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:05,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559705869] [2021-05-02 13:35:05,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:05,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:35:05,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:05,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 13:35:05,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:05,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:05,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559705869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:05,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:05,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2021-05-02 13:35:05,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844310423] [2021-05-02 13:35:05,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 13:35:05,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:05,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 13:35:05,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 13:35:05,790 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:05,926 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-05-02 13:35:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 13:35:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-02 13:35:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:05,927 INFO L225 Difference]: With dead ends: 23 [2021-05-02 13:35:05,927 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 13:35:05,927 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-05-02 13:35:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 13:35:05,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 13:35:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 13:35:05,930 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-05-02 13:35:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:05,930 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 13:35:05,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 13:35:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 13:35:05,931 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:05,931 INFO L523 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:06,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:06,133 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:06,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2033757318, now seen corresponding path program 5 times [2021-05-02 13:35:06,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:06,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634314420] [2021-05-02 13:35:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:06,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:06,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:06,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634314420] [2021-05-02 13:35:06,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634314420] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:06,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912310205] [2021-05-02 13:35:06,225 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:06,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-05-02 13:35:06,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:06,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 13:35:06,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:06,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,307 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:06,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912310205] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:06,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:06,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2021-05-02 13:35:06,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580178650] [2021-05-02 13:35:06,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 13:35:06,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:06,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 13:35:06,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-02 13:35:06,310 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:06,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:06,448 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-05-02 13:35:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 13:35:06,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 13:35:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:06,450 INFO L225 Difference]: With dead ends: 24 [2021-05-02 13:35:06,450 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 13:35:06,451 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2021-05-02 13:35:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 13:35:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 13:35:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-05-02 13:35:06,456 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2021-05-02 13:35:06,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:06,456 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-05-02 13:35:06,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:06,456 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-05-02 13:35:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 13:35:06,456 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:06,457 INFO L523 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:06,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 13:35:06,665 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1342643752, now seen corresponding path program 6 times [2021-05-02 13:35:06,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:06,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881532687] [2021-05-02 13:35:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:06,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:06,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:06,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881532687] [2021-05-02 13:35:06,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881532687] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:06,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525962791] [2021-05-02 13:35:06,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:06,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-05-02 13:35:06,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:06,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 13:35:06,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:06,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:06,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525962791] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:06,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:06,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2021-05-02 13:35:06,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77963510] [2021-05-02 13:35:06,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 13:35:06,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:06,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 13:35:06,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 13:35:06,861 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:07,062 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-05-02 13:35:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 13:35:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-05-02 13:35:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:07,063 INFO L225 Difference]: With dead ends: 25 [2021-05-02 13:35:07,063 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 13:35:07,063 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 181.9ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-02 13:35:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 13:35:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-02 13:35:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-05-02 13:35:07,066 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2021-05-02 13:35:07,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:07,066 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-05-02 13:35:07,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-05-02 13:35:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 13:35:07,067 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:07,067 INFO L523 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:07,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:07,275 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:07,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1363105478, now seen corresponding path program 7 times [2021-05-02 13:35:07,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:07,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085083300] [2021-05-02 13:35:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:07,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:07,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:07,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085083300] [2021-05-02 13:35:07,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085083300] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:07,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310757064] [2021-05-02 13:35:07,367 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:07,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 13:35:07,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:07,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:07,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310757064] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:07,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:07,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2021-05-02 13:35:07,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096279052] [2021-05-02 13:35:07,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 13:35:07,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:07,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 13:35:07,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 13:35:07,464 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:07,672 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-05-02 13:35:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 13:35:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-02 13:35:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:07,672 INFO L225 Difference]: With dead ends: 26 [2021-05-02 13:35:07,672 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 13:35:07,673 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 188.4ms TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2021-05-02 13:35:07,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 13:35:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-05-02 13:35:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-05-02 13:35:07,676 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2021-05-02 13:35:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:07,676 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-05-02 13:35:07,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-05-02 13:35:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 13:35:07,676 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:07,676 INFO L523 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:07,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:07,889 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:07,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:07,889 INFO L82 PathProgramCache]: Analyzing trace with hash -658014312, now seen corresponding path program 8 times [2021-05-02 13:35:07,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:07,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719582970] [2021-05-02 13:35:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:07,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:07,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719582970] [2021-05-02 13:35:07,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719582970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:07,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862729413] [2021-05-02 13:35:07,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:08,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:35:08,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:08,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 13:35:08,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:08,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:08,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862729413] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:08,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:08,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2021-05-02 13:35:08,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141186857] [2021-05-02 13:35:08,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 13:35:08,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:08,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 13:35:08,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-02 13:35:08,082 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:08,248 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-05-02 13:35:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 13:35:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-05-02 13:35:08,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:08,249 INFO L225 Difference]: With dead ends: 27 [2021-05-02 13:35:08,249 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 13:35:08,250 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 185.5ms TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2021-05-02 13:35:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 13:35:08,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-02 13:35:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-05-02 13:35:08,252 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2021-05-02 13:35:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:08,253 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-05-02 13:35:08,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-05-02 13:35:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 13:35:08,253 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:08,253 INFO L523 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:08,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 13:35:08,461 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1111781638, now seen corresponding path program 9 times [2021-05-02 13:35:08,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:08,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250283428] [2021-05-02 13:35:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:08,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:08,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:08,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250283428] [2021-05-02 13:35:08,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250283428] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:08,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627828895] [2021-05-02 13:35:08,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:08,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 13:35:08,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:08,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 13:35:08,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:08,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:08,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627828895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:08,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:08,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 13 [2021-05-02 13:35:08,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849908431] [2021-05-02 13:35:08,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 13:35:08,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:08,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 13:35:08,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 13:35:08,654 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:08,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:08,850 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-05-02 13:35:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 13:35:08,851 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-02 13:35:08,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:08,851 INFO L225 Difference]: With dead ends: 28 [2021-05-02 13:35:08,851 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 13:35:08,852 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 220.6ms TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2021-05-02 13:35:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 13:35:08,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-05-02 13:35:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-05-02 13:35:08,854 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2021-05-02 13:35:08,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:08,855 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-05-02 13:35:08,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-05-02 13:35:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 13:35:08,855 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:08,855 INFO L523 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:09,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:09,069 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:09,069 INFO L82 PathProgramCache]: Analyzing trace with hash 140881240, now seen corresponding path program 10 times [2021-05-02 13:35:09,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:09,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176926421] [2021-05-02 13:35:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:09,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:09,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176926421] [2021-05-02 13:35:09,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176926421] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:09,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174747033] [2021-05-02 13:35:09,169 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:09,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:35:09,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:09,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 13:35:09,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:09,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:09,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174747033] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:09,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:09,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 14 [2021-05-02 13:35:09,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724909163] [2021-05-02 13:35:09,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 13:35:09,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:09,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 13:35:09,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 13:35:09,282 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:09,555 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-05-02 13:35:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 13:35:09,556 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-05-02 13:35:09,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:09,556 INFO L225 Difference]: With dead ends: 29 [2021-05-02 13:35:09,556 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 13:35:09,557 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 274.1ms TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2021-05-02 13:35:09,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 13:35:09,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 13:35:09,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-05-02 13:35:09,559 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2021-05-02 13:35:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:09,560 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-05-02 13:35:09,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-05-02 13:35:09,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 13:35:09,560 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:09,560 INFO L523 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:09,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:09,784 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:09,785 INFO L82 PathProgramCache]: Analyzing trace with hash 107739974, now seen corresponding path program 11 times [2021-05-02 13:35:09,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:09,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149935954] [2021-05-02 13:35:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:09,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:09,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:09,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149935954] [2021-05-02 13:35:09,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149935954] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:09,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619019120] [2021-05-02 13:35:09,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:09,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-05-02 13:35:09,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:09,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 13:35:09,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:09,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:09,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:10,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619019120] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:10,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:10,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 15 [2021-05-02 13:35:10,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011257949] [2021-05-02 13:35:10,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 13:35:10,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:10,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 13:35:10,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 13:35:10,006 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:10,272 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-05-02 13:35:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 13:35:10,273 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-02 13:35:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:10,274 INFO L225 Difference]: With dead ends: 30 [2021-05-02 13:35:10,274 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 13:35:10,274 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 279.8ms TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2021-05-02 13:35:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 13:35:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 13:35:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-05-02 13:35:10,280 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2021-05-02 13:35:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:10,280 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-05-02 13:35:10,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-05-02 13:35:10,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 13:35:10,282 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:10,282 INFO L523 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:10,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 13:35:10,493 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:10,493 INFO L82 PathProgramCache]: Analyzing trace with hash -919639272, now seen corresponding path program 12 times [2021-05-02 13:35:10,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:10,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607353058] [2021-05-02 13:35:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:10,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:10,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:10,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607353058] [2021-05-02 13:35:10,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607353058] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:10,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900570064] [2021-05-02 13:35:10,621 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:10,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 13:35:10,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:10,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 13:35:10,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:10,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:10,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900570064] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:10,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:10,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 16 [2021-05-02 13:35:10,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306600247] [2021-05-02 13:35:10,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 13:35:10,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 13:35:10,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 13:35:10,714 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:11,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:11,008 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-05-02 13:35:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 13:35:11,009 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-05-02 13:35:11,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:11,009 INFO L225 Difference]: With dead ends: 31 [2021-05-02 13:35:11,009 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 13:35:11,010 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 334.7ms TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2021-05-02 13:35:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 13:35:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-02 13:35:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-05-02 13:35:11,012 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2021-05-02 13:35:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:11,012 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-05-02 13:35:11,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-05-02 13:35:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 13:35:11,013 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:11,013 INFO L523 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:11,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 13:35:11,225 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:11,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:11,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1591342470, now seen corresponding path program 13 times [2021-05-02 13:35:11,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:11,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790205741] [2021-05-02 13:35:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:11,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:11,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790205741] [2021-05-02 13:35:11,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790205741] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:11,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822040511] [2021-05-02 13:35:11,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:11,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 13:35:11,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:11,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:11,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822040511] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:11,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:11,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 17 [2021-05-02 13:35:11,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076430582] [2021-05-02 13:35:11,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 13:35:11,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:11,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 13:35:11,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-02 13:35:11,460 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:11,797 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-05-02 13:35:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 13:35:11,798 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-05-02 13:35:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:11,798 INFO L225 Difference]: With dead ends: 32 [2021-05-02 13:35:11,798 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 13:35:11,798 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 331.2ms TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2021-05-02 13:35:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 13:35:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 13:35:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-05-02 13:35:11,801 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2021-05-02 13:35:11,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:11,801 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-05-02 13:35:11,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-05-02 13:35:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 13:35:11,802 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:11,802 INFO L523 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:12,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 13:35:12,013 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:12,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:12,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2122365144, now seen corresponding path program 14 times [2021-05-02 13:35:12,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:12,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028758093] [2021-05-02 13:35:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:12,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:12,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028758093] [2021-05-02 13:35:12,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028758093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:12,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417951097] [2021-05-02 13:35:12,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:12,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:35:12,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:12,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 13:35:12,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:12,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:12,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417951097] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:12,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:12,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 18 [2021-05-02 13:35:12,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32010537] [2021-05-02 13:35:12,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 13:35:12,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:12,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 13:35:12,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 13:35:12,258 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:12,604 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-05-02 13:35:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 13:35:12,604 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-05-02 13:35:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:12,605 INFO L225 Difference]: With dead ends: 33 [2021-05-02 13:35:12,605 INFO L226 Difference]: Without dead ends: 28 [2021-05-02 13:35:12,605 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 375.0ms TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 13:35:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-02 13:35:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-05-02 13:35:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-05-02 13:35:12,608 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2021-05-02 13:35:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:12,608 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-05-02 13:35:12,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:12,608 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-05-02 13:35:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 13:35:12,608 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:12,608 INFO L523 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:12,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:12,819 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:12,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:12,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1404198854, now seen corresponding path program 15 times [2021-05-02 13:35:12,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:12,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126311223] [2021-05-02 13:35:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:12,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:12,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126311223] [2021-05-02 13:35:12,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126311223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:12,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275957875] [2021-05-02 13:35:12,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:13,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-05-02 13:35:13,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:13,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 13:35:13,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:13,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:13,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275957875] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:13,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:13,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 19 [2021-05-02 13:35:13,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939873435] [2021-05-02 13:35:13,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 13:35:13,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:13,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 13:35:13,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 13:35:13,069 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:13,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:13,397 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-05-02 13:35:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 13:35:13,398 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-02 13:35:13,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:13,398 INFO L225 Difference]: With dead ends: 34 [2021-05-02 13:35:13,398 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 13:35:13,399 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 404.8ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 13:35:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 13:35:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 13:35:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-05-02 13:35:13,401 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2021-05-02 13:35:13,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:13,401 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-05-02 13:35:13,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-05-02 13:35:13,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 13:35:13,402 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:13,402 INFO L523 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:13,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 13:35:13,617 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash 615880344, now seen corresponding path program 16 times [2021-05-02 13:35:13,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:13,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374237550] [2021-05-02 13:35:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:13,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:13,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:13,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374237550] [2021-05-02 13:35:13,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374237550] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:13,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85402203] [2021-05-02 13:35:13,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:13,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:35:13,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:13,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 13:35:13,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:13,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:13,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85402203] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:13,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:13,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 20 [2021-05-02 13:35:13,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745342170] [2021-05-02 13:35:13,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 13:35:13,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:13,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 13:35:13,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-05-02 13:35:13,896 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:14,281 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-05-02 13:35:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 13:35:14,282 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-05-02 13:35:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:14,282 INFO L225 Difference]: With dead ends: 35 [2021-05-02 13:35:14,282 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 13:35:14,283 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 448.6ms TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 13:35:14,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 13:35:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 13:35:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-05-02 13:35:14,285 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2021-05-02 13:35:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:14,285 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-05-02 13:35:14,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-05-02 13:35:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 13:35:14,286 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:14,286 INFO L523 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:14,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 13:35:14,497 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:14,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:14,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1947810310, now seen corresponding path program 17 times [2021-05-02 13:35:14,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:14,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830689165] [2021-05-02 13:35:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:14,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:14,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830689165] [2021-05-02 13:35:14,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830689165] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:14,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930196726] [2021-05-02 13:35:14,709 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:14,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-05-02 13:35:14,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:14,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 13:35:14,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:14,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:14,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930196726] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:14,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:14,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 21 [2021-05-02 13:35:14,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563045319] [2021-05-02 13:35:14,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 13:35:14,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:14,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 13:35:14,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 13:35:14,830 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:15,274 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-05-02 13:35:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 13:35:15,274 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-02 13:35:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:15,275 INFO L225 Difference]: With dead ends: 36 [2021-05-02 13:35:15,275 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 13:35:15,275 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 509.9ms TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 13:35:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 13:35:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-02 13:35:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-05-02 13:35:15,278 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2021-05-02 13:35:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:15,278 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-05-02 13:35:15,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-05-02 13:35:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-02 13:35:15,278 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:15,278 INFO L523 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:15,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 13:35:15,479 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:15,480 INFO L82 PathProgramCache]: Analyzing trace with hash 287966296, now seen corresponding path program 18 times [2021-05-02 13:35:15,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:15,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493036400] [2021-05-02 13:35:15,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:15,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:15,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:15,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493036400] [2021-05-02 13:35:15,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493036400] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:15,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442739324] [2021-05-02 13:35:15,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:15,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-02 13:35:15,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:15,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 13:35:15,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:15,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:15,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442739324] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:15,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:15,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 22 [2021-05-02 13:35:15,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304166911] [2021-05-02 13:35:15,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 13:35:15,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:15,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 13:35:15,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 13:35:15,771 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:16,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:16,164 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-05-02 13:35:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 13:35:16,164 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-05-02 13:35:16,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:16,165 INFO L225 Difference]: With dead ends: 37 [2021-05-02 13:35:16,165 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 13:35:16,165 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 499.0ms TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 13:35:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 13:35:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 13:35:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:16,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-05-02 13:35:16,168 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2021-05-02 13:35:16,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:16,168 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-05-02 13:35:16,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-05-02 13:35:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 13:35:16,168 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:16,168 INFO L523 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:16,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:16,382 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:16,382 INFO L82 PathProgramCache]: Analyzing trace with hash 372409414, now seen corresponding path program 19 times [2021-05-02 13:35:16,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:16,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774821539] [2021-05-02 13:35:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:16,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:16,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774821539] [2021-05-02 13:35:16,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774821539] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:16,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163933389] [2021-05-02 13:35:16,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:16,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 13:35:16,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:16,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:16,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163933389] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:16,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:16,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 23 [2021-05-02 13:35:16,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542703268] [2021-05-02 13:35:16,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 13:35:16,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:16,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 13:35:16,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 13:35:16,715 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 23 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:17,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:17,196 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-05-02 13:35:17,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 13:35:17,197 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-02 13:35:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:17,197 INFO L225 Difference]: With dead ends: 38 [2021-05-02 13:35:17,197 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 13:35:17,198 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 547.5ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 13:35:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 13:35:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-02 13:35:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-05-02 13:35:17,201 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2021-05-02 13:35:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:17,201 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-05-02 13:35:17,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-05-02 13:35:17,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-02 13:35:17,201 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:17,201 INFO L523 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:17,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:17,417 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:17,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:17,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1304821224, now seen corresponding path program 20 times [2021-05-02 13:35:17,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:17,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784427617] [2021-05-02 13:35:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:17,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:17,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:17,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784427617] [2021-05-02 13:35:17,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784427617] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:17,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690666597] [2021-05-02 13:35:17,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:17,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:35:17,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:17,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 13:35:17,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:17,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:17,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690666597] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:17,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:17,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 24 [2021-05-02 13:35:17,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697804593] [2021-05-02 13:35:17,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 13:35:17,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:17,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 13:35:17,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 13:35:17,753 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:18,253 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-05-02 13:35:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 13:35:18,254 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-05-02 13:35:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:18,254 INFO L225 Difference]: With dead ends: 39 [2021-05-02 13:35:18,254 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 13:35:18,255 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 607.0ms TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 13:35:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 13:35:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 13:35:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-05-02 13:35:18,258 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2021-05-02 13:35:18,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:18,258 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-05-02 13:35:18,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:18,258 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-05-02 13:35:18,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 13:35:18,258 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:18,259 INFO L523 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:18,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 13:35:18,465 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:18,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1759363450, now seen corresponding path program 21 times [2021-05-02 13:35:18,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:18,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020010613] [2021-05-02 13:35:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:18,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:18,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:18,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020010613] [2021-05-02 13:35:18,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020010613] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:18,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200629794] [2021-05-02 13:35:18,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:18,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-05-02 13:35:18,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:18,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 13:35:18,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:18,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:18,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200629794] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:18,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:18,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 25 [2021-05-02 13:35:18,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295898772] [2021-05-02 13:35:18,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 13:35:18,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:18,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 13:35:18,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 13:35:18,805 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:19,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:19,355 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-05-02 13:35:19,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 13:35:19,356 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-05-02 13:35:19,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:19,356 INFO L225 Difference]: With dead ends: 40 [2021-05-02 13:35:19,356 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 13:35:19,357 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 642.3ms TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 13:35:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 13:35:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 13:35:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-05-02 13:35:19,360 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2021-05-02 13:35:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:19,360 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-05-02 13:35:19,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-05-02 13:35:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 13:35:19,360 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:19,360 INFO L523 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:19,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 13:35:19,561 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:19,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1329696728, now seen corresponding path program 22 times [2021-05-02 13:35:19,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:19,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791890317] [2021-05-02 13:35:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:19,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:19,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:19,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791890317] [2021-05-02 13:35:19,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791890317] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:19,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285897367] [2021-05-02 13:35:19,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:19,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:35:19,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:19,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 13:35:19,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:19,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:19,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285897367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:19,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:19,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 26 [2021-05-02 13:35:19,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814216409] [2021-05-02 13:35:19,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 13:35:19,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 13:35:19,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-02 13:35:19,932 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:20,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:20,514 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-05-02 13:35:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 13:35:20,514 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-05-02 13:35:20,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:20,514 INFO L225 Difference]: With dead ends: 41 [2021-05-02 13:35:20,514 INFO L226 Difference]: Without dead ends: 36 [2021-05-02 13:35:20,515 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 732.9ms TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 13:35:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-02 13:35:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-02 13:35:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-05-02 13:35:20,517 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2021-05-02 13:35:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:20,518 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-05-02 13:35:20,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-05-02 13:35:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 13:35:20,518 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:20,518 INFO L523 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:20,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:20,725 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:20,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1693685562, now seen corresponding path program 23 times [2021-05-02 13:35:20,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:20,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768133039] [2021-05-02 13:35:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:20,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:20,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:20,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768133039] [2021-05-02 13:35:20,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768133039] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:20,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870934700] [2021-05-02 13:35:20,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:21,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-05-02 13:35:21,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:21,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 13:35:21,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:21,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:21,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870934700] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:21,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:21,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 27 [2021-05-02 13:35:21,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426534014] [2021-05-02 13:35:21,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 13:35:21,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:21,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 13:35:21,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 13:35:21,128 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:21,733 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-05-02 13:35:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 13:35:21,734 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-02 13:35:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:21,734 INFO L225 Difference]: With dead ends: 42 [2021-05-02 13:35:21,734 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 13:35:21,735 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 730.9ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 13:35:21,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 13:35:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-05-02 13:35:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-05-02 13:35:21,738 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2021-05-02 13:35:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:21,739 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-05-02 13:35:21,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-05-02 13:35:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 13:35:21,739 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:21,739 INFO L523 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:21,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 13:35:21,949 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:21,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:21,949 INFO L82 PathProgramCache]: Analyzing trace with hash -929256040, now seen corresponding path program 24 times [2021-05-02 13:35:21,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:21,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775783493] [2021-05-02 13:35:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:22,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:22,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:22,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775783493] [2021-05-02 13:35:22,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775783493] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:22,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909865928] [2021-05-02 13:35:22,217 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:22,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 13:35:22,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:22,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 13:35:22,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:22,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:22,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909865928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:22,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:22,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 28 [2021-05-02 13:35:22,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470851924] [2021-05-02 13:35:22,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 13:35:22,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 13:35:22,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 13:35:22,350 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:22,981 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-05-02 13:35:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 13:35:22,982 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-05-02 13:35:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:22,982 INFO L225 Difference]: With dead ends: 43 [2021-05-02 13:35:22,982 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 13:35:22,983 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 774.4ms TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 13:35:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 13:35:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 13:35:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-05-02 13:35:22,994 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2021-05-02 13:35:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:22,994 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-05-02 13:35:22,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-05-02 13:35:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 13:35:22,994 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:22,994 INFO L523 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:23,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:23,195 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:23,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:23,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1293222662, now seen corresponding path program 25 times [2021-05-02 13:35:23,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:23,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610458751] [2021-05-02 13:35:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:23,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:23,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:23,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610458751] [2021-05-02 13:35:23,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610458751] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:23,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448775669] [2021-05-02 13:35:23,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:23,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 13:35:23,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:23,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:23,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448775669] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:23,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:23,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 29 [2021-05-02 13:35:23,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915347220] [2021-05-02 13:35:23,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 13:35:23,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:23,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 13:35:23,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-02 13:35:23,600 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:24,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:24,289 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-05-02 13:35:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 13:35:24,290 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-02 13:35:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:24,290 INFO L225 Difference]: With dead ends: 44 [2021-05-02 13:35:24,291 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 13:35:24,291 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 830.7ms TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 13:35:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 13:35:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-02 13:35:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-05-02 13:35:24,294 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2021-05-02 13:35:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:24,294 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-05-02 13:35:24,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:24,294 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-05-02 13:35:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 13:35:24,295 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:24,295 INFO L523 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:24,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 13:35:24,499 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:24,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1470585688, now seen corresponding path program 26 times [2021-05-02 13:35:24,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:24,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461881936] [2021-05-02 13:35:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:24,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:24,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:24,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461881936] [2021-05-02 13:35:24,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461881936] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:24,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926342387] [2021-05-02 13:35:24,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:24,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:35:24,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:24,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 13:35:24,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:24,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:24,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926342387] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:24,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:24,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 30 [2021-05-02 13:35:24,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544789238] [2021-05-02 13:35:24,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 13:35:24,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:24,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 13:35:24,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 13:35:24,914 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 30 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:25,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:25,607 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-05-02 13:35:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 13:35:25,607 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-05-02 13:35:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:25,607 INFO L225 Difference]: With dead ends: 45 [2021-05-02 13:35:25,607 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 13:35:25,608 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 896.6ms TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 13:35:25,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 13:35:25,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-02 13:35:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:25,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-05-02 13:35:25,610 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2021-05-02 13:35:25,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:25,611 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-05-02 13:35:25,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-05-02 13:35:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 13:35:25,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:25,611 INFO L523 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:25,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 13:35:25,813 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:25,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1621095098, now seen corresponding path program 27 times [2021-05-02 13:35:25,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:25,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618369787] [2021-05-02 13:35:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:26,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:26,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618369787] [2021-05-02 13:35:26,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618369787] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:26,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269934750] [2021-05-02 13:35:26,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:26,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-05-02 13:35:26,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:26,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 13:35:26,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:26,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:26,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269934750] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:26,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:26,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 31 [2021-05-02 13:35:26,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19226457] [2021-05-02 13:35:26,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 13:35:26,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:26,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 13:35:26,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 13:35:26,266 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 31 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:26,991 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-05-02 13:35:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 13:35:26,991 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-02 13:35:26,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:26,992 INFO L225 Difference]: With dead ends: 46 [2021-05-02 13:35:26,992 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 13:35:26,993 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 904.1ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 13:35:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 13:35:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-02 13:35:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-05-02 13:35:26,995 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2021-05-02 13:35:26,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:26,995 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-05-02 13:35:26,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-05-02 13:35:26,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 13:35:26,995 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:26,995 INFO L523 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:27,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 13:35:27,197 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:27,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:27,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1321048344, now seen corresponding path program 28 times [2021-05-02 13:35:27,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:27,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725987355] [2021-05-02 13:35:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:27,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:27,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725987355] [2021-05-02 13:35:27,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725987355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:27,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951111251] [2021-05-02 13:35:27,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:27,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:35:27,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:27,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 13:35:27,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:27,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:27,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951111251] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:27,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:27,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 32 [2021-05-02 13:35:27,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460909184] [2021-05-02 13:35:27,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 13:35:27,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:27,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 13:35:27,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-05-02 13:35:27,703 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 32 states, 32 states have (on average 1.15625) internal successors, (37), 31 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:28,471 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-05-02 13:35:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 13:35:28,471 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 31 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-05-02 13:35:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:28,472 INFO L225 Difference]: With dead ends: 47 [2021-05-02 13:35:28,472 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 13:35:28,473 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 983.7ms TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 13:35:28,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 13:35:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 13:35:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-05-02 13:35:28,475 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2021-05-02 13:35:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:28,475 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-05-02 13:35:28,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 31 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-05-02 13:35:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 13:35:28,475 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:28,475 INFO L523 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:28,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 13:35:28,676 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1961785466, now seen corresponding path program 29 times [2021-05-02 13:35:28,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:28,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880667527] [2021-05-02 13:35:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:29,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:29,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:29,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880667527] [2021-05-02 13:35:29,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880667527] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:29,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674016251] [2021-05-02 13:35:29,036 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:29,083 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-05-02 13:35:29,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:29,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 13:35:29,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:29,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:29,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674016251] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:29,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:29,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 33 [2021-05-02 13:35:29,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592773500] [2021-05-02 13:35:29,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 13:35:29,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:29,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 13:35:29,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 13:35:29,169 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:29,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:29,952 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-05-02 13:35:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 13:35:29,952 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-02 13:35:29,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:29,952 INFO L225 Difference]: With dead ends: 48 [2021-05-02 13:35:29,952 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 13:35:29,953 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1026.0ms TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 13:35:29,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 13:35:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-02 13:35:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-05-02 13:35:29,956 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2021-05-02 13:35:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:29,956 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-05-02 13:35:29,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:29,956 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-05-02 13:35:29,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-02 13:35:29,956 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:29,956 INFO L523 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:30,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:30,169 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:30,169 INFO L82 PathProgramCache]: Analyzing trace with hash -650418472, now seen corresponding path program 30 times [2021-05-02 13:35:30,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:30,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251177886] [2021-05-02 13:35:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:30,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:30,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251177886] [2021-05-02 13:35:30,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251177886] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:30,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149819580] [2021-05-02 13:35:30,553 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:30,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-05-02 13:35:30,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:30,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 13:35:30,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:30,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:30,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149819580] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:30,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:30,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 34 [2021-05-02 13:35:30,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452425345] [2021-05-02 13:35:30,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 13:35:30,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:30,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 13:35:30,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 13:35:30,681 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:31,499 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-05-02 13:35:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 13:35:31,499 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-05-02 13:35:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:31,500 INFO L225 Difference]: With dead ends: 49 [2021-05-02 13:35:31,500 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 13:35:31,501 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1102.6ms TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 13:35:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 13:35:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-02 13:35:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-05-02 13:35:31,503 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2021-05-02 13:35:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:31,503 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-05-02 13:35:31,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-05-02 13:35:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 13:35:31,503 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:31,504 INFO L523 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:31,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:31,711 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:31,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:31,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1347252678, now seen corresponding path program 31 times [2021-05-02 13:35:31,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:31,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702804327] [2021-05-02 13:35:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:32,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:32,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702804327] [2021-05-02 13:35:32,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702804327] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:32,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983055015] [2021-05-02 13:35:32,188 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:32,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 13:35:32,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:32,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983055015] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:32,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:32,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 35 [2021-05-02 13:35:32,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409390967] [2021-05-02 13:35:32,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 13:35:32,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:32,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 13:35:32,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 13:35:32,316 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:33,201 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-05-02 13:35:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 13:35:33,202 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-02 13:35:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:33,202 INFO L225 Difference]: With dead ends: 50 [2021-05-02 13:35:33,202 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 13:35:33,203 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1225.1ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 13:35:33,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 13:35:33,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-05-02 13:35:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-05-02 13:35:33,205 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2021-05-02 13:35:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:33,205 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-05-02 13:35:33,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-05-02 13:35:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-02 13:35:33,206 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:33,206 INFO L523 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:33,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:33,406 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:33,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:33,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1149451112, now seen corresponding path program 32 times [2021-05-02 13:35:33,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:33,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627818987] [2021-05-02 13:35:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:33,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:33,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627818987] [2021-05-02 13:35:33,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627818987] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:33,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835409609] [2021-05-02 13:35:33,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:33,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:35:33,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:33,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 13:35:33,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:33,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:33,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835409609] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:33,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:33,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 36 [2021-05-02 13:35:33,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148457801] [2021-05-02 13:35:33,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 13:35:33,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:33,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 13:35:33,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 13:35:33,978 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:34,892 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-05-02 13:35:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 13:35:34,893 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-05-02 13:35:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:34,893 INFO L225 Difference]: With dead ends: 51 [2021-05-02 13:35:34,893 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 13:35:34,894 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1193.4ms TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 13:35:34,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 13:35:34,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-02 13:35:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-05-02 13:35:34,896 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2021-05-02 13:35:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:34,896 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-05-02 13:35:34,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-05-02 13:35:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 13:35:34,896 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:34,896 INFO L523 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:35,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 13:35:35,101 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1237857274, now seen corresponding path program 33 times [2021-05-02 13:35:35,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:35,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848983447] [2021-05-02 13:35:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:35,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:35,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848983447] [2021-05-02 13:35:35,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848983447] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:35,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650924518] [2021-05-02 13:35:35,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:35,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 13:35:35,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:35,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 13:35:35,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:35,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:35,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650924518] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:35,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:35,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 37 [2021-05-02 13:35:35,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087857331] [2021-05-02 13:35:35,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 13:35:35,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:35,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 13:35:35,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 13:35:35,677 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 37 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:36,606 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-05-02 13:35:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 13:35:36,606 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-02 13:35:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:36,607 INFO L225 Difference]: With dead ends: 52 [2021-05-02 13:35:36,607 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 13:35:36,607 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1243.9ms TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 13:35:36,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 13:35:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-02 13:35:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-05-02 13:35:36,610 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2021-05-02 13:35:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:36,610 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-05-02 13:35:36,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-05-02 13:35:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-02 13:35:36,610 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:36,610 INFO L523 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:36,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:36,817 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:36,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:36,818 INFO L82 PathProgramCache]: Analyzing trace with hash 316519000, now seen corresponding path program 34 times [2021-05-02 13:35:36,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:36,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60759897] [2021-05-02 13:35:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:37,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:37,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60759897] [2021-05-02 13:35:37,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60759897] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:37,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681931884] [2021-05-02 13:35:37,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:37,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:35:37,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:37,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 13:35:37,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:37,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:37,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681931884] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:37,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:37,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 38 [2021-05-02 13:35:37,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930916478] [2021-05-02 13:35:37,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 13:35:37,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:37,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 13:35:37,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 13:35:37,516 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:38,569 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-05-02 13:35:38,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 13:35:38,569 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-05-02 13:35:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:38,569 INFO L225 Difference]: With dead ends: 53 [2021-05-02 13:35:38,569 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 13:35:38,570 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1435.9ms TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 13:35:38,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 13:35:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 13:35:38,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-05-02 13:35:38,572 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2021-05-02 13:35:38,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:38,572 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-05-02 13:35:38,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-05-02 13:35:38,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 13:35:38,573 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:38,573 INFO L523 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:38,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 13:35:38,773 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:38,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1257543238, now seen corresponding path program 35 times [2021-05-02 13:35:38,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:38,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429606067] [2021-05-02 13:35:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:39,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:39,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:39,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429606067] [2021-05-02 13:35:39,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429606067] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:39,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704016513] [2021-05-02 13:35:39,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:39,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-05-02 13:35:39,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:39,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 13:35:39,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:39,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:39,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704016513] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:39,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:39,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 39 [2021-05-02 13:35:39,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821680846] [2021-05-02 13:35:39,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 13:35:39,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:39,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 13:35:39,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 13:35:39,401 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 39 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:40,456 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-05-02 13:35:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 13:35:40,456 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-02 13:35:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:40,457 INFO L225 Difference]: With dead ends: 54 [2021-05-02 13:35:40,457 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 13:35:40,457 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1371.3ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 13:35:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 13:35:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-05-02 13:35:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-05-02 13:35:40,459 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2021-05-02 13:35:40,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:40,459 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-05-02 13:35:40,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:40,460 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-05-02 13:35:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-02 13:35:40,460 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:40,460 INFO L523 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:40,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:40,665 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:40,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:40,665 INFO L82 PathProgramCache]: Analyzing trace with hash 364523544, now seen corresponding path program 36 times [2021-05-02 13:35:40,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:40,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368062036] [2021-05-02 13:35:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:41,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:41,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:41,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368062036] [2021-05-02 13:35:41,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368062036] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:41,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049158557] [2021-05-02 13:35:41,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:41,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 13:35:41,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:41,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 13:35:41,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:41,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:41,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049158557] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:41,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:41,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 40 [2021-05-02 13:35:41,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306107118] [2021-05-02 13:35:41,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 13:35:41,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:41,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 13:35:41,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 13:35:41,363 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 40 states, 40 states have (on average 1.125) internal successors, (45), 39 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:42,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:42,474 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-05-02 13:35:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 13:35:42,474 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.125) internal successors, (45), 39 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-05-02 13:35:42,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:42,475 INFO L225 Difference]: With dead ends: 55 [2021-05-02 13:35:42,475 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 13:35:42,475 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1477.0ms TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 13:35:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 13:35:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-02 13:35:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-05-02 13:35:42,478 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2021-05-02 13:35:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:42,478 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-05-02 13:35:42,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.125) internal successors, (45), 39 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-05-02 13:35:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 13:35:42,479 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:42,479 INFO L523 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:42,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 13:35:42,685 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:42,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1549283194, now seen corresponding path program 37 times [2021-05-02 13:35:42,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:42,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332350608] [2021-05-02 13:35:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:43,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:43,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332350608] [2021-05-02 13:35:43,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332350608] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:43,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618725962] [2021-05-02 13:35:43,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:43,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 13:35:43,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:43,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:43,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618725962] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:43,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:43,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 41 [2021-05-02 13:35:43,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058228806] [2021-05-02 13:35:43,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 13:35:43,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:43,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 13:35:43,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 13:35:43,396 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 41 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:44,536 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-05-02 13:35:44,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 13:35:44,537 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-02 13:35:44,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:44,537 INFO L225 Difference]: With dead ends: 56 [2021-05-02 13:35:44,537 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 13:35:44,538 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1530.1ms TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 13:35:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 13:35:44,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-05-02 13:35:44,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-05-02 13:35:44,541 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2021-05-02 13:35:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:44,541 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-05-02 13:35:44,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-05-02 13:35:44,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 13:35:44,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:44,541 INFO L523 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:44,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 13:35:44,754 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:44,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:44,754 INFO L82 PathProgramCache]: Analyzing trace with hash -747749928, now seen corresponding path program 38 times [2021-05-02 13:35:44,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:44,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523251312] [2021-05-02 13:35:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:45,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:45,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:45,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523251312] [2021-05-02 13:35:45,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523251312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:45,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184597090] [2021-05-02 13:35:45,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:45,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:35:45,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:45,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 13:35:45,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:45,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:45,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184597090] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:45,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:45,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 42 [2021-05-02 13:35:45,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994688683] [2021-05-02 13:35:45,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 13:35:45,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:45,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 13:35:45,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 13:35:45,475 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 42 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:46,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:46,709 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-05-02 13:35:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 13:35:46,710 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-05-02 13:35:46,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:46,710 INFO L225 Difference]: With dead ends: 57 [2021-05-02 13:35:46,710 INFO L226 Difference]: Without dead ends: 52 [2021-05-02 13:35:46,711 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1629.5ms TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 13:35:46,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-02 13:35:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-02 13:35:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-05-02 13:35:46,714 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2021-05-02 13:35:46,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:46,714 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-05-02 13:35:46,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:46,714 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-05-02 13:35:46,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 13:35:46,714 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:46,714 INFO L523 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:46,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 13:35:46,925 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:46,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:46,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1670022458, now seen corresponding path program 39 times [2021-05-02 13:35:46,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:46,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013947551] [2021-05-02 13:35:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:47,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:47,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013947551] [2021-05-02 13:35:47,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013947551] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:47,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715246453] [2021-05-02 13:35:47,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:47,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-05-02 13:35:47,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:47,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 13:35:47,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:47,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:47,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715246453] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:47,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:47,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 43 [2021-05-02 13:35:47,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275108011] [2021-05-02 13:35:47,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 13:35:47,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:47,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 13:35:47,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 13:35:47,724 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 43 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:48,921 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-05-02 13:35:48,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 13:35:48,921 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-05-02 13:35:48,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:48,922 INFO L225 Difference]: With dead ends: 58 [2021-05-02 13:35:48,922 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 13:35:48,922 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1679.3ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 13:35:48,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 13:35:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-05-02 13:35:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-05-02 13:35:48,925 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2021-05-02 13:35:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:48,925 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-05-02 13:35:48,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-05-02 13:35:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-02 13:35:48,925 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:48,925 INFO L523 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:49,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 13:35:49,137 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:49,137 INFO L82 PathProgramCache]: Analyzing trace with hash -195699816, now seen corresponding path program 40 times [2021-05-02 13:35:49,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:49,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807023121] [2021-05-02 13:35:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:49,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:49,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:49,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807023121] [2021-05-02 13:35:49,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807023121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:49,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040999816] [2021-05-02 13:35:49,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:49,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:35:49,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:49,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 13:35:49,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:49,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:49,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040999816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:49,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:49,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 44 [2021-05-02 13:35:49,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836225710] [2021-05-02 13:35:49,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 13:35:49,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:49,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 13:35:49,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 13:35:49,945 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 44 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:51,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:51,251 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-05-02 13:35:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 13:35:51,252 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-05-02 13:35:51,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:51,252 INFO L225 Difference]: With dead ends: 59 [2021-05-02 13:35:51,252 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 13:35:51,253 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1769.2ms TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 13:35:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 13:35:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-05-02 13:35:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-05-02 13:35:51,255 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2021-05-02 13:35:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:51,256 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-05-02 13:35:51,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-05-02 13:35:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 13:35:51,256 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:51,256 INFO L523 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:51,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:51,456 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:51,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:51,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1736338170, now seen corresponding path program 41 times [2021-05-02 13:35:51,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:51,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906215863] [2021-05-02 13:35:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:52,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:52,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906215863] [2021-05-02 13:35:52,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906215863] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:52,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146136205] [2021-05-02 13:35:52,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:52,174 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-05-02 13:35:52,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:52,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 13:35:52,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:52,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:52,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146136205] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:52,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:52,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 45 [2021-05-02 13:35:52,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452162537] [2021-05-02 13:35:52,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 13:35:52,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:52,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 13:35:52,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 13:35:52,284 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 45 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:53,674 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-05-02 13:35:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 13:35:53,674 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-02 13:35:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:53,674 INFO L225 Difference]: With dead ends: 60 [2021-05-02 13:35:53,674 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 13:35:53,675 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1888.2ms TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 13:35:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 13:35:53,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-05-02 13:35:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2021-05-02 13:35:53,678 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2021-05-02 13:35:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:53,678 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2021-05-02 13:35:53,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2021-05-02 13:35:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 13:35:53,678 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:53,678 INFO L523 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:53,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-02 13:35:53,879 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:53,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2043480408, now seen corresponding path program 42 times [2021-05-02 13:35:53,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:53,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497212813] [2021-05-02 13:35:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:54,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:54,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:54,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497212813] [2021-05-02 13:35:54,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497212813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:54,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686761532] [2021-05-02 13:35:54,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:54,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-05-02 13:35:54,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:54,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 13:35:54,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:54,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:54,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686761532] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:54,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:54,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 46 [2021-05-02 13:35:54,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776566307] [2021-05-02 13:35:54,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 13:35:54,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:54,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 13:35:54,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 13:35:54,740 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 46 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:56,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:56,102 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-05-02 13:35:56,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 13:35:56,103 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-05-02 13:35:56,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:56,103 INFO L225 Difference]: With dead ends: 61 [2021-05-02 13:35:56,103 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 13:35:56,105 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1883.4ms TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 13:35:56,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 13:35:56,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 13:35:56,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-05-02 13:35:56,107 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2021-05-02 13:35:56,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:56,108 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-05-02 13:35:56,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-05-02 13:35:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 13:35:56,108 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:56,108 INFO L523 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:56,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:56,313 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:56,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1041227962, now seen corresponding path program 43 times [2021-05-02 13:35:56,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:56,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508693589] [2021-05-02 13:35:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:57,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:57,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508693589] [2021-05-02 13:35:57,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508693589] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:57,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192762676] [2021-05-02 13:35:57,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:57,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 13:35:57,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:57,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:57,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192762676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:57,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:57,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 47 [2021-05-02 13:35:57,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072969827] [2021-05-02 13:35:57,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 13:35:57,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:57,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 13:35:57,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 13:35:57,246 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 47 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:58,707 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-05-02 13:35:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 13:35:58,707 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-02 13:35:58,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:58,708 INFO L225 Difference]: With dead ends: 62 [2021-05-02 13:35:58,708 INFO L226 Difference]: Without dead ends: 57 [2021-05-02 13:35:58,708 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 2040.7ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 13:35:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-02 13:35:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-05-02 13:35:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-05-02 13:35:58,715 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2021-05-02 13:35:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:58,715 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-05-02 13:35:58,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:35:58,715 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-05-02 13:35:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-02 13:35:58,715 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:58,715 INFO L523 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:58,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:58,916 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:58,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:58,916 INFO L82 PathProgramCache]: Analyzing trace with hash 2117060376, now seen corresponding path program 44 times [2021-05-02 13:35:58,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:58,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599495004] [2021-05-02 13:35:58,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:59,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:59,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599495004] [2021-05-02 13:35:59,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599495004] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:59,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534911173] [2021-05-02 13:35:59,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:35:59,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:35:59,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:35:59,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 13:35:59,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:35:59,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:35:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:35:59,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534911173] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:35:59,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:35:59,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 48 [2021-05-02 13:35:59,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907325374] [2021-05-02 13:35:59,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 13:35:59,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:59,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 13:35:59,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 13:35:59,863 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 48 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:01,389 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-05-02 13:36:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 13:36:01,390 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-05-02 13:36:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:01,390 INFO L225 Difference]: With dead ends: 63 [2021-05-02 13:36:01,390 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 13:36:01,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 2093.6ms TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 13:36:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 13:36:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-02 13:36:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-05-02 13:36:01,394 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2021-05-02 13:36:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:01,394 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-05-02 13:36:01,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-05-02 13:36:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 13:36:01,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:01,394 INFO L523 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:01,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 13:36:01,609 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:01,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:01,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1239751046, now seen corresponding path program 45 times [2021-05-02 13:36:01,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:01,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764736175] [2021-05-02 13:36:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:02,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:02,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:02,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764736175] [2021-05-02 13:36:02,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764736175] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:02,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338009573] [2021-05-02 13:36:02,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:02,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-05-02 13:36:02,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:02,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 13:36:02,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:02,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:02,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338009573] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:02,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:02,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 49 [2021-05-02 13:36:02,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059330182] [2021-05-02 13:36:02,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 13:36:02,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:02,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 13:36:02,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 13:36:02,598 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:04,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:04,185 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-05-02 13:36:04,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 13:36:04,185 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-02 13:36:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:04,186 INFO L225 Difference]: With dead ends: 64 [2021-05-02 13:36:04,186 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 13:36:04,186 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 2167.9ms TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 13:36:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 13:36:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-05-02 13:36:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-05-02 13:36:04,189 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2021-05-02 13:36:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:04,189 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-05-02 13:36:04,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-05-02 13:36:04,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-02 13:36:04,190 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:04,190 INFO L523 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:04,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 13:36:04,406 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:04,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:04,407 INFO L82 PathProgramCache]: Analyzing trace with hash -187034408, now seen corresponding path program 46 times [2021-05-02 13:36:04,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:04,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660046964] [2021-05-02 13:36:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:05,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:05,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:05,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660046964] [2021-05-02 13:36:05,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660046964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:05,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885492134] [2021-05-02 13:36:05,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:05,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:36:05,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:05,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 13:36:05,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:05,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:05,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885492134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:05,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:05,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 50 [2021-05-02 13:36:05,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764491815] [2021-05-02 13:36:05,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 13:36:05,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:05,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 13:36:05,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 13:36:05,424 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 50 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:07,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:07,020 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-05-02 13:36:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 13:36:07,022 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-05-02 13:36:07,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:07,022 INFO L225 Difference]: With dead ends: 65 [2021-05-02 13:36:07,022 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 13:36:07,023 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 2248.7ms TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 13:36:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 13:36:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 13:36:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-05-02 13:36:07,026 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2021-05-02 13:36:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:07,026 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-05-02 13:36:07,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-05-02 13:36:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 13:36:07,027 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:07,027 INFO L523 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:07,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 13:36:07,240 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1467710522, now seen corresponding path program 47 times [2021-05-02 13:36:07,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:07,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179110868] [2021-05-02 13:36:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:08,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:08,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179110868] [2021-05-02 13:36:08,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179110868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:08,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803880716] [2021-05-02 13:36:08,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:08,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-05-02 13:36:08,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:08,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 13:36:08,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:08,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:08,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803880716] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:08,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:08,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 51 [2021-05-02 13:36:08,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898431597] [2021-05-02 13:36:08,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 13:36:08,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:08,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 13:36:08,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 13:36:08,330 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 51 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:09,964 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-05-02 13:36:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 13:36:09,964 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-05-02 13:36:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:09,965 INFO L225 Difference]: With dead ends: 66 [2021-05-02 13:36:09,965 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 13:36:09,965 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 2377.9ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 13:36:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 13:36:09,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-05-02 13:36:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 56 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2021-05-02 13:36:09,970 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2021-05-02 13:36:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:09,970 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2021-05-02 13:36:09,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2021-05-02 13:36:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-02 13:36:09,970 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:09,970 INFO L523 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:10,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:10,177 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:10,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1781002904, now seen corresponding path program 48 times [2021-05-02 13:36:10,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:10,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842315370] [2021-05-02 13:36:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:11,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:11,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:11,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842315370] [2021-05-02 13:36:11,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842315370] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:11,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472025241] [2021-05-02 13:36:11,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:11,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 13:36:11,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:11,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 13:36:11,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:11,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:11,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472025241] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:11,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:11,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 52 [2021-05-02 13:36:11,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875449323] [2021-05-02 13:36:11,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 13:36:11,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:11,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 13:36:11,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 13:36:11,248 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:13,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:13,009 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-05-02 13:36:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 13:36:13,009 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2021-05-02 13:36:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:13,010 INFO L225 Difference]: With dead ends: 67 [2021-05-02 13:36:13,010 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 13:36:13,010 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 2407.0ms TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 13:36:13,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 13:36:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-05-02 13:36:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-05-02 13:36:13,013 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2021-05-02 13:36:13,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:13,013 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-05-02 13:36:13,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-05-02 13:36:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 13:36:13,014 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:13,014 INFO L523 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:13,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 13:36:13,221 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:13,221 INFO L82 PathProgramCache]: Analyzing trace with hash -588095994, now seen corresponding path program 49 times [2021-05-02 13:36:13,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:13,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491201432] [2021-05-02 13:36:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:14,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:14,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:14,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491201432] [2021-05-02 13:36:14,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491201432] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:14,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271024908] [2021-05-02 13:36:14,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:14,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 13:36:14,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:14,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:14,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271024908] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:14,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:14,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 53 [2021-05-02 13:36:14,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446987975] [2021-05-02 13:36:14,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 13:36:14,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:14,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 13:36:14,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 13:36:14,450 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 53 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:16,236 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-05-02 13:36:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 13:36:16,236 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-02 13:36:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:16,237 INFO L225 Difference]: With dead ends: 68 [2021-05-02 13:36:16,237 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 13:36:16,237 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 2598.6ms TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 13:36:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 13:36:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-05-02 13:36:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2021-05-02 13:36:16,240 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2021-05-02 13:36:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:16,240 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2021-05-02 13:36:16,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2021-05-02 13:36:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-05-02 13:36:16,241 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:16,241 INFO L523 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:16,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 13:36:16,456 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:16,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:16,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1015717800, now seen corresponding path program 50 times [2021-05-02 13:36:16,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:16,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708370236] [2021-05-02 13:36:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:17,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:17,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:17,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708370236] [2021-05-02 13:36:17,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708370236] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:17,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782213416] [2021-05-02 13:36:17,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:17,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:36:17,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:17,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 13:36:17,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:17,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:17,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782213416] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:17,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:17,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 54 [2021-05-02 13:36:17,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619805451] [2021-05-02 13:36:17,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 13:36:17,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:17,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 13:36:17,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 13:36:17,638 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 54 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:19,509 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-05-02 13:36:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 13:36:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-05-02 13:36:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:19,510 INFO L225 Difference]: With dead ends: 69 [2021-05-02 13:36:19,510 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 13:36:19,510 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 2634.5ms TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 13:36:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 13:36:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 13:36:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-05-02 13:36:19,514 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2021-05-02 13:36:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:19,514 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-05-02 13:36:19,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-05-02 13:36:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 13:36:19,514 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:19,514 INFO L523 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:19,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:19,715 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:19,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1387091898, now seen corresponding path program 51 times [2021-05-02 13:36:19,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:19,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554656213] [2021-05-02 13:36:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:20,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:20,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554656213] [2021-05-02 13:36:20,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554656213] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:20,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013010614] [2021-05-02 13:36:20,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:20,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-05-02 13:36:20,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:20,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 13:36:20,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:20,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:20,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013010614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:20,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:20,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 55 [2021-05-02 13:36:20,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755502567] [2021-05-02 13:36:20,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 13:36:20,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:20,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 13:36:20,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 13:36:20,947 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 55 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:22,784 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-05-02 13:36:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 13:36:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-02 13:36:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:22,785 INFO L225 Difference]: With dead ends: 70 [2021-05-02 13:36:22,785 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 13:36:22,786 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 2674.5ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 13:36:22,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 13:36:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-02 13:36:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2021-05-02 13:36:22,789 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2021-05-02 13:36:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:22,789 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2021-05-02 13:36:22,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2021-05-02 13:36:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 13:36:22,789 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:22,789 INFO L523 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:23,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-05-02 13:36:23,001 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash -14787048, now seen corresponding path program 52 times [2021-05-02 13:36:23,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:23,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952388598] [2021-05-02 13:36:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:24,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:24,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:24,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952388598] [2021-05-02 13:36:24,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952388598] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:24,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157834782] [2021-05-02 13:36:24,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:24,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:36:24,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:24,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 13:36:24,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:24,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:24,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157834782] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:24,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:24,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 56 [2021-05-02 13:36:24,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887797923] [2021-05-02 13:36:24,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 13:36:24,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:24,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 13:36:24,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 13:36:24,233 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 56 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:26,213 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-05-02 13:36:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 13:36:26,214 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-05-02 13:36:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:26,214 INFO L225 Difference]: With dead ends: 71 [2021-05-02 13:36:26,214 INFO L226 Difference]: Without dead ends: 66 [2021-05-02 13:36:26,215 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 2776.1ms TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 13:36:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-02 13:36:26,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-02 13:36:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2021-05-02 13:36:26,217 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2021-05-02 13:36:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:26,217 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2021-05-02 13:36:26,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2021-05-02 13:36:26,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 13:36:26,218 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:26,218 INFO L523 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:26,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:26,419 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:26,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:26,419 INFO L82 PathProgramCache]: Analyzing trace with hash -423009658, now seen corresponding path program 53 times [2021-05-02 13:36:26,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:26,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620792496] [2021-05-02 13:36:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:27,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:27,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:27,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620792496] [2021-05-02 13:36:27,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620792496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:27,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72453821] [2021-05-02 13:36:27,484 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:27,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-05-02 13:36:27,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:27,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 13:36:27,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:27,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:27,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72453821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:27,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:27,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 57 [2021-05-02 13:36:27,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111585667] [2021-05-02 13:36:27,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 13:36:27,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:27,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 13:36:27,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 13:36:27,679 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:29,702 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-05-02 13:36:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 13:36:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-02 13:36:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:29,703 INFO L225 Difference]: With dead ends: 72 [2021-05-02 13:36:29,703 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 13:36:29,704 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2857.4ms TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 13:36:29,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 13:36:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-05-02 13:36:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-05-02 13:36:29,707 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2021-05-02 13:36:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:29,707 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-05-02 13:36:29,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:29,707 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-05-02 13:36:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-02 13:36:29,707 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:29,708 INFO L523 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:29,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-02 13:36:29,921 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:29,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:29,921 INFO L82 PathProgramCache]: Analyzing trace with hash -193008680, now seen corresponding path program 54 times [2021-05-02 13:36:29,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:29,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140876591] [2021-05-02 13:36:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:31,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:31,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140876591] [2021-05-02 13:36:31,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140876591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:31,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905207896] [2021-05-02 13:36:31,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:31,091 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-05-02 13:36:31,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:31,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 13:36:31,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:31,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:31,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905207896] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:31,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:31,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 58 [2021-05-02 13:36:31,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548657902] [2021-05-02 13:36:31,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 13:36:31,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:31,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 13:36:31,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 13:36:31,239 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 58 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:33,332 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-05-02 13:36:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 13:36:33,332 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-05-02 13:36:33,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:33,333 INFO L225 Difference]: With dead ends: 73 [2021-05-02 13:36:33,333 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 13:36:33,334 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2961.8ms TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 13:36:33,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 13:36:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-05-02 13:36:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-05-02 13:36:33,337 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2021-05-02 13:36:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:33,337 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-05-02 13:36:33,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-05-02 13:36:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 13:36:33,337 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:33,337 INFO L523 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:33,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 13:36:33,547 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:33,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:33,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1652912954, now seen corresponding path program 55 times [2021-05-02 13:36:33,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:33,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482053901] [2021-05-02 13:36:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:34,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:34,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482053901] [2021-05-02 13:36:34,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482053901] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:34,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715014409] [2021-05-02 13:36:34,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:34,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 13:36:34,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:34,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:34,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715014409] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:34,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:34,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 59 [2021-05-02 13:36:34,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464228954] [2021-05-02 13:36:34,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 13:36:34,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:34,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 13:36:34,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 13:36:34,937 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 59 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:37,129 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-05-02 13:36:37,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 13:36:37,129 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-05-02 13:36:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:37,130 INFO L225 Difference]: With dead ends: 74 [2021-05-02 13:36:37,130 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 13:36:37,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 3140.2ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 13:36:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 13:36:37,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-05-02 13:36:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.015625) internal successors, (65), 64 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2021-05-02 13:36:37,133 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2021-05-02 13:36:37,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:37,134 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2021-05-02 13:36:37,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2021-05-02 13:36:37,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 13:36:37,134 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:37,134 INFO L523 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:37,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:37,335 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:37,335 INFO L82 PathProgramCache]: Analyzing trace with hash 334694808, now seen corresponding path program 56 times [2021-05-02 13:36:37,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:37,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668360833] [2021-05-02 13:36:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:38,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:38,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668360833] [2021-05-02 13:36:38,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668360833] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:38,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322140379] [2021-05-02 13:36:38,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:38,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:36:38,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:38,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 13:36:38,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:38,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:38,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322140379] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:38,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:38,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 60 [2021-05-02 13:36:38,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700693133] [2021-05-02 13:36:38,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 13:36:38,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:38,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 13:36:38,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 13:36:38,764 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 60 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:40,997 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-05-02 13:36:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 13:36:40,997 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-05-02 13:36:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:40,998 INFO L225 Difference]: With dead ends: 75 [2021-05-02 13:36:40,998 INFO L226 Difference]: Without dead ends: 70 [2021-05-02 13:36:40,999 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 3211.4ms TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2021-05-02 13:36:40,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-02 13:36:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-05-02 13:36:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-05-02 13:36:41,002 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2021-05-02 13:36:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:41,002 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-05-02 13:36:41,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-05-02 13:36:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 13:36:41,002 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:41,002 INFO L523 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:41,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 13:36:41,209 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:41,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1820993286, now seen corresponding path program 57 times [2021-05-02 13:36:41,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:41,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473954820] [2021-05-02 13:36:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:42,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:42,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:42,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473954820] [2021-05-02 13:36:42,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473954820] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:42,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968596356] [2021-05-02 13:36:42,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:42,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 13:36:42,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:42,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 13:36:42,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:42,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:42,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968596356] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:42,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:42,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 61 [2021-05-02 13:36:42,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45638221] [2021-05-02 13:36:42,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 13:36:42,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:42,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 13:36:42,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 13:36:42,694 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 61 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:45,013 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2021-05-02 13:36:45,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 13:36:45,013 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-02 13:36:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:45,014 INFO L225 Difference]: With dead ends: 76 [2021-05-02 13:36:45,014 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 13:36:45,014 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 3286.3ms TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 13:36:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 13:36:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-05-02 13:36:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-05-02 13:36:45,018 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2021-05-02 13:36:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:45,018 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-05-02 13:36:45,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-05-02 13:36:45,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-02 13:36:45,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:45,018 INFO L523 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:45,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:45,219 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash 651605848, now seen corresponding path program 58 times [2021-05-02 13:36:45,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:45,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731991629] [2021-05-02 13:36:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:46,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:46,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731991629] [2021-05-02 13:36:46,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731991629] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:46,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434012056] [2021-05-02 13:36:46,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:46,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:36:46,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:46,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 13:36:46,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:46,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:46,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434012056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:46,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:46,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 62 [2021-05-02 13:36:46,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932315120] [2021-05-02 13:36:46,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 13:36:46,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:46,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 13:36:46,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 13:36:46,707 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 62 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:49,068 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2021-05-02 13:36:49,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 13:36:49,068 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2021-05-02 13:36:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:49,069 INFO L225 Difference]: With dead ends: 77 [2021-05-02 13:36:49,069 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 13:36:49,069 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 3386.0ms TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2021-05-02 13:36:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 13:36:49,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-02 13:36:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-05-02 13:36:49,073 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2021-05-02 13:36:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:49,073 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-05-02 13:36:49,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-05-02 13:36:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 13:36:49,073 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:49,073 INFO L523 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:49,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 13:36:49,295 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:49,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:49,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1239666362, now seen corresponding path program 59 times [2021-05-02 13:36:49,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:49,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186213856] [2021-05-02 13:36:49,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:50,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:50,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186213856] [2021-05-02 13:36:50,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186213856] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:50,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122013484] [2021-05-02 13:36:50,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:50,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-05-02 13:36:50,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:50,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 13:36:50,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:50,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:50,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122013484] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:50,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:50,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 63 [2021-05-02 13:36:50,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173319365] [2021-05-02 13:36:50,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 13:36:50,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:50,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 13:36:50,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 13:36:50,929 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 63 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:53,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:53,271 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2021-05-02 13:36:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 13:36:53,272 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-02 13:36:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:53,273 INFO L225 Difference]: With dead ends: 78 [2021-05-02 13:36:53,273 INFO L226 Difference]: Without dead ends: 73 [2021-05-02 13:36:53,273 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 3557.3ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 13:36:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-02 13:36:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-05-02 13:36:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-05-02 13:36:53,277 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2021-05-02 13:36:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:53,277 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-05-02 13:36:53,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-05-02 13:36:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-02 13:36:53,277 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:53,277 INFO L523 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:53,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 13:36:53,491 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:53,491 INFO L82 PathProgramCache]: Analyzing trace with hash 260437272, now seen corresponding path program 60 times [2021-05-02 13:36:53,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:53,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887489315] [2021-05-02 13:36:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:54,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:54,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:54,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887489315] [2021-05-02 13:36:54,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887489315] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:54,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024456078] [2021-05-02 13:36:54,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:54,952 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 13:36:54,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:36:54,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 13:36:54,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:54,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:54,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:55,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024456078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:55,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:55,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 64 [2021-05-02 13:36:55,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353713276] [2021-05-02 13:36:55,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 13:36:55,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:55,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 13:36:55,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 13:36:55,119 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 64 states, 64 states have (on average 1.078125) internal successors, (69), 63 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:36:57,593 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-05-02 13:36:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 13:36:57,594 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 63 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-05-02 13:36:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:36:57,594 INFO L225 Difference]: With dead ends: 79 [2021-05-02 13:36:57,594 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 13:36:57,595 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 3610.3ms TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2021-05-02 13:36:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 13:36:57,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 13:36:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-05-02 13:36:57,598 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2021-05-02 13:36:57,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:36:57,598 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-05-02 13:36:57,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 63 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:36:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-05-02 13:36:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 13:36:57,599 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:36:57,599 INFO L523 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:36:57,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:57,813 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:36:57,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:36:57,813 INFO L82 PathProgramCache]: Analyzing trace with hash -480990330, now seen corresponding path program 61 times [2021-05-02 13:36:57,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:36:57,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549672935] [2021-05-02 13:36:57,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:36:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:59,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:36:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:59,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:36:59,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549672935] [2021-05-02 13:36:59,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549672935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:59,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147237991] [2021-05-02 13:36:59,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:36:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:36:59,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 13:36:59,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:36:59,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:36:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:36:59,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147237991] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:36:59,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:36:59,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 65 [2021-05-02 13:36:59,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52684494] [2021-05-02 13:36:59,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 13:36:59,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:36:59,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 13:36:59,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 13:36:59,444 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:02,017 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-05-02 13:37:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 13:37:02,017 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-02 13:37:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:02,018 INFO L225 Difference]: With dead ends: 80 [2021-05-02 13:37:02,018 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 13:37:02,019 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 3726.9ms TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 13:37:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 13:37:02,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-05-02 13:37:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2021-05-02 13:37:02,022 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2021-05-02 13:37:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:02,022 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2021-05-02 13:37:02,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:02,022 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2021-05-02 13:37:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-02 13:37:02,023 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:02,023 INFO L523 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:02,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:02,234 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:02,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:02,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1990409512, now seen corresponding path program 62 times [2021-05-02 13:37:02,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:02,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316854567] [2021-05-02 13:37:02,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:03,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:03,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316854567] [2021-05-02 13:37:03,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316854567] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:03,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234496612] [2021-05-02 13:37:03,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:03,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:37:03,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:03,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 13:37:03,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:03,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:03,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234496612] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:03,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:03,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 66 [2021-05-02 13:37:03,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249331856] [2021-05-02 13:37:03,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 13:37:03,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:03,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 13:37:03,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 13:37:03,922 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 66 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:06,580 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-05-02 13:37:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 13:37:06,580 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2021-05-02 13:37:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:06,583 INFO L225 Difference]: With dead ends: 81 [2021-05-02 13:37:06,583 INFO L226 Difference]: Without dead ends: 76 [2021-05-02 13:37:06,583 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 3868.5ms TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2021-05-02 13:37:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-02 13:37:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-05-02 13:37:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2021-05-02 13:37:06,587 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2021-05-02 13:37:06,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:06,587 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2021-05-02 13:37:06,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2021-05-02 13:37:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 13:37:06,587 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:06,587 INFO L523 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:06,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:06,790 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:06,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:06,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1537763898, now seen corresponding path program 63 times [2021-05-02 13:37:06,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:06,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018599648] [2021-05-02 13:37:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:08,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:08,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:08,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018599648] [2021-05-02 13:37:08,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018599648] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:08,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447786994] [2021-05-02 13:37:08,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:08,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-05-02 13:37:08,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:08,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-02 13:37:08,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:08,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:08,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447786994] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:08,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:08,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 67 [2021-05-02 13:37:08,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124394997] [2021-05-02 13:37:08,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 13:37:08,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:08,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 13:37:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 13:37:08,559 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 67 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:11,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:11,321 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2021-05-02 13:37:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 13:37:11,321 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-05-02 13:37:11,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:11,322 INFO L225 Difference]: With dead ends: 82 [2021-05-02 13:37:11,322 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 13:37:11,323 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 3998.5ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 13:37:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 13:37:11,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-05-02 13:37:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 72 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2021-05-02 13:37:11,326 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2021-05-02 13:37:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:11,326 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2021-05-02 13:37:11,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2021-05-02 13:37:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-02 13:37:11,327 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:11,327 INFO L523 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:11,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:11,537 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:11,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:11,537 INFO L82 PathProgramCache]: Analyzing trace with hash -390651752, now seen corresponding path program 64 times [2021-05-02 13:37:11,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:11,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580626097] [2021-05-02 13:37:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:13,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:13,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580626097] [2021-05-02 13:37:13,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580626097] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:13,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689911341] [2021-05-02 13:37:13,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:13,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:37:13,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:13,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 13:37:13,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:13,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:13,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689911341] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:13,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:13,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 68 [2021-05-02 13:37:13,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908740849] [2021-05-02 13:37:13,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 13:37:13,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:13,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 13:37:13,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 13:37:13,333 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 68 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:16,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:16,139 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-05-02 13:37:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 13:37:16,140 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2021-05-02 13:37:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:16,140 INFO L225 Difference]: With dead ends: 83 [2021-05-02 13:37:16,140 INFO L226 Difference]: Without dead ends: 78 [2021-05-02 13:37:16,141 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 4090.1ms TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2021-05-02 13:37:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-02 13:37:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-05-02 13:37:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-05-02 13:37:16,144 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2021-05-02 13:37:16,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:16,144 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-05-02 13:37:16,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-05-02 13:37:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 13:37:16,145 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:16,145 INFO L523 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:16,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:16,361 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:16,361 INFO L82 PathProgramCache]: Analyzing trace with hash 810086406, now seen corresponding path program 65 times [2021-05-02 13:37:16,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:16,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068709169] [2021-05-02 13:37:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:17,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:17,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068709169] [2021-05-02 13:37:17,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068709169] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:17,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096524163] [2021-05-02 13:37:17,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:18,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-02 13:37:18,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:18,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 13:37:18,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:18,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:18,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096524163] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:18,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:18,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 69 [2021-05-02 13:37:18,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050025244] [2021-05-02 13:37:18,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 13:37:18,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:18,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 13:37:18,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 13:37:18,225 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 69 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:21,062 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-05-02 13:37:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 13:37:21,063 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-02 13:37:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:21,063 INFO L225 Difference]: With dead ends: 84 [2021-05-02 13:37:21,063 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 13:37:21,064 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 4201.7ms TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 13:37:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 13:37:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-05-02 13:37:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 74 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2021-05-02 13:37:21,067 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2021-05-02 13:37:21,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:21,067 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2021-05-02 13:37:21,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2021-05-02 13:37:21,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 13:37:21,068 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:21,068 INFO L523 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:21,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 13:37:21,284 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:21,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:21,284 INFO L82 PathProgramCache]: Analyzing trace with hash -621736360, now seen corresponding path program 66 times [2021-05-02 13:37:21,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:21,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154436510] [2021-05-02 13:37:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:22,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:22,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:22,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154436510] [2021-05-02 13:37:22,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154436510] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:22,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34635268] [2021-05-02 13:37:22,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:23,034 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-05-02 13:37:23,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:23,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 13:37:23,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:23,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:23,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34635268] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:23,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:23,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 70 [2021-05-02 13:37:23,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212484840] [2021-05-02 13:37:23,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 13:37:23,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:23,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 13:37:23,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 13:37:23,205 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 70 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:26,136 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2021-05-02 13:37:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 13:37:26,136 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2021-05-02 13:37:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:26,137 INFO L225 Difference]: With dead ends: 85 [2021-05-02 13:37:26,137 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 13:37:26,137 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 4394.3ms TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2021-05-02 13:37:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 13:37:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-02 13:37:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-05-02 13:37:26,141 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2021-05-02 13:37:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:26,141 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-05-02 13:37:26,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:26,141 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-05-02 13:37:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 13:37:26,142 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:26,142 INFO L523 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:26,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-05-02 13:37:26,358 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:26,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:26,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2058569146, now seen corresponding path program 67 times [2021-05-02 13:37:26,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:26,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080917259] [2021-05-02 13:37:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:28,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:28,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:28,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080917259] [2021-05-02 13:37:28,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080917259] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:28,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565462869] [2021-05-02 13:37:28,096 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:28,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 13:37:28,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:28,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:28,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565462869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:28,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:28,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 71 [2021-05-02 13:37:28,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046137692] [2021-05-02 13:37:28,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 13:37:28,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:28,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 13:37:28,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 13:37:28,341 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:31,272 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-05-02 13:37:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 13:37:31,272 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-02 13:37:31,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:31,273 INFO L225 Difference]: With dead ends: 86 [2021-05-02 13:37:31,273 INFO L226 Difference]: Without dead ends: 81 [2021-05-02 13:37:31,274 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 4493.3ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 13:37:31,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-02 13:37:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-05-02 13:37:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2021-05-02 13:37:31,277 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2021-05-02 13:37:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:31,277 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2021-05-02 13:37:31,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:31,278 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2021-05-02 13:37:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-02 13:37:31,278 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:31,278 INFO L523 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:31,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:31,493 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash 644254744, now seen corresponding path program 68 times [2021-05-02 13:37:31,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:31,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263895078] [2021-05-02 13:37:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:33,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:33,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:33,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263895078] [2021-05-02 13:37:33,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263895078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:33,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60103939] [2021-05-02 13:37:33,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:33,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:37:33,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:33,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 13:37:33,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:33,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:33,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60103939] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:33,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:33,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 72 [2021-05-02 13:37:33,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149418593] [2021-05-02 13:37:33,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 13:37:33,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:33,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 13:37:33,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 13:37:33,496 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 72 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:36,635 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-05-02 13:37:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 13:37:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2021-05-02 13:37:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:36,636 INFO L225 Difference]: With dead ends: 87 [2021-05-02 13:37:36,636 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 13:37:36,637 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 4595.0ms TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2021-05-02 13:37:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 13:37:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-02 13:37:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-05-02 13:37:36,646 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2021-05-02 13:37:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:36,646 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-05-02 13:37:36,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-05-02 13:37:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 13:37:36,647 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:36,647 INFO L523 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:36,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 13:37:36,861 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:36,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:36,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1467550586, now seen corresponding path program 69 times [2021-05-02 13:37:36,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:36,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34700457] [2021-05-02 13:37:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:38,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:38,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:38,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34700457] [2021-05-02 13:37:38,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34700457] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:38,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517774445] [2021-05-02 13:37:38,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:38,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-05-02 13:37:38,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:38,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 13:37:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:38,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:38,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517774445] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:38,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:38,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 73 [2021-05-02 13:37:38,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103910445] [2021-05-02 13:37:38,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 13:37:38,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:38,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 13:37:38,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 13:37:38,955 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 73 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:42,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:42,034 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-05-02 13:37:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 13:37:42,034 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-02 13:37:42,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:42,035 INFO L225 Difference]: With dead ends: 88 [2021-05-02 13:37:42,035 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 13:37:42,036 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 4721.7ms TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 13:37:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 13:37:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-02 13:37:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2021-05-02 13:37:42,039 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2021-05-02 13:37:42,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:42,039 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2021-05-02 13:37:42,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:42,039 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2021-05-02 13:37:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-02 13:37:42,040 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:42,040 INFO L523 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:42,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 13:37:42,253 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:42,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1785960920, now seen corresponding path program 70 times [2021-05-02 13:37:42,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:42,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675516122] [2021-05-02 13:37:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:44,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:44,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:44,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675516122] [2021-05-02 13:37:44,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675516122] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:44,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630447754] [2021-05-02 13:37:44,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:44,176 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:37:44,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:44,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 13:37:44,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:44,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:44,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630447754] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:44,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:44,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 74 [2021-05-02 13:37:44,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068743921] [2021-05-02 13:37:44,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 13:37:44,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:44,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 13:37:44,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 13:37:44,371 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 74 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:47,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:47,566 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2021-05-02 13:37:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 13:37:47,567 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2021-05-02 13:37:47,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:47,567 INFO L225 Difference]: With dead ends: 89 [2021-05-02 13:37:47,567 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 13:37:47,568 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 4846.6ms TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2021-05-02 13:37:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 13:37:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-05-02 13:37:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2021-05-02 13:37:47,571 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2021-05-02 13:37:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:47,572 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2021-05-02 13:37:47,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2021-05-02 13:37:47,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 13:37:47,572 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:47,572 INFO L523 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:47,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-05-02 13:37:47,773 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:47,773 INFO L82 PathProgramCache]: Analyzing trace with hash -434397498, now seen corresponding path program 71 times [2021-05-02 13:37:47,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:47,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042444849] [2021-05-02 13:37:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:49,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:49,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:49,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042444849] [2021-05-02 13:37:49,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042444849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:49,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51886135] [2021-05-02 13:37:49,704 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:49,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-05-02 13:37:49,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:49,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 13:37:49,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:49,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:49,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51886135] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:49,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:49,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 75 [2021-05-02 13:37:49,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701227382] [2021-05-02 13:37:49,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 13:37:49,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:49,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 13:37:49,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 13:37:49,963 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 75 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:53,287 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2021-05-02 13:37:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 13:37:53,288 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-05-02 13:37:53,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:53,288 INFO L225 Difference]: With dead ends: 90 [2021-05-02 13:37:53,288 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 13:37:53,289 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 4996.1ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 13:37:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 13:37:53,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-05-02 13:37:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2021-05-02 13:37:53,293 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2021-05-02 13:37:53,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:53,293 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2021-05-02 13:37:53,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2021-05-02 13:37:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-05-02 13:37:53,293 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:53,293 INFO L523 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:53,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:53,509 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:53,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:53,509 INFO L82 PathProgramCache]: Analyzing trace with hash -546031720, now seen corresponding path program 72 times [2021-05-02 13:37:53,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:53,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39946922] [2021-05-02 13:37:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:55,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:37:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:37:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:55,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:37:55,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39946922] [2021-05-02 13:37:55,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39946922] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:55,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596333151] [2021-05-02 13:37:55,481 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:55,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 13:37:55,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:37:55,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 13:37:55,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:37:55,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:37:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:37:55,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596333151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:37:55,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:37:55,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 76 [2021-05-02 13:37:55,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728768112] [2021-05-02 13:37:55,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 13:37:55,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:37:55,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 13:37:55,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 13:37:55,778 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 76 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:37:59,218 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-05-02 13:37:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 13:37:59,219 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2021-05-02 13:37:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:37:59,219 INFO L225 Difference]: With dead ends: 91 [2021-05-02 13:37:59,219 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 13:37:59,220 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 5093.0ms TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2021-05-02 13:37:59,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 13:37:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-05-02 13:37:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-05-02 13:37:59,224 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2021-05-02 13:37:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:37:59,224 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-05-02 13:37:59,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:37:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-05-02 13:37:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 13:37:59,224 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:37:59,224 INFO L523 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:37:59,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:37:59,425 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:37:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:37:59,425 INFO L82 PathProgramCache]: Analyzing trace with hash 288274694, now seen corresponding path program 73 times [2021-05-02 13:37:59,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:37:59,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990510296] [2021-05-02 13:37:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:37:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:01,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:38:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:01,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:38:01,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990510296] [2021-05-02 13:38:01,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990510296] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:01,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675734644] [2021-05-02 13:38:01,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:01,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 13:38:01,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:38:01,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:01,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675734644] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:01,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:38:01,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 77 [2021-05-02 13:38:01,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720851150] [2021-05-02 13:38:01,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 13:38:01,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:38:01,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 13:38:01,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 13:38:01,745 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 77 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:38:05,140 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-05-02 13:38:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 13:38:05,141 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-02 13:38:05,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:38:05,141 INFO L225 Difference]: With dead ends: 92 [2021-05-02 13:38:05,141 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 13:38:05,142 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 5243.1ms TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2021-05-02 13:38:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 13:38:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-05-02 13:38:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2021-05-02 13:38:05,146 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2021-05-02 13:38:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:38:05,146 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2021-05-02 13:38:05,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2021-05-02 13:38:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-02 13:38:05,146 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:38:05,146 INFO L523 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:38:05,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:05,359 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:38:05,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:38:05,359 INFO L82 PathProgramCache]: Analyzing trace with hash 381969752, now seen corresponding path program 74 times [2021-05-02 13:38:05,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:38:05,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209336731] [2021-05-02 13:38:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:38:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:07,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:38:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:07,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:38:07,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209336731] [2021-05-02 13:38:07,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209336731] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:07,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674029775] [2021-05-02 13:38:07,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:07,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:38:07,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:38:07,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 13:38:07,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:38:07,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:07,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674029775] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:07,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:38:07,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 78 [2021-05-02 13:38:07,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987467872] [2021-05-02 13:38:07,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 13:38:07,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:38:07,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 13:38:07,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 13:38:07,743 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 78 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:11,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:38:11,364 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-05-02 13:38:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 13:38:11,364 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2021-05-02 13:38:11,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:38:11,365 INFO L225 Difference]: With dead ends: 93 [2021-05-02 13:38:11,365 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 13:38:11,366 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 5442.6ms TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2021-05-02 13:38:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 13:38:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-02 13:38:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2021-05-02 13:38:11,370 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2021-05-02 13:38:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:38:11,370 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2021-05-02 13:38:11,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2021-05-02 13:38:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 13:38:11,370 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:38:11,370 INFO L523 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:38:11,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-05-02 13:38:11,571 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:38:11,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:38:11,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1008450746, now seen corresponding path program 75 times [2021-05-02 13:38:11,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:38:11,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118616065] [2021-05-02 13:38:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:38:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:13,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:38:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:13,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:38:13,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118616065] [2021-05-02 13:38:13,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118616065] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:13,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431300109] [2021-05-02 13:38:13,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:13,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-05-02 13:38:13,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:38:13,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-02 13:38:13,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:38:13,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:13,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:14,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431300109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:14,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:38:14,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 79 [2021-05-02 13:38:14,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095349324] [2021-05-02 13:38:14,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 13:38:14,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:38:14,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 13:38:14,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 13:38:14,098 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 79 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:38:17,989 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2021-05-02 13:38:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 13:38:17,990 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-02 13:38:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:38:17,990 INFO L225 Difference]: With dead ends: 94 [2021-05-02 13:38:17,990 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 13:38:17,991 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 5755.6ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-02 13:38:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 13:38:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-05-02 13:38:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0119047619047619) internal successors, (85), 84 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2021-05-02 13:38:17,995 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2021-05-02 13:38:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:38:17,995 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2021-05-02 13:38:17,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:17,995 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2021-05-02 13:38:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-05-02 13:38:17,995 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:38:17,995 INFO L523 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:38:18,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:18,196 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:38:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:38:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1161813224, now seen corresponding path program 76 times [2021-05-02 13:38:18,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:38:18,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649044733] [2021-05-02 13:38:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:38:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:20,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:38:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:20,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:38:20,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649044733] [2021-05-02 13:38:20,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649044733] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:20,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212322970] [2021-05-02 13:38:20,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:20,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:38:20,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:38:20,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 13:38:20,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:38:20,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:20,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212322970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:20,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:38:20,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 80 [2021-05-02 13:38:20,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551874785] [2021-05-02 13:38:20,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 13:38:20,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:38:20,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 13:38:20,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 13:38:20,787 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 80 states, 80 states have (on average 1.0625) internal successors, (85), 79 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:38:24,771 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2021-05-02 13:38:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 13:38:24,772 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.0625) internal successors, (85), 79 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2021-05-02 13:38:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:38:24,772 INFO L225 Difference]: With dead ends: 95 [2021-05-02 13:38:24,772 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 13:38:24,773 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 5952.0ms TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2021-05-02 13:38:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 13:38:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-02 13:38:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2021-05-02 13:38:24,777 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2021-05-02 13:38:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:38:24,777 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2021-05-02 13:38:24,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.0625) internal successors, (85), 79 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2021-05-02 13:38:24,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 13:38:24,778 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:38:24,778 INFO L523 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:38:24,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:24,986 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:38:24,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:38:24,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1621082746, now seen corresponding path program 77 times [2021-05-02 13:38:24,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:38:24,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913573563] [2021-05-02 13:38:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:38:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:27,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:38:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:27,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:38:27,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913573563] [2021-05-02 13:38:27,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913573563] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:27,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267295169] [2021-05-02 13:38:27,329 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:27,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-05-02 13:38:27,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:38:27,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 13:38:27,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:38:27,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:27,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267295169] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:27,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:38:27,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 81 [2021-05-02 13:38:27,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001536119] [2021-05-02 13:38:27,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 13:38:27,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:38:27,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 13:38:27,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 13:38:27,625 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand has 81 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:38:31,450 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-05-02 13:38:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 13:38:31,450 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-05-02 13:38:31,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:38:31,451 INFO L225 Difference]: With dead ends: 96 [2021-05-02 13:38:31,451 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 13:38:31,452 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 5924.7ms TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2021-05-02 13:38:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 13:38:31,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-05-02 13:38:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0116279069767442) internal successors, (87), 86 states have internal predecessors, (87), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2021-05-02 13:38:31,455 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2021-05-02 13:38:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:38:31,455 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2021-05-02 13:38:31,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2021-05-02 13:38:31,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-05-02 13:38:31,456 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:38:31,456 INFO L523 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:38:31,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-02 13:38:31,656 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:38:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:38:31,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1321431256, now seen corresponding path program 78 times [2021-05-02 13:38:31,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:38:31,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591436754] [2021-05-02 13:38:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:38:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:38:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:34,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:38:34,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591436754] [2021-05-02 13:38:34,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591436754] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:34,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031272831] [2021-05-02 13:38:34,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:34,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-05-02 13:38:34,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:38:34,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 13:38:34,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:38:34,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:34,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031272831] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:34,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:38:34,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 82 [2021-05-02 13:38:34,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974741840] [2021-05-02 13:38:34,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 13:38:34,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:38:34,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 13:38:34,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 13:38:34,346 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 82 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:38:38,374 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-05-02 13:38:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 13:38:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2021-05-02 13:38:38,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:38:38,375 INFO L225 Difference]: With dead ends: 97 [2021-05-02 13:38:38,375 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 13:38:38,376 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 6036.6ms TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2021-05-02 13:38:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 13:38:38,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-02 13:38:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-05-02 13:38:38,379 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2021-05-02 13:38:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:38:38,380 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-05-02 13:38:38,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-05-02 13:38:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 13:38:38,380 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:38:38,380 INFO L523 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:38:38,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-05-02 13:38:38,580 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:38:38,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:38:38,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1949915194, now seen corresponding path program 79 times [2021-05-02 13:38:38,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:38:38,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149577453] [2021-05-02 13:38:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:38:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:38:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:41,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:38:41,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149577453] [2021-05-02 13:38:41,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149577453] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:41,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367531623] [2021-05-02 13:38:41,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:41,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 13:38:41,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:38:41,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:41,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367531623] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:41,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:38:41,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 83 [2021-05-02 13:38:41,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284235559] [2021-05-02 13:38:41,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 13:38:41,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:38:41,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 13:38:41,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 13:38:41,312 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 83 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:45,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:38:45,527 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-05-02 13:38:45,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 13:38:45,527 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-05-02 13:38:45,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:38:45,528 INFO L225 Difference]: With dead ends: 98 [2021-05-02 13:38:45,528 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 13:38:45,529 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 6302.5ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-02 13:38:45,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 13:38:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-05-02 13:38:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0113636363636365) internal successors, (89), 88 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2021-05-02 13:38:45,532 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2021-05-02 13:38:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:38:45,532 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2021-05-02 13:38:45,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2021-05-02 13:38:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-05-02 13:38:45,533 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:38:45,533 INFO L523 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:38:45,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:45,733 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:38:45,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:38:45,734 INFO L82 PathProgramCache]: Analyzing trace with hash -282440040, now seen corresponding path program 80 times [2021-05-02 13:38:45,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:38:45,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779502590] [2021-05-02 13:38:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:38:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:38:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:48,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:38:48,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779502590] [2021-05-02 13:38:48,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779502590] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:48,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995620039] [2021-05-02 13:38:48,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:48,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:38:48,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:38:48,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 13:38:48,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:38:48,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:48,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995620039] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:48,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:38:48,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 84 [2021-05-02 13:38:48,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129122617] [2021-05-02 13:38:48,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 13:38:48,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:38:48,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 13:38:48,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 13:38:48,508 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand has 84 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:38:52,746 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2021-05-02 13:38:52,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 13:38:52,747 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2021-05-02 13:38:52,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:38:52,747 INFO L225 Difference]: With dead ends: 99 [2021-05-02 13:38:52,747 INFO L226 Difference]: Without dead ends: 94 [2021-05-02 13:38:52,749 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 6358.8ms TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2021-05-02 13:38:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-02 13:38:52,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-05-02 13:38:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0112359550561798) internal successors, (90), 89 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-05-02 13:38:52,753 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2021-05-02 13:38:52,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:38:52,753 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-05-02 13:38:52,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:38:52,753 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-05-02 13:38:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 13:38:52,753 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:38:52,753 INFO L523 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:38:52,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:52,954 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:38:52,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:38:52,954 INFO L82 PathProgramCache]: Analyzing trace with hash -130317818, now seen corresponding path program 81 times [2021-05-02 13:38:52,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:38:52,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131607388] [2021-05-02 13:38:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:38:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:55,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:38:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:38:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:55,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:38:55,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131607388] [2021-05-02 13:38:55,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131607388] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:55,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323199914] [2021-05-02 13:38:55,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:38:55,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 13:38:55,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:38:55,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 13:38:55,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:38:55,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:38:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:38:55,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323199914] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:38:55,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:38:55,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 85 [2021-05-02 13:38:55,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782881154] [2021-05-02 13:38:55,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 13:38:55,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:38:55,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 13:38:55,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 13:38:55,819 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 85 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:39:00,180 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2021-05-02 13:39:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 13:39:00,180 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-02 13:39:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:39:00,181 INFO L225 Difference]: With dead ends: 100 [2021-05-02 13:39:00,181 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 13:39:00,182 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 6538.4ms TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2021-05-02 13:39:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 13:39:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-05-02 13:39:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.011111111111111) internal successors, (91), 90 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2021-05-02 13:39:00,186 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2021-05-02 13:39:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:39:00,186 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2021-05-02 13:39:00,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2021-05-02 13:39:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-02 13:39:00,187 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:39:00,187 INFO L523 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:39:00,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:00,387 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:39:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:39:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash 290503768, now seen corresponding path program 82 times [2021-05-02 13:39:00,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:39:00,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794712959] [2021-05-02 13:39:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:39:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:39:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:03,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:39:03,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794712959] [2021-05-02 13:39:03,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794712959] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:03,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011782939] [2021-05-02 13:39:03,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:03,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:39:03,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:39:03,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 13:39:03,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:39:03,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:03,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011782939] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:03,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:39:03,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 86 [2021-05-02 13:39:03,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122364886] [2021-05-02 13:39:03,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 13:39:03,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:39:03,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 13:39:03,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 13:39:03,316 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand has 86 states, 86 states have (on average 1.058139534883721) internal successors, (91), 85 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:39:07,877 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2021-05-02 13:39:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 13:39:07,878 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.058139534883721) internal successors, (91), 85 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2021-05-02 13:39:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:39:07,878 INFO L225 Difference]: With dead ends: 101 [2021-05-02 13:39:07,878 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 13:39:07,880 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 6791.2ms TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2021-05-02 13:39:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 13:39:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-02 13:39:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-05-02 13:39:07,884 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2021-05-02 13:39:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:39:07,884 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-05-02 13:39:07,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 1.058139534883721) internal successors, (91), 85 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-05-02 13:39:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 13:39:07,885 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:39:07,885 INFO L523 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:39:08,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:08,086 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:39:08,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:39:08,086 INFO L82 PathProgramCache]: Analyzing trace with hash 451071046, now seen corresponding path program 83 times [2021-05-02 13:39:08,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:39:08,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936730969] [2021-05-02 13:39:08,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:39:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:39:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:10,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:39:10,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936730969] [2021-05-02 13:39:10,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936730969] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:10,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231679657] [2021-05-02 13:39:10,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:11,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-05-02 13:39:11,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:39:11,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 13:39:11,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:39:11,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:11,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231679657] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:11,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:39:11,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 87 [2021-05-02 13:39:11,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240343023] [2021-05-02 13:39:11,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 13:39:11,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:39:11,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 13:39:11,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 13:39:11,279 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 87 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 86 states have internal predecessors, (92), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:39:15,811 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2021-05-02 13:39:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 13:39:15,811 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 86 states have internal predecessors, (92), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-02 13:39:15,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:39:15,812 INFO L225 Difference]: With dead ends: 102 [2021-05-02 13:39:15,812 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 13:39:15,813 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 7021.2ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-02 13:39:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 13:39:15,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-05-02 13:39:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0108695652173914) internal successors, (93), 92 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2021-05-02 13:39:15,817 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2021-05-02 13:39:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:39:15,817 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2021-05-02 13:39:15,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 86 states have internal predecessors, (92), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2021-05-02 13:39:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-05-02 13:39:15,818 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:39:15,818 INFO L523 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:39:16,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:16,018 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:39:16,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:39:16,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1133689368, now seen corresponding path program 84 times [2021-05-02 13:39:16,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:39:16,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147004158] [2021-05-02 13:39:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:39:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:18,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:39:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:18,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:39:18,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147004158] [2021-05-02 13:39:18,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147004158] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:18,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811044065] [2021-05-02 13:39:18,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:18,891 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 13:39:18,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:39:18,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 13:39:18,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:39:18,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:18,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:19,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811044065] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:19,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:39:19,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 88 [2021-05-02 13:39:19,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364133149] [2021-05-02 13:39:19,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 13:39:19,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:39:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 13:39:19,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 13:39:19,124 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 88 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 87 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:39:23,653 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2021-05-02 13:39:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 13:39:23,654 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 87 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2021-05-02 13:39:23,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:39:23,655 INFO L225 Difference]: With dead ends: 103 [2021-05-02 13:39:23,655 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 13:39:23,656 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 7042.6ms TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2021-05-02 13:39:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 13:39:23,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 13:39:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-05-02 13:39:23,660 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2021-05-02 13:39:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:39:23,660 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-05-02 13:39:23,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 87 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-05-02 13:39:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 13:39:23,661 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:39:23,661 INFO L523 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:39:23,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-05-02 13:39:23,861 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:39:23,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:39:23,862 INFO L82 PathProgramCache]: Analyzing trace with hash 820020870, now seen corresponding path program 85 times [2021-05-02 13:39:23,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:39:23,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602118292] [2021-05-02 13:39:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:39:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:26,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:39:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:26,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:39:26,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602118292] [2021-05-02 13:39:26,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602118292] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:26,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953093072] [2021-05-02 13:39:26,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:26,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 13:39:26,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:39:26,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:26,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:27,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953093072] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:27,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:39:27,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 89 [2021-05-02 13:39:27,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480293857] [2021-05-02 13:39:27,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 13:39:27,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:39:27,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 13:39:27,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 13:39:27,035 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 89 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:39:31,795 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2021-05-02 13:39:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 13:39:31,795 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-02 13:39:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:39:31,796 INFO L225 Difference]: With dead ends: 104 [2021-05-02 13:39:31,796 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 13:39:31,797 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 7255.9ms TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2021-05-02 13:39:31,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 13:39:31,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-05-02 13:39:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 94 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-05-02 13:39:31,801 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2021-05-02 13:39:31,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:39:31,801 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-05-02 13:39:31,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 88 states have internal predecessors, (94), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-05-02 13:39:31,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-05-02 13:39:31,802 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:39:31,802 INFO L523 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:39:32,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:32,003 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:39:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:39:32,003 INFO L82 PathProgramCache]: Analyzing trace with hash -313767976, now seen corresponding path program 86 times [2021-05-02 13:39:32,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:39:32,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002079830] [2021-05-02 13:39:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:39:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:39:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:34,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:39:34,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002079830] [2021-05-02 13:39:34,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002079830] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:34,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831766599] [2021-05-02 13:39:34,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:35,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:39:35,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:39:35,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 13:39:35,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:39:35,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:35,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831766599] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:35,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:39:35,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 90 [2021-05-02 13:39:35,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556383475] [2021-05-02 13:39:35,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 13:39:35,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:39:35,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 13:39:35,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 13:39:35,297 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 90 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 89 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:39:40,283 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2021-05-02 13:39:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 13:39:40,283 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 89 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2021-05-02 13:39:40,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:39:40,284 INFO L225 Difference]: With dead ends: 105 [2021-05-02 13:39:40,284 INFO L226 Difference]: Without dead ends: 100 [2021-05-02 13:39:40,285 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 7536.7ms TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2021-05-02 13:39:40,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-02 13:39:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-05-02 13:39:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2021-05-02 13:39:40,294 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2021-05-02 13:39:40,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:39:40,294 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2021-05-02 13:39:40,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 89 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:40,294 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2021-05-02 13:39:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 13:39:40,295 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:39:40,295 INFO L523 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:39:40,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-05-02 13:39:40,509 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:39:40,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:39:40,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1101483834, now seen corresponding path program 87 times [2021-05-02 13:39:40,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:39:40,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339180896] [2021-05-02 13:39:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:39:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:39:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:43,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:39:43,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339180896] [2021-05-02 13:39:43,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339180896] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:43,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124703904] [2021-05-02 13:39:43,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:43,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2021-05-02 13:39:43,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:39:43,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 13:39:43,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:39:43,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:43,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124703904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:43,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:39:43,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 91 [2021-05-02 13:39:43,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012381372] [2021-05-02 13:39:43,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 13:39:43,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:39:43,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 13:39:43,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 13:39:43,920 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 91 states, 91 states have (on average 1.054945054945055) internal successors, (96), 90 states have internal predecessors, (96), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:39:48,919 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2021-05-02 13:39:48,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 13:39:48,920 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.054945054945055) internal successors, (96), 90 states have internal predecessors, (96), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-05-02 13:39:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:39:48,920 INFO L225 Difference]: With dead ends: 106 [2021-05-02 13:39:48,920 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 13:39:48,922 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 7721.3ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-02 13:39:48,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 13:39:48,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-02 13:39:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0104166666666667) internal successors, (97), 96 states have internal predecessors, (97), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2021-05-02 13:39:48,926 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2021-05-02 13:39:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:39:48,926 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2021-05-02 13:39:48,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 1.054945054945055) internal successors, (96), 90 states have internal predecessors, (96), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2021-05-02 13:39:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-05-02 13:39:48,926 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:39:48,926 INFO L523 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:39:49,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 13:39:49,127 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:39:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:39:49,127 INFO L82 PathProgramCache]: Analyzing trace with hash 249128344, now seen corresponding path program 88 times [2021-05-02 13:39:49,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:39:49,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740044426] [2021-05-02 13:39:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:39:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:52,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:39:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:39:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:52,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:39:52,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740044426] [2021-05-02 13:39:52,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740044426] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:52,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589920360] [2021-05-02 13:39:52,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:52,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:39:52,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:39:52,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 13:39:52,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:39:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:39:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:39:52,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589920360] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:39:52,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:39:52,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 92 [2021-05-02 13:39:52,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329452083] [2021-05-02 13:39:52,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 13:39:52,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:39:52,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 13:39:52,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 13:39:52,636 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand has 92 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 91 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:57,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:39:57,919 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2021-05-02 13:39:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 13:39:57,919 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 91 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2021-05-02 13:39:57,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:39:57,920 INFO L225 Difference]: With dead ends: 107 [2021-05-02 13:39:57,920 INFO L226 Difference]: Without dead ends: 102 [2021-05-02 13:39:57,921 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 7998.1ms TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2021-05-02 13:39:57,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-02 13:39:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-05-02 13:39:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2021-05-02 13:39:57,925 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2021-05-02 13:39:57,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:39:57,925 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2021-05-02 13:39:57,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 91 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:39:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2021-05-02 13:39:57,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 13:39:57,926 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:39:57,926 INFO L523 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:39:58,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:39:58,127 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:39:58,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:39:58,127 INFO L82 PathProgramCache]: Analyzing trace with hash -831567098, now seen corresponding path program 89 times [2021-05-02 13:39:58,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:39:58,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910263957] [2021-05-02 13:39:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:39:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:01,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:40:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:01,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:40:01,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910263957] [2021-05-02 13:40:01,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910263957] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:01,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598434773] [2021-05-02 13:40:01,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:01,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-05-02 13:40:01,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:40:01,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 13:40:01,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:40:01,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:01,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598434773] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:01,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:40:01,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 93 [2021-05-02 13:40:01,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877650920] [2021-05-02 13:40:01,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 13:40:01,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:40:01,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 13:40:01,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 13:40:01,733 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand has 93 states, 93 states have (on average 1.053763440860215) internal successors, (98), 92 states have internal predecessors, (98), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:40:07,081 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-05-02 13:40:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 13:40:07,081 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.053763440860215) internal successors, (98), 92 states have internal predecessors, (98), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-02 13:40:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:40:07,082 INFO L225 Difference]: With dead ends: 108 [2021-05-02 13:40:07,082 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 13:40:07,083 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 8236.5ms TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2021-05-02 13:40:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 13:40:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-05-02 13:40:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.010204081632653) internal successors, (99), 98 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2021-05-02 13:40:07,088 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2021-05-02 13:40:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:40:07,088 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2021-05-02 13:40:07,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 1.053763440860215) internal successors, (98), 92 states have internal predecessors, (98), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2021-05-02 13:40:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-05-02 13:40:07,089 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:40:07,089 INFO L523 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:40:07,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:07,289 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:40:07,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:40:07,290 INFO L82 PathProgramCache]: Analyzing trace with hash 26612568, now seen corresponding path program 90 times [2021-05-02 13:40:07,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:40:07,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774513871] [2021-05-02 13:40:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:40:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:40:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:10,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:40:10,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774513871] [2021-05-02 13:40:10,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774513871] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:10,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672085645] [2021-05-02 13:40:10,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:10,855 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-05-02 13:40:10,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:40:10,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 13:40:10,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:40:10,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:10,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:11,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672085645] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:11,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:40:11,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 94 [2021-05-02 13:40:11,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715499882] [2021-05-02 13:40:11,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 13:40:11,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:40:11,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 13:40:11,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 13:40:11,119 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand has 94 states, 94 states have (on average 1.053191489361702) internal successors, (99), 93 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:40:16,426 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2021-05-02 13:40:16,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 13:40:16,427 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.053191489361702) internal successors, (99), 93 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-05-02 13:40:16,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:40:16,427 INFO L225 Difference]: With dead ends: 109 [2021-05-02 13:40:16,427 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 13:40:16,429 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 8494.0ms TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2021-05-02 13:40:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 13:40:16,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-02 13:40:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2021-05-02 13:40:16,434 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2021-05-02 13:40:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:40:16,434 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2021-05-02 13:40:16,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 1.053191489361702) internal successors, (99), 93 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2021-05-02 13:40:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 13:40:16,434 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:40:16,434 INFO L523 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:40:16,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:16,635 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:40:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:40:16,635 INFO L82 PathProgramCache]: Analyzing trace with hash 860378438, now seen corresponding path program 91 times [2021-05-02 13:40:16,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:40:16,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659693616] [2021-05-02 13:40:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:40:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:20,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:40:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:20,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:40:20,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659693616] [2021-05-02 13:40:20,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659693616] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:20,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507628039] [2021-05-02 13:40:20,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:20,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 13:40:20,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:40:20,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:20,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507628039] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:20,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:40:20,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 95 [2021-05-02 13:40:20,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749180052] [2021-05-02 13:40:20,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 13:40:20,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:40:20,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 13:40:20,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 13:40:20,392 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand has 95 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:40:26,080 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2021-05-02 13:40:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 13:40:26,081 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-02 13:40:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:40:26,082 INFO L225 Difference]: With dead ends: 110 [2021-05-02 13:40:26,082 INFO L226 Difference]: Without dead ends: 105 [2021-05-02 13:40:26,083 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 8617.1ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-02 13:40:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-02 13:40:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-05-02 13:40:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.01) internal successors, (101), 100 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2021-05-02 13:40:26,088 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2021-05-02 13:40:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:40:26,088 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2021-05-02 13:40:26,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2021-05-02 13:40:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-02 13:40:26,088 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:40:26,088 INFO L523 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:40:26,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:26,297 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:40:26,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:40:26,297 INFO L82 PathProgramCache]: Analyzing trace with hash 937316632, now seen corresponding path program 92 times [2021-05-02 13:40:26,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:40:26,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305532423] [2021-05-02 13:40:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:40:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:29,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:40:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:29,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:40:29,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305532423] [2021-05-02 13:40:29,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305532423] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:29,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797365330] [2021-05-02 13:40:29,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:29,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:40:29,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:40:29,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 13:40:29,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:40:29,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:29,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:30,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797365330] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:30,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:40:30,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 96 [2021-05-02 13:40:30,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301983589] [2021-05-02 13:40:30,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 13:40:30,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:40:30,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 13:40:30,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 13:40:30,177 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 95 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:36,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:40:36,002 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2021-05-02 13:40:36,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 13:40:36,003 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 95 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2021-05-02 13:40:36,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:40:36,004 INFO L225 Difference]: With dead ends: 111 [2021-05-02 13:40:36,004 INFO L226 Difference]: Without dead ends: 106 [2021-05-02 13:40:36,005 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 8875.7ms TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2021-05-02 13:40:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-02 13:40:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-05-02 13:40:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.00990099009901) internal successors, (102), 101 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-05-02 13:40:36,010 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2021-05-02 13:40:36,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:40:36,010 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-05-02 13:40:36,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 95 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-05-02 13:40:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 13:40:36,011 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:40:36,011 INFO L523 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:40:36,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:36,225 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:40:36,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:40:36,225 INFO L82 PathProgramCache]: Analyzing trace with hash -972566650, now seen corresponding path program 93 times [2021-05-02 13:40:36,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:40:36,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167194981] [2021-05-02 13:40:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:40:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:40:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:39,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:40:39,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167194981] [2021-05-02 13:40:39,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167194981] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:39,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649298092] [2021-05-02 13:40:39,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:39,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2021-05-02 13:40:39,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:40:39,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-02 13:40:39,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:40:39,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:39,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:40,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649298092] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:40,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:40:40,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 97 [2021-05-02 13:40:40,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126854474] [2021-05-02 13:40:40,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 13:40:40,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:40:40,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 13:40:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 13:40:40,217 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 97 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 96 states have internal predecessors, (102), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:40:45,954 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2021-05-02 13:40:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 13:40:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 96 states have internal predecessors, (102), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-02 13:40:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:40:45,955 INFO L225 Difference]: With dead ends: 112 [2021-05-02 13:40:45,955 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 13:40:45,957 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 8875.5ms TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2021-05-02 13:40:45,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 13:40:45,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-05-02 13:40:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0098039215686274) internal successors, (103), 102 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2021-05-02 13:40:45,962 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2021-05-02 13:40:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:40:45,962 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2021-05-02 13:40:45,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 96 states have internal predecessors, (102), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2021-05-02 13:40:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-05-02 13:40:45,962 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:40:45,963 INFO L523 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:40:46,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:46,177 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:40:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:40:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash -49406248, now seen corresponding path program 94 times [2021-05-02 13:40:46,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:40:46,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363035515] [2021-05-02 13:40:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:40:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:49,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:40:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:40:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:49,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:40:49,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363035515] [2021-05-02 13:40:49,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363035515] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:49,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148235679] [2021-05-02 13:40:49,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:49,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:40:49,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:40:49,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 13:40:49,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:40:49,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:49,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:40:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:40:50,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148235679] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:40:50,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:40:50,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 98 [2021-05-02 13:40:50,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084745913] [2021-05-02 13:40:50,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 13:40:50,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:40:50,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 13:40:50,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 13:40:50,172 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 98 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:40:56,106 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2021-05-02 13:40:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 13:40:56,106 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2021-05-02 13:40:56,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:40:56,107 INFO L225 Difference]: With dead ends: 113 [2021-05-02 13:40:56,107 INFO L226 Difference]: Without dead ends: 108 [2021-05-02 13:40:56,108 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 9097.5ms TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2021-05-02 13:40:56,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-05-02 13:40:56,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-05-02 13:40:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.0097087378640777) internal successors, (104), 103 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2021-05-02 13:40:56,115 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2021-05-02 13:40:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:40:56,116 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2021-05-02 13:40:56,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:40:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2021-05-02 13:40:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 13:40:56,116 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:40:56,116 INFO L523 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:40:56,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:40:56,329 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:40:56,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:40:56,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1496204858, now seen corresponding path program 95 times [2021-05-02 13:40:56,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:40:56,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526586520] [2021-05-02 13:40:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:40:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:00,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:41:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:00,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:41:00,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526586520] [2021-05-02 13:41:00,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526586520] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:00,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989559311] [2021-05-02 13:41:00,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:41:00,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-05-02 13:41:00,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:41:00,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 13:41:00,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:41:00,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:00,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989559311] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:00,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:41:00,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 99 [2021-05-02 13:41:00,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530407796] [2021-05-02 13:41:00,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 13:41:00,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:41:00,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 13:41:00,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 13:41:00,502 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand has 99 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:41:06,701 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2021-05-02 13:41:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 13:41:06,701 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2021-05-02 13:41:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:41:06,703 INFO L225 Difference]: With dead ends: 114 [2021-05-02 13:41:06,703 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 13:41:06,704 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 9497.2ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-02 13:41:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 13:41:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-05-02 13:41:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0096153846153846) internal successors, (105), 104 states have internal predecessors, (105), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:06,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2021-05-02 13:41:06,708 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2021-05-02 13:41:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:41:06,708 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2021-05-02 13:41:06,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2021-05-02 13:41:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-05-02 13:41:06,709 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:41:06,709 INFO L523 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:41:06,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:41:06,926 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:41:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:41:06,926 INFO L82 PathProgramCache]: Analyzing trace with hash 897678488, now seen corresponding path program 96 times [2021-05-02 13:41:06,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:41:06,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124797240] [2021-05-02 13:41:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:41:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:41:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:10,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:41:10,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124797240] [2021-05-02 13:41:10,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124797240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:10,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143273533] [2021-05-02 13:41:10,950 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:41:11,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-02 13:41:11,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:41:11,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 13:41:11,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:41:11,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:11,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143273533] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:11,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:41:11,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 100 [2021-05-02 13:41:11,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807593691] [2021-05-02 13:41:11,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 13:41:11,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:41:11,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 13:41:11,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 13:41:11,377 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand has 100 states, 100 states have (on average 1.05) internal successors, (105), 99 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:41:17,850 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2021-05-02 13:41:17,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 13:41:17,851 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.05) internal successors, (105), 99 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2021-05-02 13:41:17,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:41:17,851 INFO L225 Difference]: With dead ends: 115 [2021-05-02 13:41:17,851 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 13:41:17,853 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 9986.7ms TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2021-05-02 13:41:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 13:41:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-02 13:41:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-05-02 13:41:17,857 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2021-05-02 13:41:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:41:17,857 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-05-02 13:41:17,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 1.05) internal successors, (105), 99 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-05-02 13:41:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 13:41:17,858 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:41:17,858 INFO L523 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:41:18,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-02 13:41:18,075 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:41:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:41:18,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2093618182, now seen corresponding path program 97 times [2021-05-02 13:41:18,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:41:18,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805683945] [2021-05-02 13:41:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:41:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:41:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:22,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:41:22,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805683945] [2021-05-02 13:41:22,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805683945] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:22,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233200728] [2021-05-02 13:41:22,184 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:41:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:22,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 13:41:22,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:41:22,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:22,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233200728] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:22,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:41:22,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 101 [2021-05-02 13:41:22,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891644887] [2021-05-02 13:41:22,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 13:41:22,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:41:22,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 13:41:22,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 13:41:22,616 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 101 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 100 states have internal predecessors, (106), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:41:29,265 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2021-05-02 13:41:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 13:41:29,265 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 100 states have internal predecessors, (106), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-02 13:41:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:41:29,266 INFO L225 Difference]: With dead ends: 116 [2021-05-02 13:41:29,266 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 13:41:29,267 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 10238.6ms TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2021-05-02 13:41:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 13:41:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-05-02 13:41:29,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.009433962264151) internal successors, (107), 106 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:29,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2021-05-02 13:41:29,272 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2021-05-02 13:41:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:41:29,272 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2021-05-02 13:41:29,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 100 states have internal predecessors, (106), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2021-05-02 13:41:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-02 13:41:29,273 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:41:29,273 INFO L523 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:41:29,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:41:29,473 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:41:29,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:41:29,474 INFO L82 PathProgramCache]: Analyzing trace with hash 513043032, now seen corresponding path program 98 times [2021-05-02 13:41:29,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:41:29,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759155483] [2021-05-02 13:41:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:41:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:33,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:41:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:33,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:41:33,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759155483] [2021-05-02 13:41:33,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759155483] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:33,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407850013] [2021-05-02 13:41:33,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:41:33,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:41:33,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:41:33,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 13:41:33,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:41:33,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:33,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:34,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407850013] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:34,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:41:34,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 102 [2021-05-02 13:41:34,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436893918] [2021-05-02 13:41:34,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 13:41:34,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:41:34,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 13:41:34,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 13:41:34,165 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 101 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:41,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:41:41,110 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2021-05-02 13:41:41,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 13:41:41,110 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 101 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2021-05-02 13:41:41,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:41:41,111 INFO L225 Difference]: With dead ends: 117 [2021-05-02 13:41:41,111 INFO L226 Difference]: Without dead ends: 112 [2021-05-02 13:41:41,113 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 10694.8ms TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2021-05-02 13:41:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-02 13:41:41,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-02 13:41:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.0093457943925233) internal successors, (108), 107 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2021-05-02 13:41:41,117 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2021-05-02 13:41:41,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:41:41,117 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2021-05-02 13:41:41,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 101 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2021-05-02 13:41:41,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 13:41:41,117 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:41:41,117 INFO L523 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:41:41,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:41:41,325 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:41:41,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:41:41,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1240146362, now seen corresponding path program 99 times [2021-05-02 13:41:41,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:41:41,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881761017] [2021-05-02 13:41:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:41:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:41:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:45,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:41:45,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881761017] [2021-05-02 13:41:45,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881761017] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:45,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784083708] [2021-05-02 13:41:45,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:41:45,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2021-05-02 13:41:45,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:41:45,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-02 13:41:45,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:41:45,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:45,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784083708] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:45,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:41:45,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102] total 103 [2021-05-02 13:41:45,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87960569] [2021-05-02 13:41:45,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 13:41:45,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:41:45,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 13:41:45,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 13:41:45,988 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:52,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:41:52,778 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2021-05-02 13:41:52,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 13:41:52,778 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-02 13:41:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:41:52,779 INFO L225 Difference]: With dead ends: 118 [2021-05-02 13:41:52,779 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 13:41:52,780 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 10500.3ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-02 13:41:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 13:41:52,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-05-02 13:41:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0092592592592593) internal successors, (109), 108 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2021-05-02 13:41:52,784 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2021-05-02 13:41:52,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:41:52,785 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2021-05-02 13:41:52,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:41:52,785 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2021-05-02 13:41:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-05-02 13:41:52,785 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:41:52,785 INFO L523 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:41:52,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-02 13:41:52,986 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:41:52,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:41:52,986 INFO L82 PathProgramCache]: Analyzing trace with hash 245557272, now seen corresponding path program 100 times [2021-05-02 13:41:52,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:41:52,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649689305] [2021-05-02 13:41:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:41:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:58,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:41:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:41:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:58,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:41:58,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649689305] [2021-05-02 13:41:58,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649689305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:58,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344767607] [2021-05-02 13:41:58,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:41:58,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:41:58,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:41:58,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 205 conjunts are in the unsatisfiable core [2021-05-02 13:41:58,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:41:59,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:59,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:59,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:59,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:41:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:41:59,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344767607] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:41:59,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:41:59,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105] total 108 [2021-05-02 13:41:59,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637425354] [2021-05-02 13:41:59,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 13:41:59,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:41:59,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 13:41:59,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11341, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 13:41:59,284 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:42:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:42:12,573 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2021-05-02 13:42:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-02 13:42:12,574 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2021-05-02 13:42:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:42:12,574 INFO L225 Difference]: With dead ends: 119 [2021-05-02 13:42:12,574 INFO L226 Difference]: Without dead ends: 114 [2021-05-02 13:42:12,576 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5456 ImplicationChecksByTransitivity, 12994.7ms TimeCoverageRelationStatistics Valid=632, Invalid=43678, Unknown=0, NotChecked=0, Total=44310 [2021-05-02 13:42:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-02 13:42:12,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-05-02 13:42:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0091743119266054) internal successors, (110), 109 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:42:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2021-05-02 13:42:12,582 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2021-05-02 13:42:12,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:42:12,582 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2021-05-02 13:42:12,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:42:12,582 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2021-05-02 13:42:12,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 13:42:12,583 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:42:12,583 INFO L523 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:42:12,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 13:42:12,797 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:42:12,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:42:12,797 INFO L82 PathProgramCache]: Analyzing trace with hash -942270330, now seen corresponding path program 101 times [2021-05-02 13:42:12,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:42:12,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460058846] [2021-05-02 13:42:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:42:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:42:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:42:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:42:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 5151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:42:17,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:42:17,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460058846] [2021-05-02 13:42:17,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460058846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:42:17,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:42:17,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2021-05-02 13:42:17,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846223276] [2021-05-02 13:42:17,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 13:42:17,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:42:17,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 13:42:17,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 13:42:17,328 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:42:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:42:21,811 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2021-05-02 13:42:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 13:42:21,812 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2021-05-02 13:42:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:42:21,812 INFO L225 Difference]: With dead ends: 114 [2021-05-02 13:42:21,812 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 13:42:21,813 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5050 ImplicationChecksByTransitivity, 8620.5ms TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2021-05-02 13:42:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 13:42:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 13:42:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 13:42:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 13:42:21,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2021-05-02 13:42:21,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:42:21,814 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 13:42:21,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:42:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 13:42:21,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 13:42:21,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-02 13:42:21,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 13:42:22,069 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 683 [2021-05-02 13:42:26,041 WARN L205 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 675 DAG size of output: 659 [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:42:26,047 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:42:26,047 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 13:42:26,047 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:42:26,047 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 29) the Hoare annotation is: true [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point L27(line 27) no Hoare annotation was computed. [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 29) no Hoare annotation was computed. [2021-05-02 13:42:26,047 INFO L198 CegarLoopUtils]: For program point L22(line 22) no Hoare annotation was computed. [2021-05-02 13:42:26,049 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 26) the Hoare annotation is: (or (and (<= main_~i~0 38) (<= main_~j~0 76) (<= 38 main_~i~0) (<= 76 main_~j~0)) (and (<= 47 main_~i~0) (<= main_~i~0 47) (<= 94 main_~j~0) (<= main_~j~0 94)) (and (<= main_~i~0 8) (<= 8 main_~i~0) (<= 16 main_~j~0) (<= main_~j~0 16)) (and (<= main_~j~0 52) (<= main_~i~0 26) (<= 26 main_~i~0) (<= 52 main_~j~0)) (and (<= main_~i~0 4) (<= main_~j~0 8) (<= 4 main_~i~0) (<= 8 main_~j~0)) (and (<= 98 main_~j~0) (<= main_~i~0 49) (<= 49 main_~i~0) (<= main_~j~0 98)) (and (<= main_~i~0 57) (<= main_~j~0 114) (<= 114 main_~j~0) (<= 57 main_~i~0)) (and (<= main_~i~0 33) (<= 66 main_~j~0) (<= 33 main_~i~0) (<= main_~j~0 66)) (and (<= main_~i~0 65) (<= 130 main_~j~0) (<= main_~j~0 130) (<= 65 main_~i~0)) (and (<= main_~i~0 6) (<= 6 main_~i~0) (<= 12 main_~j~0) (<= main_~j~0 12)) (and (<= main_~j~0 194) (<= 97 main_~i~0) (<= 194 main_~j~0) (<= main_~i~0 97)) (and (<= main_~i~0 15) (<= 30 main_~j~0) (<= 15 main_~i~0) (<= main_~j~0 30)) (and (<= 84 main_~i~0) (<= 168 main_~j~0) (<= main_~i~0 84) (<= main_~j~0 168)) (and (<= 96 main_~j~0) (<= main_~j~0 96) (<= 48 main_~i~0) (<= main_~i~0 48)) (and (<= main_~j~0 200) (<= 100 main_~i~0) (< 199 main_~j~0)) (and (<= 82 main_~i~0) (<= main_~j~0 164) (<= main_~i~0 82) (<= 164 main_~j~0)) (and (<= main_~j~0 192) (<= 192 main_~j~0) (<= main_~i~0 96) (<= 96 main_~i~0)) (and (<= 66 main_~i~0) (<= main_~i~0 66) (<= 132 main_~j~0) (<= main_~j~0 132)) (and (<= 106 main_~j~0) (<= main_~i~0 53) (<= 53 main_~i~0) (<= main_~j~0 106)) (and (<= 36 main_~i~0) (<= main_~j~0 72) (<= main_~i~0 36) (<= 72 main_~j~0)) (and (<= 166 main_~j~0) (<= main_~j~0 166) (<= main_~i~0 83) (<= 83 main_~i~0)) (and (<= 43 main_~i~0) (<= 86 main_~j~0) (<= main_~j~0 86) (<= main_~i~0 43)) (and (<= 28 main_~i~0) (<= 56 main_~j~0) (<= main_~j~0 56) (<= main_~i~0 28)) (and (<= 152 main_~j~0) (<= main_~j~0 152) (<= 76 main_~i~0) (<= main_~i~0 76)) (and (<= main_~i~0 41) (<= 82 main_~j~0) (<= main_~j~0 82) (<= 41 main_~i~0)) (and (<= 51 main_~i~0) (<= main_~i~0 51) (<= main_~j~0 102) (<= 102 main_~j~0)) (and (<= 62 main_~j~0) (<= main_~j~0 62) (<= 31 main_~i~0) (<= main_~i~0 31)) (and (<= main_~j~0 154) (<= 77 main_~i~0) (<= main_~i~0 77) (<= 154 main_~j~0)) (and (<= main_~i~0 35) (<= 35 main_~i~0) (<= main_~j~0 70) (<= 70 main_~j~0)) (and (<= main_~i~0 89) (<= 178 main_~j~0) (<= main_~j~0 178) (<= 89 main_~i~0)) (and (<= 40 main_~j~0) (<= main_~j~0 40) (<= 20 main_~i~0) (<= main_~i~0 20)) (and (<= main_~i~0 73) (<= 146 main_~j~0) (<= main_~j~0 146) (<= 73 main_~i~0)) (and (<= 95 main_~i~0) (<= main_~i~0 95) (<= 190 main_~j~0) (<= main_~j~0 190)) (and (<= main_~j~0 138) (<= main_~i~0 69) (<= 69 main_~i~0) (<= 138 main_~j~0)) (and (<= 39 main_~i~0) (<= 78 main_~j~0) (<= main_~j~0 78) (<= main_~i~0 39)) (and (<= main_~j~0 0) (<= main_~i~0 0) (<= 0 main_~j~0) (<= 0 main_~i~0)) (and (<= main_~i~0 90) (<= 90 main_~i~0) (<= 180 main_~j~0) (<= main_~j~0 180)) (and (<= main_~i~0 50) (<= main_~j~0 100) (<= 100 main_~j~0) (<= 50 main_~i~0)) (and (<= 67 main_~i~0) (<= 134 main_~j~0) (<= main_~i~0 67) (<= main_~j~0 134)) (and (<= 85 main_~i~0) (<= 170 main_~j~0) (<= main_~j~0 170) (<= main_~i~0 85)) (and (<= main_~i~0 24) (<= main_~j~0 48) (<= 24 main_~i~0) (<= 48 main_~j~0)) (and (<= main_~j~0 2) (<= 1 main_~i~0) (<= 2 main_~j~0) (<= main_~i~0 1)) (and (<= 188 main_~j~0) (<= main_~j~0 188) (<= 94 main_~i~0) (<= main_~i~0 94)) (and (<= main_~i~0 14) (<= 14 main_~i~0) (<= 28 main_~j~0) (<= main_~j~0 28)) (and (<= 40 main_~i~0) (<= main_~j~0 80) (<= 80 main_~j~0) (<= main_~i~0 40)) (and (<= 118 main_~j~0) (<= main_~i~0 59) (<= 59 main_~i~0) (<= main_~j~0 118)) (and (<= main_~j~0 42) (<= 21 main_~i~0) (<= main_~i~0 21) (<= 42 main_~j~0)) (and (<= main_~j~0 108) (<= 108 main_~j~0) (<= main_~i~0 54) (<= 54 main_~i~0)) (and (<= 98 main_~i~0) (<= main_~j~0 196) (<= main_~i~0 98) (<= 196 main_~j~0)) (and (<= 61 main_~i~0) (<= main_~j~0 122) (<= main_~i~0 61) (<= 122 main_~j~0)) (and (<= 24 main_~j~0) (<= 12 main_~i~0) (<= main_~j~0 24) (<= main_~i~0 12)) (and (<= main_~i~0 93) (<= 186 main_~j~0) (<= main_~j~0 186) (<= 93 main_~i~0)) (and (<= main_~i~0 74) (<= 74 main_~i~0) (<= 148 main_~j~0) (<= main_~j~0 148)) (and (<= main_~i~0 23) (<= main_~j~0 46) (<= 23 main_~i~0) (<= 46 main_~j~0)) (and (<= main_~j~0 160) (<= 160 main_~j~0) (<= main_~i~0 80) (<= 80 main_~i~0)) (and (<= 56 main_~i~0) (<= main_~j~0 112) (<= main_~i~0 56) (<= 112 main_~j~0)) (and (<= main_~i~0 88) (<= 88 main_~i~0) (<= main_~j~0 176) (<= 176 main_~j~0)) (and (<= main_~j~0 104) (<= 52 main_~i~0) (<= 104 main_~j~0) (<= main_~i~0 52)) (and (<= 19 main_~i~0) (<= main_~i~0 19) (<= main_~j~0 38) (<= 38 main_~j~0)) (and (<= 42 main_~i~0) (<= main_~j~0 84) (<= main_~i~0 42) (<= 84 main_~j~0)) (and (<= main_~j~0 6) (<= 6 main_~j~0) (<= 3 main_~i~0) (<= main_~i~0 3)) (and (<= 10 main_~j~0) (<= 5 main_~i~0) (<= main_~i~0 5) (<= main_~j~0 10)) (and (<= 18 main_~j~0) (<= 9 main_~i~0) (<= main_~j~0 18) (<= main_~i~0 9)) (and (<= main_~i~0 30) (<= 30 main_~i~0) (<= 60 main_~j~0) (<= main_~j~0 60)) (and (<= 182 main_~j~0) (<= 91 main_~i~0) (<= main_~i~0 91) (<= main_~j~0 182)) (and (<= 174 main_~j~0) (<= main_~j~0 174) (<= main_~i~0 87) (<= 87 main_~i~0)) (and (<= 184 main_~j~0) (<= main_~i~0 92) (<= main_~j~0 184) (<= 92 main_~i~0)) (and (<= 62 main_~i~0) (<= main_~i~0 62) (<= main_~j~0 124) (<= 124 main_~j~0)) (and (<= 20 main_~j~0) (<= main_~j~0 20) (<= 10 main_~i~0) (<= main_~i~0 10)) (and (<= main_~i~0 16) (<= 32 main_~j~0) (<= main_~j~0 32) (<= 16 main_~i~0)) (and (<= 44 main_~i~0) (<= main_~j~0 88) (<= 88 main_~j~0) (<= main_~i~0 44)) (and (<= main_~i~0 75) (<= 150 main_~j~0) (<= 75 main_~i~0) (<= main_~j~0 150)) (and (<= main_~i~0 64) (<= 128 main_~j~0) (<= 64 main_~i~0) (<= main_~j~0 128)) (and (<= 58 main_~j~0) (<= 29 main_~i~0) (<= main_~i~0 29) (<= main_~j~0 58)) (and (<= 126 main_~j~0) (<= main_~j~0 126) (<= main_~i~0 63) (<= 63 main_~i~0)) (and (<= 22 main_~j~0) (<= main_~i~0 11) (<= main_~j~0 22) (<= 11 main_~i~0)) (and (<= main_~j~0 158) (<= 158 main_~j~0) (<= main_~i~0 79) (<= 79 main_~i~0)) (and (<= main_~i~0 58) (<= main_~j~0 116) (<= 116 main_~j~0) (<= 58 main_~i~0)) (and (<= 44 main_~j~0) (<= main_~j~0 44) (<= main_~i~0 22) (<= 22 main_~i~0)) (and (<= 2 main_~i~0) (<= 4 main_~j~0) (<= main_~j~0 4) (<= main_~i~0 2)) (and (<= 37 main_~i~0) (<= main_~i~0 37) (<= main_~j~0 74) (<= 74 main_~j~0)) (and (<= 50 main_~j~0) (<= main_~i~0 25) (<= main_~j~0 50) (<= 25 main_~i~0)) (and (<= 156 main_~j~0) (<= 78 main_~i~0) (<= main_~i~0 78) (<= main_~j~0 156)) (and (<= main_~i~0 70) (<= 140 main_~j~0) (<= 70 main_~i~0) (<= main_~j~0 140)) (and (<= main_~i~0 72) (<= 72 main_~i~0) (<= main_~j~0 144) (<= 144 main_~j~0)) (and (<= main_~j~0 110) (<= 55 main_~i~0) (<= main_~i~0 55) (<= 110 main_~j~0)) (and (<= 34 main_~j~0) (<= main_~j~0 34) (<= 17 main_~i~0) (<= main_~i~0 17)) (and (<= main_~j~0 36) (<= main_~i~0 18) (<= 36 main_~j~0) (<= 18 main_~i~0)) (and (<= main_~j~0 14) (<= 7 main_~i~0) (<= main_~i~0 7) (<= 14 main_~j~0)) (and (<= main_~i~0 81) (<= 81 main_~i~0) (<= 162 main_~j~0) (<= main_~j~0 162)) (and (<= main_~j~0 142) (<= 71 main_~i~0) (<= 142 main_~j~0) (<= main_~i~0 71)) (and (<= main_~j~0 90) (<= 90 main_~j~0) (<= main_~i~0 45) (<= 45 main_~i~0)) (and (<= main_~j~0 198) (<= main_~i~0 99) (<= 198 main_~j~0) (<= 99 main_~i~0)) (and (<= 68 main_~i~0) (<= main_~i~0 68) (<= main_~j~0 136) (<= 136 main_~j~0)) (and (<= main_~j~0 92) (<= 92 main_~j~0) (<= 46 main_~i~0) (<= main_~i~0 46)) (and (<= 120 main_~j~0) (<= main_~j~0 120) (<= main_~i~0 60) (<= 60 main_~i~0)) (and (<= 64 main_~j~0) (<= main_~i~0 32) (<= main_~j~0 64) (<= 32 main_~i~0)) (and (<= 27 main_~i~0) (<= 54 main_~j~0) (<= main_~j~0 54) (<= main_~i~0 27)) (and (<= 13 main_~i~0) (<= main_~j~0 26) (<= 26 main_~j~0) (<= main_~i~0 13)) (and (<= 86 main_~i~0) (<= main_~j~0 172) (<= 172 main_~j~0) (<= main_~i~0 86)) (and (<= main_~i~0 34) (<= 68 main_~j~0) (<= main_~j~0 68) (<= 34 main_~i~0))) [2021-05-02 13:42:26,049 INFO L194 CegarLoopUtils]: At program point L23-3(lines 23 26) the Hoare annotation is: (and (<= main_~j~0 200) (< 199 main_~j~0)) [2021-05-02 13:42:26,049 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 29) no Hoare annotation was computed. [2021-05-02 13:42:26,049 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-02 13:42:26,049 INFO L198 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-05-02 13:42:26,049 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-05-02 13:42:26,049 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2021-05-02 13:42:26,049 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2021-05-02 13:42:26,049 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-05-02 13:42:26,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 01:42:26 BoogieIcfgContainer [2021-05-02 13:42:26,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 13:42:26,071 INFO L168 Benchmark]: Toolchain (without parser) took 442911.09 ms. Allocated memory was 186.6 MB in the beginning and 468.7 MB in the end (delta: 282.1 MB). Free memory was 150.3 MB in the beginning and 338.1 MB in the end (delta: -187.8 MB). Peak memory consumption was 272.5 MB. Max. memory is 8.0 GB. [2021-05-02 13:42:26,071 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory is still 166.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 13:42:26,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.82 ms. Allocated memory is still 186.6 MB. Free memory was 150.0 MB in the beginning and 140.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 13:42:26,071 INFO L168 Benchmark]: Boogie Preprocessor took 38.62 ms. Allocated memory is still 186.6 MB. Free memory was 140.6 MB in the beginning and 139.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 13:42:26,071 INFO L168 Benchmark]: RCFGBuilder took 361.81 ms. Allocated memory is still 186.6 MB. Free memory was 139.1 MB in the beginning and 156.5 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. [2021-05-02 13:42:26,071 INFO L168 Benchmark]: TraceAbstraction took 442366.26 ms. Allocated memory was 186.6 MB in the beginning and 468.7 MB in the end (delta: 282.1 MB). Free memory was 156.0 MB in the beginning and 338.1 MB in the end (delta: -182.1 MB). Peak memory consumption was 278.2 MB. Max. memory is 8.0 GB. [2021-05-02 13:42:26,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory is still 166.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 135.82 ms. Allocated memory is still 186.6 MB. Free memory was 150.0 MB in the beginning and 140.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.62 ms. Allocated memory is still 186.6 MB. Free memory was 140.6 MB in the beginning and 139.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 361.81 ms. Allocated memory is still 186.6 MB. Free memory was 139.1 MB in the beginning and 156.5 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 442366.26 ms. Allocated memory was 186.6 MB in the beginning and 468.7 MB in the end (delta: 282.1 MB). Free memory was 156.0 MB in the beginning and 338.1 MB in the end (delta: -182.1 MB). Peak memory consumption was 278.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 438067.0ms, OverallIterations: 102, TraceHistogramMax: 101, EmptinessCheckTime: 38.0ms, AutomataDifference: 250723.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4231.6ms, InitialAbstractionConstructionTime: 13.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1123 SDtfs, 718 SDslu, 20065 SDs, 0 SdLazy, 39898 SolverSat, 5503 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15407.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17066 GetRequests, 6452 SyntacticMatches, 2 SemanticMatches, 10612 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182106 ImplicationChecksByTransitivity, 365617.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=101, InterpolantAutomatonStates: 5560, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 364.7ms AutomataMinimizationTime, 102 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 108 PreInvPairs, 210 NumberOfFragments, 1347 HoareAnnotationTreeSize, 108 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 250.2ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 2504 FormulaSimplificationTreeSizeReductionInter, 3967.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1258.6ms SsaConstructionTime, 4635.0ms SatisfiabilityAnalysisTime, 158062.2ms InterpolantComputationTime, 12625 NumberOfCodeBlocks, 12625 NumberOfCodeBlocksAsserted, 1494 NumberOfCheckSat, 12423 ConstructedInterpolants, 0 QuantifiedInterpolants, 36505 SizeOfPredicates, 1 NumberOfNonLiveVariables, 33350 ConjunctsInSsa, 5353 ConjunctsInUnsatCore, 202 InterpolantComputations, 2 PerfectInterpolantSequences, 5151/348551 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((i <= 38 && j <= 76) && 38 <= i) && 76 <= j) || (((47 <= i && i <= 47) && 94 <= j) && j <= 94)) || (((i <= 8 && 8 <= i) && 16 <= j) && j <= 16)) || (((j <= 52 && i <= 26) && 26 <= i) && 52 <= j)) || (((i <= 4 && j <= 8) && 4 <= i) && 8 <= j)) || (((98 <= j && i <= 49) && 49 <= i) && j <= 98)) || (((i <= 57 && j <= 114) && 114 <= j) && 57 <= i)) || (((i <= 33 && 66 <= j) && 33 <= i) && j <= 66)) || (((i <= 65 && 130 <= j) && j <= 130) && 65 <= i)) || (((i <= 6 && 6 <= i) && 12 <= j) && j <= 12)) || (((j <= 194 && 97 <= i) && 194 <= j) && i <= 97)) || (((i <= 15 && 30 <= j) && 15 <= i) && j <= 30)) || (((84 <= i && 168 <= j) && i <= 84) && j <= 168)) || (((96 <= j && j <= 96) && 48 <= i) && i <= 48)) || ((j <= 200 && 100 <= i) && 199 < j)) || (((82 <= i && j <= 164) && i <= 82) && 164 <= j)) || (((j <= 192 && 192 <= j) && i <= 96) && 96 <= i)) || (((66 <= i && i <= 66) && 132 <= j) && j <= 132)) || (((106 <= j && i <= 53) && 53 <= i) && j <= 106)) || (((36 <= i && j <= 72) && i <= 36) && 72 <= j)) || (((166 <= j && j <= 166) && i <= 83) && 83 <= i)) || (((43 <= i && 86 <= j) && j <= 86) && i <= 43)) || (((28 <= i && 56 <= j) && j <= 56) && i <= 28)) || (((152 <= j && j <= 152) && 76 <= i) && i <= 76)) || (((i <= 41 && 82 <= j) && j <= 82) && 41 <= i)) || (((51 <= i && i <= 51) && j <= 102) && 102 <= j)) || (((62 <= j && j <= 62) && 31 <= i) && i <= 31)) || (((j <= 154 && 77 <= i) && i <= 77) && 154 <= j)) || (((i <= 35 && 35 <= i) && j <= 70) && 70 <= j)) || (((i <= 89 && 178 <= j) && j <= 178) && 89 <= i)) || (((40 <= j && j <= 40) && 20 <= i) && i <= 20)) || (((i <= 73 && 146 <= j) && j <= 146) && 73 <= i)) || (((95 <= i && i <= 95) && 190 <= j) && j <= 190)) || (((j <= 138 && i <= 69) && 69 <= i) && 138 <= j)) || (((39 <= i && 78 <= j) && j <= 78) && i <= 39)) || (((j <= 0 && i <= 0) && 0 <= j) && 0 <= i)) || (((i <= 90 && 90 <= i) && 180 <= j) && j <= 180)) || (((i <= 50 && j <= 100) && 100 <= j) && 50 <= i)) || (((67 <= i && 134 <= j) && i <= 67) && j <= 134)) || (((85 <= i && 170 <= j) && j <= 170) && i <= 85)) || (((i <= 24 && j <= 48) && 24 <= i) && 48 <= j)) || (((j <= 2 && 1 <= i) && 2 <= j) && i <= 1)) || (((188 <= j && j <= 188) && 94 <= i) && i <= 94)) || (((i <= 14 && 14 <= i) && 28 <= j) && j <= 28)) || (((40 <= i && j <= 80) && 80 <= j) && i <= 40)) || (((118 <= j && i <= 59) && 59 <= i) && j <= 118)) || (((j <= 42 && 21 <= i) && i <= 21) && 42 <= j)) || (((j <= 108 && 108 <= j) && i <= 54) && 54 <= i)) || (((98 <= i && j <= 196) && i <= 98) && 196 <= j)) || (((61 <= i && j <= 122) && i <= 61) && 122 <= j)) || (((24 <= j && 12 <= i) && j <= 24) && i <= 12)) || (((i <= 93 && 186 <= j) && j <= 186) && 93 <= i)) || (((i <= 74 && 74 <= i) && 148 <= j) && j <= 148)) || (((i <= 23 && j <= 46) && 23 <= i) && 46 <= j)) || (((j <= 160 && 160 <= j) && i <= 80) && 80 <= i)) || (((56 <= i && j <= 112) && i <= 56) && 112 <= j)) || (((i <= 88 && 88 <= i) && j <= 176) && 176 <= j)) || (((j <= 104 && 52 <= i) && 104 <= j) && i <= 52)) || (((19 <= i && i <= 19) && j <= 38) && 38 <= j)) || (((42 <= i && j <= 84) && i <= 42) && 84 <= j)) || (((j <= 6 && 6 <= j) && 3 <= i) && i <= 3)) || (((10 <= j && 5 <= i) && i <= 5) && j <= 10)) || (((18 <= j && 9 <= i) && j <= 18) && i <= 9)) || (((i <= 30 && 30 <= i) && 60 <= j) && j <= 60)) || (((182 <= j && 91 <= i) && i <= 91) && j <= 182)) || (((174 <= j && j <= 174) && i <= 87) && 87 <= i)) || (((184 <= j && i <= 92) && j <= 184) && 92 <= i)) || (((62 <= i && i <= 62) && j <= 124) && 124 <= j)) || (((20 <= j && j <= 20) && 10 <= i) && i <= 10)) || (((i <= 16 && 32 <= j) && j <= 32) && 16 <= i)) || (((44 <= i && j <= 88) && 88 <= j) && i <= 44)) || (((i <= 75 && 150 <= j) && 75 <= i) && j <= 150)) || (((i <= 64 && 128 <= j) && 64 <= i) && j <= 128)) || (((58 <= j && 29 <= i) && i <= 29) && j <= 58)) || (((126 <= j && j <= 126) && i <= 63) && 63 <= i)) || (((22 <= j && i <= 11) && j <= 22) && 11 <= i)) || (((j <= 158 && 158 <= j) && i <= 79) && 79 <= i)) || (((i <= 58 && j <= 116) && 116 <= j) && 58 <= i)) || (((44 <= j && j <= 44) && i <= 22) && 22 <= i)) || (((2 <= i && 4 <= j) && j <= 4) && i <= 2)) || (((37 <= i && i <= 37) && j <= 74) && 74 <= j)) || (((50 <= j && i <= 25) && j <= 50) && 25 <= i)) || (((156 <= j && 78 <= i) && i <= 78) && j <= 156)) || (((i <= 70 && 140 <= j) && 70 <= i) && j <= 140)) || (((i <= 72 && 72 <= i) && j <= 144) && 144 <= j)) || (((j <= 110 && 55 <= i) && i <= 55) && 110 <= j)) || (((34 <= j && j <= 34) && 17 <= i) && i <= 17)) || (((j <= 36 && i <= 18) && 36 <= j) && 18 <= i)) || (((j <= 14 && 7 <= i) && i <= 7) && 14 <= j)) || (((i <= 81 && 81 <= i) && 162 <= j) && j <= 162)) || (((j <= 142 && 71 <= i) && 142 <= j) && i <= 71)) || (((j <= 90 && 90 <= j) && i <= 45) && 45 <= i)) || (((j <= 198 && i <= 99) && 198 <= j) && 99 <= i)) || (((68 <= i && i <= 68) && j <= 136) && 136 <= j)) || (((j <= 92 && 92 <= j) && 46 <= i) && i <= 46)) || (((120 <= j && j <= 120) && i <= 60) && 60 <= i)) || (((64 <= j && i <= 32) && j <= 64) && 32 <= i)) || (((27 <= i && 54 <= j) && j <= 54) && i <= 27)) || (((13 <= i && j <= 26) && 26 <= j) && i <= 13)) || (((86 <= i && j <= 172) && 172 <= j) && i <= 86)) || (((i <= 34 && 68 <= j) && j <= 68) && 34 <= i) RESULT: Ultimate proved your program to be correct! Received shutdown request...