/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-new/count_by_k.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:36:43,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:36:43,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:36:43,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 12:36:43,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:36:43,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:36:43,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:36:43,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:36:43,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:36:43,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:36:43,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:36:43,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:36:43,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:36:43,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:36:43,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:36:43,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:36:43,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 12:36:43,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:36:43,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:36:43,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:36:43,678 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 12:36:43,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:36:43,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:36:43,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:36:43,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:36:43,707 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:36:43,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:36:43,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:36:43,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:36:43,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:36:43,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:36:43,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:36:43,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:36:43,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:36:43,708 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:36:43,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:36:43,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:36:43,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:36:43,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:36:43,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:36:43,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:36:43,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:36:43,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:36:43,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:36:43,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:36:43,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:36:43,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:36:43,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:36:43,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:36:43,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:36:43,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:36:43,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:36:43,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:36:43,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:36:43,988 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:36:43,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_k.i [2021-05-02 12:36:44,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baff6972e/750a89dc631343c2bd15efc5b2c72365/FLAG7a35f70b3 [2021-05-02 12:36:44,326 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:36:44,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_k.i [2021-05-02 12:36:44,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baff6972e/750a89dc631343c2bd15efc5b2c72365/FLAG7a35f70b3 [2021-05-02 12:36:44,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baff6972e/750a89dc631343c2bd15efc5b2c72365 [2021-05-02 12:36:44,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:36:44,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:36:44,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:36:44,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:36:44,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:36:44,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:36:44" (1/1) ... [2021-05-02 12:36:44,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b0a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44, skipping insertion in model container [2021-05-02 12:36:44,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:36:44" (1/1) ... [2021-05-02 12:36:44,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:36:44,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:36:44,890 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-new/count_by_k.i[891,904] [2021-05-02 12:36:44,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:36:44,900 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:36:44,908 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-new/count_by_k.i[891,904] [2021-05-02 12:36:44,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:36:44,919 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:36:44,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44 WrapperNode [2021-05-02 12:36:44,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:36:44,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:36:44,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:36:44,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:36:44,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44" (1/1) ... [2021-05-02 12:36:44,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44" (1/1) ... [2021-05-02 12:36:44,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44" (1/1) ... [2021-05-02 12:36:44,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44" (1/1) ... [2021-05-02 12:36:44,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44" (1/1) ... [2021-05-02 12:36:44,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44" (1/1) ... [2021-05-02 12:36:44,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44" (1/1) ... [2021-05-02 12:36:44,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:36:44,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:36:44,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:36:44,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:36:44,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44" (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 12:36:45,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:36:45,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:36:45,029 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:36:45,029 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 12:36:45,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:36:45,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:36:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:36:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:36:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 12:36:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 12:36:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:36:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:36:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 12:36:45,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:36:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 12:36:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:36:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:36:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:36:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:36:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:36:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:36:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:36:45,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:36:45,201 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 12:36:45,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:36:45 BoogieIcfgContainer [2021-05-02 12:36:45,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:36:45,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:36:45,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:36:45,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:36:45,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:36:44" (1/3) ... [2021-05-02 12:36:45,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eb13ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:36:45, skipping insertion in model container [2021-05-02 12:36:45,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:36:44" (2/3) ... [2021-05-02 12:36:45,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eb13ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:36:45, skipping insertion in model container [2021-05-02 12:36:45,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:36:45" (3/3) ... [2021-05-02 12:36:45,207 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_k.i [2021-05-02 12:36:45,210 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:36:45,213 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:36:45,223 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:36:45,238 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:36:45,238 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:36:45,238 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:36:45,238 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:36:45,238 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:36:45,238 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:36:45,238 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:36:45,238 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:36:45,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 12:36:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 12:36:45,252 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:45,252 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:45,252 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:45,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:45,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1676006891, now seen corresponding path program 1 times [2021-05-02 12:36:45,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:45,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540607304] [2021-05-02 12:36:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:45,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:45,578 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 12:36:45,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:45,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540607304] [2021-05-02 12:36:45,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540607304] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:36:45,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:36:45,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 12:36:45,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110102180] [2021-05-02 12:36:45,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 12:36:45,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:45,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 12:36:45,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 12:36:45,598 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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 12:36:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:45,826 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2021-05-02 12:36:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 12:36:45,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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 12:36:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:45,831 INFO L225 Difference]: With dead ends: 43 [2021-05-02 12:36:45,831 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 12:36:45,834 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 184.8ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:36:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 12:36:45,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-05-02 12:36:45,856 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 12:36:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 12:36:45,858 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-05-02 12:36:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:45,858 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 12:36:45,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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 12:36:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 12:36:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 12:36:45,859 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:45,860 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:45,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:36:45,860 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:45,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:45,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1072109235, now seen corresponding path program 1 times [2021-05-02 12:36:45,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:45,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325070137] [2021-05-02 12:36:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:45,962 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 12:36:45,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:45,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325070137] [2021-05-02 12:36:45,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325070137] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:45,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23043516] [2021-05-02 12:36:45,964 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 12:36:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:46,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 12:36:46,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:46,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,122 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 12:36:46,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23043516] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:46,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:46,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-05-02 12:36:46,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394474497] [2021-05-02 12:36:46,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 12:36:46,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:46,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 12:36:46,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:36:46,126 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 3 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 12:36:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:46,364 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-05-02 12:36:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 12:36:46,365 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 3 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 14 [2021-05-02 12:36:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:46,366 INFO L225 Difference]: With dead ends: 27 [2021-05-02 12:36:46,366 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 12:36:46,367 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 238.3ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:36:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 12:36:46,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 12:36:46,373 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 12:36:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-05-02 12:36:46,376 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2021-05-02 12:36:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:46,376 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-05-02 12:36:46,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 3 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 12:36:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-05-02 12:36:46,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 12:36:46,379 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:46,384 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:46,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 12:36:46,600 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:46,601 INFO L82 PathProgramCache]: Analyzing trace with hash 139772271, now seen corresponding path program 2 times [2021-05-02 12:36:46,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:46,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858608944] [2021-05-02 12:36:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:46,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:46,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:46,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858608944] [2021-05-02 12:36:46,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858608944] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:46,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450079860] [2021-05-02 12:36:46,695 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 12:36:46,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:36:46,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:46,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 12:36:46,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:46,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:46,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450079860] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:46,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:46,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-05-02 12:36:46,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629028631] [2021-05-02 12:36:46,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 12:36:46,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:46,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 12:36:46,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:36:46,871 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 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 12:36:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:47,188 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-02 12:36:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 12:36:47,188 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 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 18 [2021-05-02 12:36:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:47,189 INFO L225 Difference]: With dead ends: 32 [2021-05-02 12:36:47,189 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 12:36:47,189 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 304.5ms TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:36:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 12:36:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 12:36:47,193 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 12:36:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-05-02 12:36:47,193 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 18 [2021-05-02 12:36:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:47,193 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-05-02 12:36:47,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 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 12:36:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-05-02 12:36:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 12:36:47,194 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:47,194 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:47,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:47,409 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:47,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1751393049, now seen corresponding path program 3 times [2021-05-02 12:36:47,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:47,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476165454] [2021-05-02 12:36:47,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:47,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:47,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:47,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476165454] [2021-05-02 12:36:47,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476165454] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:47,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692376251] [2021-05-02 12:36:47,513 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 12:36:47,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-05-02 12:36:47,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:47,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 12:36:47,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:47,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:47,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692376251] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:47,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:47,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 16 [2021-05-02 12:36:47,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952078254] [2021-05-02 12:36:47,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:36:47,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:47,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:36:47,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:36:47,709 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 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 12:36:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:48,212 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-02 12:36:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:36:48,212 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 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 26 [2021-05-02 12:36:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:48,213 INFO L225 Difference]: With dead ends: 40 [2021-05-02 12:36:48,213 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 12:36:48,214 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 512.9ms TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:36:48,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 12:36:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 12:36:48,218 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 12:36:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-05-02 12:36:48,219 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 26 [2021-05-02 12:36:48,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:48,219 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-05-02 12:36:48,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 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 12:36:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-05-02 12:36:48,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 12:36:48,220 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:48,220 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:48,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:48,426 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:48,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1481899937, now seen corresponding path program 4 times [2021-05-02 12:36:48,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:48,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771547373] [2021-05-02 12:36:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:48,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:48,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:48,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771547373] [2021-05-02 12:36:48,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771547373] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:48,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503564244] [2021-05-02 12:36:48,632 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 12:36:48,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:36:48,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:48,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 12:36:48,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:48,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:48,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503564244] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:48,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:48,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 20 [2021-05-02 12:36:48,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257175367] [2021-05-02 12:36:48,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 12:36:48,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:48,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 12:36:48,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:36:48,831 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 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 12:36:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:49,614 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-05-02 12:36:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 12:36:49,614 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 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 34 [2021-05-02 12:36:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:49,615 INFO L225 Difference]: With dead ends: 48 [2021-05-02 12:36:49,615 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 12:36:49,616 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 841.3ms TimeCoverageRelationStatistics Valid=343, Invalid=917, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:36:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 12:36:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-02 12:36:49,620 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 12:36:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-05-02 12:36:49,621 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 34 [2021-05-02 12:36:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:49,621 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-05-02 12:36:49,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 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 12:36:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-05-02 12:36:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-02 12:36:49,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:49,622 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:49,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:49,829 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:49,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:49,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2097337385, now seen corresponding path program 5 times [2021-05-02 12:36:49,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:49,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023205113] [2021-05-02 12:36:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:50,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:50,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:50,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023205113] [2021-05-02 12:36:50,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023205113] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:50,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572733116] [2021-05-02 12:36:50,021 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 12:36:50,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-05-02 12:36:50,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:50,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 12:36:50,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:50,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:50,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572733116] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:50,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:50,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 30 [2021-05-02 12:36:50,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698129216] [2021-05-02 12:36:50,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 12:36:50,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:50,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 12:36:50,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2021-05-02 12:36:50,412 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 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 12:36:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:51,722 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-05-02 12:36:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 12:36:51,723 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 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 42 [2021-05-02 12:36:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:51,723 INFO L225 Difference]: With dead ends: 56 [2021-05-02 12:36:51,723 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 12:36:51,724 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1491.3ms TimeCoverageRelationStatistics Valid=628, Invalid=1822, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 12:36:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 12:36:51,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-05-02 12:36:51,729 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 12:36:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-05-02 12:36:51,729 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 42 [2021-05-02 12:36:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:51,729 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-05-02 12:36:51,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 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 12:36:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-05-02 12:36:51,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 12:36:51,730 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:51,730 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:51,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 12:36:51,937 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:51,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2080857935, now seen corresponding path program 6 times [2021-05-02 12:36:51,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:51,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904248941] [2021-05-02 12:36:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:52,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:52,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904248941] [2021-05-02 12:36:52,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904248941] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:52,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360321530] [2021-05-02 12:36:52,236 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 12:36:52,275 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-05-02 12:36:52,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:52,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 12:36:52,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:52,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:52,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360321530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:52,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:52,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 28 [2021-05-02 12:36:52,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421989258] [2021-05-02 12:36:52,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 12:36:52,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:52,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 12:36:52,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:36:52,565 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 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 12:36:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:54,054 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2021-05-02 12:36:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 12:36:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 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 50 [2021-05-02 12:36:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:54,055 INFO L225 Difference]: With dead ends: 64 [2021-05-02 12:36:54,055 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 12:36:54,056 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1606.8ms TimeCoverageRelationStatistics Valid=703, Invalid=1949, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:36:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 12:36:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-05-02 12:36:54,060 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 12:36:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-05-02 12:36:54,061 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 50 [2021-05-02 12:36:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:54,061 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-05-02 12:36:54,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 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 12:36:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-05-02 12:36:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-02 12:36:54,062 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:54,062 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:54,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:54,277 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:54,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:54,277 INFO L82 PathProgramCache]: Analyzing trace with hash -314402105, now seen corresponding path program 7 times [2021-05-02 12:36:54,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:54,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250682681] [2021-05-02 12:36:54,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:54,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:54,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250682681] [2021-05-02 12:36:54,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250682681] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:54,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286884118] [2021-05-02 12:36:54,654 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 12:36:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:54,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 12:36:54,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:54,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:54,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286884118] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:54,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:54,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 32 [2021-05-02 12:36:54,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803693128] [2021-05-02 12:36:54,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 12:36:54,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:54,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 12:36:54,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=923, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:36:54,974 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 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 12:36:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:56,871 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2021-05-02 12:36:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 12:36:56,872 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 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 58 [2021-05-02 12:36:56,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:56,875 INFO L225 Difference]: With dead ends: 72 [2021-05-02 12:36:56,875 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 12:36:56,876 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2124.8ms TimeCoverageRelationStatistics Valid=931, Invalid=2609, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 12:36:56,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 12:36:56,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-05-02 12:36:56,892 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 12:36:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-05-02 12:36:56,892 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 58 [2021-05-02 12:36:56,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:56,893 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-05-02 12:36:56,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 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 12:36:56,893 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-05-02 12:36:56,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-02 12:36:56,894 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:56,894 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:57,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:57,094 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:57,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:57,095 INFO L82 PathProgramCache]: Analyzing trace with hash 958848575, now seen corresponding path program 8 times [2021-05-02 12:36:57,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:57,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010694640] [2021-05-02 12:36:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:57,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:57,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:57,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010694640] [2021-05-02 12:36:57,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010694640] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:57,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987430189] [2021-05-02 12:36:57,567 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 12:36:57,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:36:57,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:57,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 12:36:57,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:57,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:57,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987430189] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:57,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:57,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 36 [2021-05-02 12:36:57,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90649575] [2021-05-02 12:36:57,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 12:36:57,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:57,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 12:36:57,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1183, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:36:57,887 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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 12:37:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:00,249 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2021-05-02 12:37:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 12:37:00,250 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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 66 [2021-05-02 12:37:00,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:00,251 INFO L225 Difference]: With dead ends: 80 [2021-05-02 12:37:00,251 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 12:37:00,251 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2614.9ms TimeCoverageRelationStatistics Valid=1191, Invalid=3365, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:37:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 12:37:00,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-05-02 12:37:00,255 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 12:37:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2021-05-02 12:37:00,256 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 66 [2021-05-02 12:37:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:00,256 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2021-05-02 12:37:00,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 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 12:37:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2021-05-02 12:37:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-02 12:37:00,257 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:00,257 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:00,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 12:37:00,461 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:00,461 INFO L82 PathProgramCache]: Analyzing trace with hash -903075401, now seen corresponding path program 9 times [2021-05-02 12:37:00,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:00,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638884793] [2021-05-02 12:37:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:00,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:01,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:01,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638884793] [2021-05-02 12:37:01,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638884793] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:01,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667673711] [2021-05-02 12:37:01,005 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 12:37:01,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2021-05-02 12:37:01,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:01,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 12:37:01,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:01,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:01,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667673711] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:01,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:01,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 40 [2021-05-02 12:37:01,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577914435] [2021-05-02 12:37:01,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 12:37:01,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:01,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 12:37:01,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1475, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:37:01,352 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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 12:37:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:04,354 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2021-05-02 12:37:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 12:37:04,355 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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 74 [2021-05-02 12:37:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:04,356 INFO L225 Difference]: With dead ends: 88 [2021-05-02 12:37:04,356 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 12:37:04,357 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 3310.5ms TimeCoverageRelationStatistics Valid=1483, Invalid=4217, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:37:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 12:37:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-02 12:37:04,361 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 12:37:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2021-05-02 12:37:04,362 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 74 [2021-05-02 12:37:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:04,362 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2021-05-02 12:37:04,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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 12:37:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2021-05-02 12:37:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-02 12:37:04,363 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:04,363 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:04,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:04,579 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash 315260207, now seen corresponding path program 10 times [2021-05-02 12:37:04,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:04,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092891720] [2021-05-02 12:37:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:05,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:05,235 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 12:37:05,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:05,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092891720] [2021-05-02 12:37:05,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092891720] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:05,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937433060] [2021-05-02 12:37:05,236 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 12:37:05,286 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:37:05,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:05,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 12:37:05,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:05,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:05,599 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 12:37:05,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937433060] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:05,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:05,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 44 [2021-05-02 12:37:05,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026898008] [2021-05-02 12:37:05,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 12:37:05,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:05,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 12:37:05,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1799, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 12:37:05,603 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 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 12:37:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:09,227 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2021-05-02 12:37:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 12:37:09,227 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 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 82 [2021-05-02 12:37:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:09,228 INFO L225 Difference]: With dead ends: 96 [2021-05-02 12:37:09,228 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 12:37:09,229 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 4112.3ms TimeCoverageRelationStatistics Valid=1807, Invalid=5165, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:37:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 12:37:09,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-05-02 12:37:09,234 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 12:37:09,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2021-05-02 12:37:09,234 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 82 [2021-05-02 12:37:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:09,234 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2021-05-02 12:37:09,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 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 12:37:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2021-05-02 12:37:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-05-02 12:37:09,235 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:09,235 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:09,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:09,441 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:09,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:09,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1921394521, now seen corresponding path program 11 times [2021-05-02 12:37:09,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:09,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2325378] [2021-05-02 12:37:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:10,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:10,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:10,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2325378] [2021-05-02 12:37:10,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2325378] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:10,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357957961] [2021-05-02 12:37:10,256 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 12:37:10,302 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-05-02 12:37:10,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:10,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 12:37:10,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:10,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:10,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:11,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357957961] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:11,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:11,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 66 [2021-05-02 12:37:11,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035151615] [2021-05-02 12:37:11,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 12:37:11,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:11,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 12:37:11,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=3907, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 12:37:11,565 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 65 states have internal predecessors, (131), 2 states have call successors, (4), 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 12:37:11,899 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 32 [2021-05-02 12:37:12,083 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 31 [2021-05-02 12:37:12,270 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 12:37:12,467 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:37:12,660 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 12:37:12,864 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:37:13,052 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:37:13,237 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:37:13,423 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:37:13,609 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:37:13,797 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:37:13,982 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:37:14,164 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:37:14,345 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:37:14,527 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:37:14,711 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:37:14,901 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:37:15,080 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:37:15,258 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:37:15,440 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:37:15,609 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:37:18,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:18,171 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2021-05-02 12:37:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 12:37:18,177 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 65 states have internal predecessors, (131), 2 states have call successors, (4), 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 12:37:18,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:18,177 INFO L225 Difference]: With dead ends: 104 [2021-05-02 12:37:18,177 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 12:37:18,180 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 7967.8ms TimeCoverageRelationStatistics Valid=2956, Invalid=9034, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 12:37:18,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 12:37:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-05-02 12:37:18,184 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 12:37:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-05-02 12:37:18,185 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 90 [2021-05-02 12:37:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:18,185 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-05-02 12:37:18,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 65 states have internal predecessors, (131), 2 states have call successors, (4), 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 12:37:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-05-02 12:37:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-05-02 12:37:18,188 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:18,189 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:18,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 12:37:18,404 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:18,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1129169889, now seen corresponding path program 12 times [2021-05-02 12:37:18,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:18,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429557163] [2021-05-02 12:37:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:19,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:19,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:19,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429557163] [2021-05-02 12:37:19,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429557163] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:19,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170461610] [2021-05-02 12:37:19,450 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 12:37:19,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2021-05-02 12:37:19,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:19,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 12:37:19,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:19,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:19,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170461610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:19,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:19,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 52 [2021-05-02 12:37:19,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364297168] [2021-05-02 12:37:19,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 12:37:19,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:19,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 12:37:19,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2543, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:37:19,926 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 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 12:37:20,135 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 32 [2021-05-02 12:37:20,253 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 32 [2021-05-02 12:37:20,385 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 31 [2021-05-02 12:37:20,533 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:37:20,658 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:37:20,782 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:37:20,908 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:37:21,038 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:37:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:25,293 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2021-05-02 12:37:25,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 12:37:25,293 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 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 98 [2021-05-02 12:37:25,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:25,294 INFO L225 Difference]: With dead ends: 112 [2021-05-02 12:37:25,294 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 12:37:25,296 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 6156.7ms TimeCoverageRelationStatistics Valid=2551, Invalid=7349, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:37:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 12:37:25,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-05-02 12:37:25,300 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 12:37:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2021-05-02 12:37:25,301 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 98 [2021-05-02 12:37:25,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:25,301 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2021-05-02 12:37:25,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 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 12:37:25,301 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2021-05-02 12:37:25,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-05-02 12:37:25,302 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:25,302 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:25,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 12:37:25,505 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:25,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:25,506 INFO L82 PathProgramCache]: Analyzing trace with hash 720086935, now seen corresponding path program 13 times [2021-05-02 12:37:25,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:25,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129896785] [2021-05-02 12:37:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:26,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:26,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:26,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129896785] [2021-05-02 12:37:26,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129896785] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:26,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729788071] [2021-05-02 12:37:26,702 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 12:37:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:26,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 12:37:26,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:26,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:26,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:27,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729788071] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:27,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:27,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 56 [2021-05-02 12:37:27,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651364875] [2021-05-02 12:37:27,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 12:37:27,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:27,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 12:37:27,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=2963, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 12:37:27,262 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 states have internal predecessors, (111), 2 states have call successors, (4), 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 12:37:27,449 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 32 [2021-05-02 12:37:27,587 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 32 [2021-05-02 12:37:27,752 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 31 [2021-05-02 12:37:27,888 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:37:28,034 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:37:28,172 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:37:28,313 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:37:28,456 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:37:28,594 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:37:28,737 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:37:28,874 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:37:29,012 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:37:33,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:33,602 INFO L93 Difference]: Finished difference Result 120 states and 123 transitions. [2021-05-02 12:37:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 12:37:33,603 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 states have internal predecessors, (111), 2 states have call successors, (4), 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 12:37:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:33,603 INFO L225 Difference]: With dead ends: 120 [2021-05-02 12:37:33,604 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 12:37:33,605 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 7302.1ms TimeCoverageRelationStatistics Valid=2971, Invalid=8585, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 12:37:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 12:37:33,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-05-02 12:37:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.009090909090909) internal successors, (111), 110 states have internal predecessors, (111), 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 12:37:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2021-05-02 12:37:33,610 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 106 [2021-05-02 12:37:33,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:33,610 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2021-05-02 12:37:33,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 states have internal predecessors, (111), 2 states have call successors, (4), 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 12:37:33,610 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2021-05-02 12:37:33,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-05-02 12:37:33,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:33,611 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:33,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 12:37:33,817 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:33,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:33,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1788746511, now seen corresponding path program 14 times [2021-05-02 12:37:33,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:33,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142948297] [2021-05-02 12:37:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:35,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:35,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142948297] [2021-05-02 12:37:35,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142948297] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:35,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650404195] [2021-05-02 12:37:35,176 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 12:37:35,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:37:35,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:35,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 12:37:35,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:35,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:35,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650404195] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:35,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:35,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 60 [2021-05-02 12:37:35,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620049636] [2021-05-02 12:37:35,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 12:37:35,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:35,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 12:37:35,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3415, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 12:37:35,809 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand has 60 states, 60 states have (on average 1.9833333333333334) internal successors, (119), 59 states have internal predecessors, (119), 2 states have call successors, (4), 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 12:37:36,023 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 32 [2021-05-02 12:37:36,176 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 32 [2021-05-02 12:37:36,333 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 31 [2021-05-02 12:37:36,511 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:37:36,673 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:37:36,836 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:37:37,022 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:37:37,205 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:37:37,380 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:37:37,554 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:37:37,723 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:37:37,895 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:37:38,068 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:37:38,237 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:37:38,403 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:37:38,569 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:37:38,720 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:37:39,019 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 12:37:39,180 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:37:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:43,675 INFO L93 Difference]: Finished difference Result 128 states and 131 transitions. [2021-05-02 12:37:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 12:37:43,676 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.9833333333333334) internal successors, (119), 59 states have internal predecessors, (119), 2 states have call successors, (4), 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 114 [2021-05-02 12:37:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:43,676 INFO L225 Difference]: With dead ends: 128 [2021-05-02 12:37:43,676 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 12:37:43,677 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 8926.1ms TimeCoverageRelationStatistics Valid=3423, Invalid=9917, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 12:37:43,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 12:37:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-05-02 12:37:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0084745762711864) internal successors, (119), 118 states have internal predecessors, (119), 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 12:37:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2021-05-02 12:37:43,683 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 114 [2021-05-02 12:37:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:43,683 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2021-05-02 12:37:43,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.9833333333333334) internal successors, (119), 59 states have internal predecessors, (119), 2 states have call successors, (4), 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 12:37:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2021-05-02 12:37:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-02 12:37:43,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:43,684 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:43,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:43,897 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:43,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:43,897 INFO L82 PathProgramCache]: Analyzing trace with hash 373397127, now seen corresponding path program 15 times [2021-05-02 12:37:43,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:43,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862296943] [2021-05-02 12:37:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:45,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:45,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862296943] [2021-05-02 12:37:45,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862296943] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:45,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300898928] [2021-05-02 12:37:45,572 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 12:37:45,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 56 check-sat command(s) [2021-05-02 12:37:45,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:45,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 12:37:45,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:45,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:46,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:46,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:46,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:46,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300898928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:46,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:46,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 64 [2021-05-02 12:37:46,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827805425] [2021-05-02 12:37:46,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 12:37:46,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:46,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 12:37:46,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=3899, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:37:46,176 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand has 64 states, 64 states have (on average 1.984375) internal successors, (127), 63 states have internal predecessors, (127), 2 states have call successors, (4), 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 12:37:46,403 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 32 [2021-05-02 12:37:46,581 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 32 [2021-05-02 12:37:46,754 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 31 [2021-05-02 12:37:46,926 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:37:47,102 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:37:47,275 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:37:47,448 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:37:47,616 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:37:47,799 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:37:47,974 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:37:48,148 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:37:48,326 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:37:48,508 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:37:48,691 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:37:48,856 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:37:49,025 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:37:49,190 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:37:49,367 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:37:49,537 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:37:49,705 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:37:49,867 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:37:50,033 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:37:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:55,357 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2021-05-02 12:37:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 12:37:55,358 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.984375) internal successors, (127), 63 states have internal predecessors, (127), 2 states have call successors, (4), 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 122 [2021-05-02 12:37:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:55,358 INFO L225 Difference]: With dead ends: 136 [2021-05-02 12:37:55,358 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 12:37:55,360 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 10463.5ms TimeCoverageRelationStatistics Valid=3907, Invalid=11345, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 12:37:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 12:37:55,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-05-02 12:37:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.007936507936508) internal successors, (127), 126 states have internal predecessors, (127), 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 12:37:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2021-05-02 12:37:55,366 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 122 [2021-05-02 12:37:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:55,366 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2021-05-02 12:37:55,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.984375) internal successors, (127), 63 states have internal predecessors, (127), 2 states have call successors, (4), 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 12:37:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2021-05-02 12:37:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-05-02 12:37:55,367 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:55,367 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:55,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 12:37:55,581 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:55,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:55,582 INFO L82 PathProgramCache]: Analyzing trace with hash -800187905, now seen corresponding path program 16 times [2021-05-02 12:37:55,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:55,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936031928] [2021-05-02 12:37:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:57,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:57,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936031928] [2021-05-02 12:37:57,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936031928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:57,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862190501] [2021-05-02 12:37:57,542 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 12:37:57,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:37:57,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:57,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 12:37:57,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:57,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:57,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:58,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862190501] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:58,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:58,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 68 [2021-05-02 12:37:58,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453771127] [2021-05-02 12:37:58,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 12:37:58,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:58,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 12:37:58,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4415, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:37:58,369 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 states have internal predecessors, (135), 2 states have call successors, (4), 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 12:37:58,647 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 32 [2021-05-02 12:37:58,847 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 32 [2021-05-02 12:37:59,044 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 31 [2021-05-02 12:37:59,243 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:37:59,441 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 12:37:59,649 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:37:59,854 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 12:38:00,058 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:38:00,257 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:38:00,464 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:38:00,672 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:38:00,866 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:38:01,057 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:38:01,252 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:38:01,450 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:38:01,648 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:38:01,849 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:38:02,045 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:38:02,243 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:38:02,433 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:38:02,623 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:38:02,815 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:38:02,998 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:38:03,193 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:38:03,393 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:38:03,598 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:38:03,784 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 12:38:09,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:09,607 INFO L93 Difference]: Finished difference Result 144 states and 147 transitions. [2021-05-02 12:38:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 12:38:09,608 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 states have internal predecessors, (135), 2 states have call successors, (4), 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 130 [2021-05-02 12:38:09,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:09,609 INFO L225 Difference]: With dead ends: 144 [2021-05-02 12:38:09,609 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 12:38:09,610 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 12845.2ms TimeCoverageRelationStatistics Valid=4423, Invalid=12869, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 12:38:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 12:38:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-05-02 12:38:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.007462686567164) internal successors, (135), 134 states have internal predecessors, (135), 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 12:38:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2021-05-02 12:38:09,616 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 130 [2021-05-02 12:38:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:09,616 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2021-05-02 12:38:09,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 states have internal predecessors, (135), 2 states have call successors, (4), 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 12:38:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2021-05-02 12:38:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-02 12:38:09,617 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:09,617 INFO L523 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:09,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 12:38:09,827 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:09,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1127982455, now seen corresponding path program 17 times [2021-05-02 12:38:09,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:09,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244166837] [2021-05-02 12:38:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:12,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:12,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:12,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244166837] [2021-05-02 12:38:12,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244166837] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:12,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585810515] [2021-05-02 12:38:12,172 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 12:38:12,237 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-05-02 12:38:12,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:12,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 12:38:12,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:12,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:12,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:15,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585810515] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:15,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:15,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 102 [2021-05-02 12:38:15,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693283722] [2021-05-02 12:38:15,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 12:38:15,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:15,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 12:38:15,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=9505, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 12:38:15,723 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand has 102 states, 102 states have (on average 1.9901960784313726) internal successors, (203), 101 states have internal predecessors, (203), 2 states have call successors, (4), 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 12:38:16,024 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 32 [2021-05-02 12:38:16,427 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 32 [2021-05-02 12:38:16,865 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 31 [2021-05-02 12:38:17,290 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 33 [2021-05-02 12:38:17,701 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 33 [2021-05-02 12:38:18,132 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 33 [2021-05-02 12:38:18,573 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 33 [2021-05-02 12:38:18,991 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 33 [2021-05-02 12:38:19,409 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 33 [2021-05-02 12:38:19,843 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 33 [2021-05-02 12:38:20,267 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 33 [2021-05-02 12:38:20,685 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 33 [2021-05-02 12:38:21,118 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 33 [2021-05-02 12:38:21,562 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 33 [2021-05-02 12:38:21,977 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 12:38:22,416 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 33 [2021-05-02 12:38:22,854 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 12:38:23,270 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 33 [2021-05-02 12:38:23,676 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 12:38:24,101 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 12:38:24,509 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 12:38:24,931 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 12:38:25,356 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 12:38:25,774 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 12:38:26,193 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 12:38:26,612 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 12:38:27,042 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 12:38:27,473 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 12:38:27,908 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 12:38:28,322 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 12:38:28,749 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 12:38:29,174 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 12:38:29,587 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 12:38:29,963 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 12:38:30,365 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 12:38:30,746 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:38:31,122 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:38:31,500 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:38:31,881 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:38:32,251 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:38:32,603 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:38:32,960 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:38:33,298 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:38:33,663 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:38:33,981 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:38:34,295 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:38:34,598 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:38:34,904 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:38:35,202 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 12:38:35,518 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 12:38:35,792 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 12:38:39,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:39,453 INFO L93 Difference]: Finished difference Result 152 states and 155 transitions. [2021-05-02 12:38:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 12:38:39,454 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.9901960784313726) internal successors, (203), 101 states have internal predecessors, (203), 2 states have call successors, (4), 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 138 [2021-05-02 12:38:39,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:39,455 INFO L225 Difference]: With dead ends: 152 [2021-05-02 12:38:39,455 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 12:38:39,457 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3494 ImplicationChecksByTransitivity, 28292.7ms TimeCoverageRelationStatistics Valid=7012, Invalid=21718, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 12:38:39,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 12:38:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-05-02 12:38:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 142 states have internal predecessors, (143), 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 12:38:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2021-05-02 12:38:39,463 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 138 [2021-05-02 12:38:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:39,464 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2021-05-02 12:38:39,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 1.9901960784313726) internal successors, (203), 101 states have internal predecessors, (203), 2 states have call successors, (4), 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 12:38:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2021-05-02 12:38:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-05-02 12:38:39,465 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:39,465 INFO L523 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:39,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 12:38:39,681 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash 562182383, now seen corresponding path program 18 times [2021-05-02 12:38:39,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:39,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679689721] [2021-05-02 12:38:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:43,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:43,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:43,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679689721] [2021-05-02 12:38:43,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679689721] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:43,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988990130] [2021-05-02 12:38:43,096 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 12:38:43,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2021-05-02 12:38:43,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:43,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 12:38:43,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:43,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:43,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:44,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:44,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:44,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:44,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988990130] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:44,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:44,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 76 [2021-05-02 12:38:44,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740646724] [2021-05-02 12:38:44,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 12:38:44,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:44,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 12:38:44,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=5543, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:38:44,171 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 states have internal predecessors, (151), 2 states have call successors, (4), 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 12:38:44,539 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2021-05-02 12:38:44,831 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 32 [2021-05-02 12:38:45,124 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 31 [2021-05-02 12:38:45,406 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 12:38:45,703 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 12:38:45,995 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 12:38:46,272 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 12:38:46,581 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 12:38:46,885 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 12:38:47,176 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 12:38:47,488 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 12:38:47,801 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:38:48,096 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 12:38:48,395 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:38:48,692 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 12:38:48,972 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:38:49,262 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:38:49,553 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:38:49,841 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:38:50,118 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:38:50,409 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:38:50,700 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:38:50,984 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:38:51,268 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:38:51,552 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:38:51,841 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:38:52,132 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:38:52,425 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:38:52,719 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:38:53,037 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:38:53,304 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:38:53,546 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:38:53,842 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:38:54,127 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:38:54,414 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 12:38:54,717 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:38:55,003 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 12:38:55,288 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 12:38:55,563 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 12:38:55,839 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 12:38:56,110 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 12:38:56,381 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 12:38:56,653 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 12:38:56,920 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 12:38:57,215 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 12:38:57,999 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 12:39:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:03,409 INFO L93 Difference]: Finished difference Result 160 states and 163 transitions. [2021-05-02 12:39:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 12:39:03,411 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 states have internal predecessors, (151), 2 states have call successors, (4), 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 146 [2021-05-02 12:39:03,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:03,412 INFO L225 Difference]: With dead ends: 160 [2021-05-02 12:39:03,412 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 12:39:03,413 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 22080.7ms TimeCoverageRelationStatistics Valid=5551, Invalid=16205, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 12:39:03,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 12:39:03,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-05-02 12:39:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.0066666666666666) internal successors, (151), 150 states have internal predecessors, (151), 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 12:39:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2021-05-02 12:39:03,420 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 146 [2021-05-02 12:39:03,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:03,421 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2021-05-02 12:39:03,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 states have internal predecessors, (151), 2 states have call successors, (4), 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 12:39:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2021-05-02 12:39:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-05-02 12:39:03,421 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:03,422 INFO L523 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:03,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:03,622 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:03,623 INFO L82 PathProgramCache]: Analyzing trace with hash 630838375, now seen corresponding path program 19 times [2021-05-02 12:39:03,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:03,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035950897] [2021-05-02 12:39:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:07,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:07,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:07,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035950897] [2021-05-02 12:39:07,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035950897] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:07,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309384595] [2021-05-02 12:39:07,829 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 12:39:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:08,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 12:39:08,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:08,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:08,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:09,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:09,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:09,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:09,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:09,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309384595] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:09,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:09,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 80 [2021-05-02 12:39:09,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831195553] [2021-05-02 12:39:09,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 12:39:09,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 12:39:09,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6155, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:39:09,310 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand has 80 states, 80 states have (on average 1.9875) internal successors, (159), 79 states have internal predecessors, (159), 2 states have call successors, (4), 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 12:39:09,795 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 32 [2021-05-02 12:39:10,111 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 32 [2021-05-02 12:39:10,435 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 31 [2021-05-02 12:39:10,732 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 12:39:11,069 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 12:39:11,356 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 12:39:11,684 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 12:39:11,973 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 12:39:12,283 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 12:39:12,576 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 12:39:12,903 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 12:39:13,206 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 12:39:13,517 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 12:39:13,838 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 12:39:14,127 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 12:39:14,435 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:39:14,743 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 12:39:15,065 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:39:15,375 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 12:39:15,677 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:39:15,987 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:39:16,313 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:39:16,616 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:39:16,941 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:39:17,245 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:39:17,523 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:39:17,811 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:39:18,102 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:39:18,399 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:39:18,737 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:39:19,040 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:39:19,308 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:39:19,605 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:39:19,899 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:39:20,182 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:39:20,487 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:39:20,780 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:39:21,086 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:39:21,362 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 12:39:21,632 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:39:21,915 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 12:39:22,206 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 12:39:22,519 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 12:39:22,787 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 12:39:23,112 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 12:39:23,393 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 12:39:23,721 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 12:39:24,026 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 12:39:24,338 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 12:39:24,667 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 12:39:24,995 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 12:39:25,271 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 12:39:25,572 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 12:39:27,229 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 12:39:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:31,540 INFO L93 Difference]: Finished difference Result 168 states and 171 transitions. [2021-05-02 12:39:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 12:39:31,542 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.9875) internal successors, (159), 79 states have internal predecessors, (159), 2 states have call successors, (4), 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 154 [2021-05-02 12:39:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:31,543 INFO L225 Difference]: With dead ends: 168 [2021-05-02 12:39:31,543 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 12:39:31,544 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 25844.1ms TimeCoverageRelationStatistics Valid=6163, Invalid=18017, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 12:39:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 12:39:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-05-02 12:39:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 158 states have (on average 1.0063291139240507) internal successors, (159), 158 states have internal predecessors, (159), 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 12:39:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2021-05-02 12:39:31,551 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 154 [2021-05-02 12:39:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:31,551 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2021-05-02 12:39:31,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.9875) internal successors, (159), 79 states have internal predecessors, (159), 2 states have call successors, (4), 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 12:39:31,552 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2021-05-02 12:39:31,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-05-02 12:39:31,552 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:31,552 INFO L523 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:31,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:31,757 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:31,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:31,757 INFO L82 PathProgramCache]: Analyzing trace with hash 301627359, now seen corresponding path program 20 times [2021-05-02 12:39:31,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:31,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505397460] [2021-05-02 12:39:31,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:37,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:37,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:37,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505397460] [2021-05-02 12:39:37,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505397460] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:37,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516103621] [2021-05-02 12:39:37,558 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 12:39:37,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:39:37,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:37,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 12:39:37,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:38,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:39,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516103621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:39,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:39,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 84 [2021-05-02 12:39:39,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346143025] [2021-05-02 12:39:39,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 12:39:39,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:39,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 12:39:39,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=6799, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:39:39,743 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand has 84 states, 84 states have (on average 1.9880952380952381) internal successors, (167), 83 states have internal predecessors, (167), 2 states have call successors, (4), 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 12:39:40,364 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 32 [2021-05-02 12:39:40,724 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 32 [2021-05-02 12:39:41,084 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 31 [2021-05-02 12:39:41,457 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 12:39:41,831 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 12:39:42,207 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 12:39:42,596 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 12:39:43,050 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 12:39:43,430 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 12:39:43,841 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 12:39:44,245 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 12:39:44,647 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 12:39:45,031 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 12:39:45,412 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 12:39:45,787 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 12:39:46,187 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 12:39:46,588 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 12:39:46,978 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 12:39:47,351 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 12:39:47,705 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:39:48,071 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 12:39:48,486 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:39:48,882 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 12:39:49,283 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:39:49,694 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:39:50,115 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:39:50,490 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:39:50,879 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:39:51,293 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:39:51,696 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:39:52,162 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:39:52,599 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:39:53,004 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:39:53,428 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:39:53,845 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:39:54,268 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:39:54,670 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:39:55,085 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:39:55,469 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:39:55,829 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:39:56,192 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:39:56,563 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:39:56,934 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 12:39:57,299 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:39:57,673 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 12:39:58,064 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 12:39:58,441 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 12:39:58,805 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 12:39:59,177 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 12:39:59,590 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 12:40:00,005 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 12:40:00,409 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 12:40:00,805 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 12:40:01,213 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 12:40:01,658 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 12:40:02,035 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 12:40:02,477 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 12:40:02,878 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 12:40:03,283 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 12:40:03,729 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 12:40:04,125 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 12:40:04,599 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 12:40:04,986 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 12:40:05,425 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 12:40:05,856 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 12:40:06,289 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 12:40:06,711 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-05-02 12:40:07,104 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 12:40:07,565 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-05-02 12:40:07,995 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 12:40:08,773 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 12:40:09,157 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-05-02 12:40:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:11,887 INFO L93 Difference]: Finished difference Result 176 states and 179 transitions. [2021-05-02 12:40:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 12:40:11,890 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.9880952380952381) internal successors, (167), 83 states have internal predecessors, (167), 2 states have call successors, (4), 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 162 [2021-05-02 12:40:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:11,891 INFO L225 Difference]: With dead ends: 176 [2021-05-02 12:40:11,891 INFO L226 Difference]: Without dead ends: 171 [2021-05-02 12:40:11,893 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 37125.5ms TimeCoverageRelationStatistics Valid=6807, Invalid=19925, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 12:40:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-02 12:40:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-05-02 12:40:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 166 states have internal predecessors, (167), 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 12:40:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2021-05-02 12:40:11,901 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 162 [2021-05-02 12:40:11,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:11,901 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2021-05-02 12:40:11,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.9880952380952381) internal successors, (167), 83 states have internal predecessors, (167), 2 states have call successors, (4), 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 12:40:11,901 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2021-05-02 12:40:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-05-02 12:40:11,902 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:11,902 INFO L523 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:12,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 12:40:12,109 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:12,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1323556009, now seen corresponding path program 21 times [2021-05-02 12:40:12,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:12,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993338958] [2021-05-02 12:40:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:21,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:21,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:21,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993338958] [2021-05-02 12:40:21,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993338958] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:21,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630486533] [2021-05-02 12:40:21,188 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 12:40:21,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 80 check-sat command(s) [2021-05-02 12:40:21,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:40:21,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 12:40:21,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:21,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:21,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:23,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630486533] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:23,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:23,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 88 [2021-05-02 12:40:23,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278618865] [2021-05-02 12:40:23,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 12:40:23,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:23,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 12:40:23,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=7475, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:40:23,880 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand has 88 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 states have internal predecessors, (175), 2 states have call successors, (4), 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 12:40:24,763 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 32 [2021-05-02 12:40:25,281 WARN L205 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 32 [2021-05-02 12:40:25,772 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 31 [2021-05-02 12:40:26,304 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 12:40:26,865 WARN L205 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 12:40:27,377 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 12:40:27,919 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 12:40:28,437 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 12:40:28,961 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 12:40:29,476 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 12:40:29,925 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 12:40:30,420 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 12:40:30,883 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 12:40:31,373 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 12:40:31,874 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 12:40:32,377 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 12:40:32,881 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 12:40:33,425 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 12:40:33,969 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 12:40:34,460 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 12:40:34,970 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 12:40:35,466 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 12:40:36,017 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 12:40:36,545 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:40:37,112 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 12:40:37,693 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:40:38,258 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 12:40:38,844 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:40:39,402 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:40:39,955 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:40:40,462 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:40:40,964 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:40:41,506 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:40:42,025 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:40:42,556 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:40:43,107 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:40:43,693 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:40:44,241 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:40:44,794 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:40:45,327 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:40:45,860 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:40:46,361 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:40:46,900 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:40:47,458 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:40:47,990 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:40:48,601 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:40:49,174 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 12:40:49,728 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:40:50,257 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 12:40:50,845 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 12:40:51,419 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 12:40:51,942 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 12:40:52,514 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 12:40:53,090 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 12:40:53,676 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 12:40:54,259 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 12:40:54,862 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 12:40:55,423 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 12:40:55,968 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 12:40:56,523 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 12:40:57,034 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 12:40:57,650 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 12:40:58,260 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 12:40:58,879 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 12:40:59,407 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 12:40:59,969 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 12:41:00,482 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 12:41:01,017 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 12:41:01,561 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 12:41:02,114 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 12:41:02,626 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-05-02 12:41:03,150 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 12:41:03,715 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-05-02 12:41:04,269 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 12:41:04,800 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-05-02 12:41:05,315 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 12:41:05,856 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-05-02 12:41:06,363 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-02 12:41:06,883 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-05-02 12:41:08,341 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-05-02 12:41:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:41:09,715 INFO L93 Difference]: Finished difference Result 184 states and 187 transitions. [2021-05-02 12:41:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 12:41:09,721 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 states have internal predecessors, (175), 2 states have call successors, (4), 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 170 [2021-05-02 12:41:09,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:41:09,722 INFO L225 Difference]: With dead ends: 184 [2021-05-02 12:41:09,722 INFO L226 Difference]: Without dead ends: 179 [2021-05-02 12:41:09,724 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 53786.3ms TimeCoverageRelationStatistics Valid=7483, Invalid=21929, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 12:41:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-02 12:41:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-05-02 12:41:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.0057471264367817) internal successors, (175), 174 states have internal predecessors, (175), 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 12:41:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2021-05-02 12:41:09,734 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 170 [2021-05-02 12:41:09,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:41:09,735 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2021-05-02 12:41:09,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 states have internal predecessors, (175), 2 states have call successors, (4), 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 12:41:09,739 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2021-05-02 12:41:09,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-05-02 12:41:09,740 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:41:09,740 INFO L523 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:41:09,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 12:41:09,945 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:41:09,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:41:09,945 INFO L82 PathProgramCache]: Analyzing trace with hash -713632049, now seen corresponding path program 22 times [2021-05-02 12:41:09,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:41:09,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579912166] [2021-05-02 12:41:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:41:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:21,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:41:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:21,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:41:21,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579912166] [2021-05-02 12:41:21,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579912166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:21,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623936086] [2021-05-02 12:41:21,994 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 12:41:22,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:41:22,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:41:22,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 12:41:22,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:41:22,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:22,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:25,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:25,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:25,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:25,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623936086] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:25,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:41:25,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 92 [2021-05-02 12:41:25,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269218819] [2021-05-02 12:41:25,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 12:41:25,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:41:25,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 12:41:25,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=8183, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 12:41:25,936 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand has 92 states, 92 states have (on average 1.9891304347826086) internal successors, (183), 91 states have internal predecessors, (183), 2 states have call successors, (4), 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 12:41:27,058 WARN L205 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 32 [2021-05-02 12:41:27,657 WARN L205 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 32 [2021-05-02 12:41:28,346 WARN L205 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 31 [2021-05-02 12:41:28,982 WARN L205 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 12:41:29,637 WARN L205 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 33 [2021-05-02 12:41:30,264 WARN L205 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 12:41:30,872 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 33 [2021-05-02 12:41:31,526 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 12:41:32,165 WARN L205 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 12:41:32,805 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 12:41:33,446 WARN L205 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 12:41:34,102 WARN L205 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 12:41:34,747 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 12:41:35,376 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 12:41:36,079 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 12:41:36,760 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 12:41:37,461 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 12:41:38,100 WARN L205 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 12:41:38,734 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 12:41:39,363 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 12:41:39,995 WARN L205 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 12:41:40,604 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 12:41:41,194 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 12:41:41,821 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 12:41:42,485 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 12:41:43,152 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 12:41:43,892 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 12:41:44,614 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:41:45,360 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 12:41:46,133 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:41:46,825 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 12:41:47,610 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:41:48,332 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:41:48,998 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:41:49,689 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:41:50,355 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:41:51,034 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:41:51,715 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:41:52,454 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:41:53,148 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:41:53,845 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:41:54,616 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:41:55,346 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:41:56,020 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:41:56,654 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:41:57,311 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:41:57,942 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:41:58,589 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:41:59,258 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:41:59,908 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:42:00,600 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 12:42:01,173 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:42:01,799 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 12:42:02,507 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 12:42:03,211 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 12:42:04,001 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 12:42:04,736 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 12:42:05,459 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 12:42:06,180 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 12:42:06,890 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 12:42:07,677 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 12:42:08,445 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 12:42:09,193 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 12:42:09,851 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 12:42:10,496 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 12:42:11,156 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 12:42:11,856 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 12:42:12,506 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 12:42:13,175 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 12:42:13,856 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 12:42:14,538 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 12:42:15,196 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 12:42:15,842 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 12:42:16,551 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 12:42:17,238 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-05-02 12:42:17,966 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 12:42:18,698 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-05-02 12:42:19,365 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 12:42:20,023 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-05-02 12:42:20,642 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 12:42:21,280 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-05-02 12:42:21,994 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-02 12:42:22,695 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-05-02 12:42:23,348 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-05-02 12:42:24,430 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-05-02 12:42:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:42:26,139 INFO L93 Difference]: Finished difference Result 192 states and 195 transitions. [2021-05-02 12:42:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 12:42:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.9891304347826086) internal successors, (183), 91 states have internal predecessors, (183), 2 states have call successors, (4), 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 178 [2021-05-02 12:42:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:42:26,144 INFO L225 Difference]: With dead ends: 192 [2021-05-02 12:42:26,144 INFO L226 Difference]: Without dead ends: 187 [2021-05-02 12:42:26,146 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3839 ImplicationChecksByTransitivity, 70762.6ms TimeCoverageRelationStatistics Valid=8191, Invalid=24029, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 12:42:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-05-02 12:42:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-05-02 12:42:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 182 states have (on average 1.0054945054945055) internal successors, (183), 182 states have internal predecessors, (183), 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 12:42:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2021-05-02 12:42:26,153 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 178 [2021-05-02 12:42:26,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:42:26,154 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2021-05-02 12:42:26,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.9891304347826086) internal successors, (183), 91 states have internal predecessors, (183), 2 states have call successors, (4), 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 12:42:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2021-05-02 12:42:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-05-02 12:42:26,155 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:42:26,155 INFO L523 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:42:26,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:42:26,369 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:42:26,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:42:26,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1501729351, now seen corresponding path program 23 times [2021-05-02 12:42:26,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:42:26,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254514236] [2021-05-02 12:42:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:42:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:43,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:42:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:43,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:42:43,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254514236] [2021-05-02 12:42:43,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254514236] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:43,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490184748] [2021-05-02 12:42:43,974 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 12:42:44,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2021-05-02 12:42:44,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:42:44,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 12:42:44,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:42:44,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:51,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:51,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:51,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:51,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:52,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:52,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:53,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:53,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:53,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:53,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:54,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:54,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:54,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:54,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:58,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:58,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:59,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:59,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:59,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:59,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:00,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:00,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:01,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:01,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:01,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:01,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:02,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:02,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:03,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:03,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:04,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:04,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:05,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:05,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:06,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:06,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:06,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:06,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:07,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:07,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:08,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:08,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:09,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:09,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:09,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:10,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:10,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:10,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:11,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:11,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:12,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:12,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:12,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:12,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:13,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:13,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:14,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:14,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:15,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:15,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490184748] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:15,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:43:15,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 138 [2021-05-02 12:43:15,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26906617] [2021-05-02 12:43:15,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 138 states [2021-05-02 12:43:15,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:43:15,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2021-05-02 12:43:15,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=17551, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 12:43:15,224 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand has 138 states, 138 states have (on average 1.9927536231884058) internal successors, (275), 137 states have internal predecessors, (275), 2 states have call successors, (4), 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 12:43:17,084 WARN L205 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 32 [2021-05-02 12:43:18,436 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 423 DAG size of output: 32 [2021-05-02 12:43:19,801 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 421 DAG size of output: 31 [2021-05-02 12:43:21,113 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 420 DAG size of output: 33 [2021-05-02 12:43:22,462 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 417 DAG size of output: 33 [2021-05-02 12:43:23,792 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 414 DAG size of output: 33 [2021-05-02 12:43:25,138 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 411 DAG size of output: 33 [2021-05-02 12:43:26,443 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 408 DAG size of output: 33 [2021-05-02 12:43:27,820 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 405 DAG size of output: 33 [2021-05-02 12:43:29,200 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 402 DAG size of output: 33 [2021-05-02 12:43:30,528 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 399 DAG size of output: 33 [2021-05-02 12:43:31,821 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 396 DAG size of output: 33 [2021-05-02 12:43:33,213 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 393 DAG size of output: 33 [2021-05-02 12:43:34,693 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 390 DAG size of output: 33 [2021-05-02 12:43:36,167 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 387 DAG size of output: 33 [2021-05-02 12:43:37,607 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 384 DAG size of output: 33 [2021-05-02 12:43:39,110 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 381 DAG size of output: 33 [2021-05-02 12:43:40,439 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 378 DAG size of output: 33 [2021-05-02 12:43:41,839 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 375 DAG size of output: 33 [2021-05-02 12:43:43,198 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 372 DAG size of output: 33 [2021-05-02 12:43:44,525 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 369 DAG size of output: 33 [2021-05-02 12:43:45,826 WARN L205 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 33 [2021-05-02 12:43:47,120 WARN L205 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 33 [2021-05-02 12:43:48,477 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 360 DAG size of output: 33 [2021-05-02 12:43:49,824 WARN L205 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 33 [2021-05-02 12:43:51,134 WARN L205 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 33 [2021-05-02 12:43:52,539 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 351 DAG size of output: 33 [2021-05-02 12:43:53,926 WARN L205 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 33 [2021-05-02 12:43:55,365 WARN L205 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 345 DAG size of output: 33 [2021-05-02 12:43:56,702 WARN L205 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 33 [2021-05-02 12:43:58,051 WARN L205 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 33 [2021-05-02 12:43:59,401 WARN L205 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 33 [2021-05-02 12:44:00,651 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 33 [2021-05-02 12:44:01,961 WARN L205 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 33 [2021-05-02 12:44:03,295 WARN L205 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 33 [2021-05-02 12:44:04,680 WARN L205 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 33 [2021-05-02 12:44:06,084 WARN L205 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 33 [2021-05-02 12:44:07,461 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 33 [2021-05-02 12:44:08,895 WARN L205 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 33 [2021-05-02 12:44:10,335 WARN L205 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 33 [2021-05-02 12:44:11,697 WARN L205 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 33 [2021-05-02 12:44:13,136 WARN L205 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 33 [2021-05-02 12:44:14,651 WARN L205 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 33 [2021-05-02 12:44:16,129 WARN L205 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 33 [2021-05-02 12:44:17,524 WARN L205 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 33 [2021-05-02 12:44:18,956 WARN L205 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 33 [2021-05-02 12:44:20,308 WARN L205 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 33 [2021-05-02 12:44:21,607 WARN L205 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 12:44:23,068 WARN L205 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 12:44:24,473 WARN L205 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 12:44:25,913 WARN L205 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 12:44:27,370 WARN L205 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 12:44:28,755 WARN L205 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 12:44:30,085 WARN L205 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 12:44:31,392 WARN L205 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 12:44:32,737 WARN L205 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 12:44:34,133 WARN L205 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 12:44:35,432 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 12:44:36,779 WARN L205 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 12:44:38,165 WARN L205 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:44:39,474 WARN L205 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:44:40,737 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:44:41,854 WARN L205 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:44:43,064 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:44:44,250 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:44:45,430 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:44:46,600 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:44:47,774 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:44:48,910 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:44:49,947 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:44:51,013 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:44:52,097 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:44:53,175 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 12:44:54,243 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 12:44:55,361 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 12:44:56,456 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 12:44:57,543 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 12:44:58,599 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 12:44:59,531 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 12:45:00,395 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 12:45:01,377 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 12:45:02,514 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 12:45:03,571 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 12:45:04,634 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 12:45:05,763 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 12:45:06,848 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 12:45:07,961 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-02 12:45:08,975 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-05-02 12:45:10,586 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-05-02 12:45:13,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:13,869 INFO L93 Difference]: Finished difference Result 200 states and 203 transitions. [2021-05-02 12:45:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 12:45:13,877 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 1.9927536231884058) internal successors, (275), 137 states have internal predecessors, (275), 2 states have call successors, (4), 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 186 [2021-05-02 12:45:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:13,878 INFO L225 Difference]: With dead ends: 200 [2021-05-02 12:45:13,878 INFO L226 Difference]: Without dead ends: 195 [2021-05-02 12:45:13,881 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6386 ImplicationChecksByTransitivity, 158906.1ms TimeCoverageRelationStatistics Valid=12796, Invalid=39874, Unknown=0, NotChecked=0, Total=52670 [2021-05-02 12:45:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-05-02 12:45:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-05-02 12:45:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 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 12:45:13,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2021-05-02 12:45:13,896 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 186 [2021-05-02 12:45:13,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:13,896 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2021-05-02 12:45:13,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 138 states, 138 states have (on average 1.9927536231884058) internal successors, (275), 137 states have internal predecessors, (275), 2 states have call successors, (4), 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 12:45:13,896 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2021-05-02 12:45:13,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-05-02 12:45:13,897 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:13,897 INFO L523 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:14,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 12:45:14,116 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:14,117 INFO L82 PathProgramCache]: Analyzing trace with hash 532108735, now seen corresponding path program 24 times [2021-05-02 12:45:14,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:14,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225646327] [2021-05-02 12:45:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:41,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:41,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:41,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225646327] [2021-05-02 12:45:41,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225646327] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:41,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588171495] [2021-05-02 12:45:41,376 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 12:45:41,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2021-05-02 12:45:41,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:41,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 12:45:41,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:42,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:42,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:43,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:44,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:46,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:49,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588171495] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:49,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:49,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 100 [2021-05-02 12:45:49,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295989067] [2021-05-02 12:45:49,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 12:45:49,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:49,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 12:45:49,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=9695, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:45:49,624 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand has 100 states, 100 states have (on average 1.99) internal successors, (199), 99 states have internal predecessors, (199), 2 states have call successors, (4), 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 12:45:51,558 WARN L205 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 32 [2021-05-02 12:45:52,619 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 306 DAG size of output: 32 [2021-05-02 12:45:53,661 WARN L205 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 31 [2021-05-02 12:45:54,718 WARN L205 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 33 [2021-05-02 12:45:55,733 WARN L205 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 33 [2021-05-02 12:45:56,787 WARN L205 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 33 [2021-05-02 12:45:57,722 WARN L205 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 33 [2021-05-02 12:45:58,811 WARN L205 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 33 [2021-05-02 12:45:59,946 WARN L205 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 33 [2021-05-02 12:46:01,040 WARN L205 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 33 [2021-05-02 12:46:02,096 WARN L205 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 33 [2021-05-02 12:46:03,210 WARN L205 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 12:46:04,348 WARN L205 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 33 [2021-05-02 12:46:05,356 WARN L205 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 12:46:06,440 WARN L205 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 33 [2021-05-02 12:46:07,632 WARN L205 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 12:46:08,815 WARN L205 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 12:46:09,980 WARN L205 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 12:46:11,054 WARN L205 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 12:46:12,127 WARN L205 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 12:46:13,172 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 12:46:14,222 WARN L205 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 12:46:15,179 WARN L205 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 12:46:16,102 WARN L205 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 12:46:17,029 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 12:46:17,951 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 12:46:18,909 WARN L205 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 12:46:19,845 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 12:46:20,837 WARN L205 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 12:46:21,984 WARN L205 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 12:46:23,038 WARN L205 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 12:46:23,929 WARN L205 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 12:46:24,843 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 12:46:25,811 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 12:46:26,759 WARN L205 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 12:46:27,744 WARN L205 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:46:28,744 WARN L205 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 12:46:29,704 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:46:30,665 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 12:46:31,574 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:46:32,508 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:46:33,481 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:46:34,401 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:46:35,370 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:46:36,374 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:46:37,392 WARN L205 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:46:38,447 WARN L205 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:46:39,542 WARN L205 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:46:40,616 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:46:41,601 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:46:42,585 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:46:43,587 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:46:44,597 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:46:45,576 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:46:46,631 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:46:47,661 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:46:48,729 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:46:49,692 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:46:50,611 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 12:46:51,530 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:46:52,473 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 12:46:53,473 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 12:46:54,423 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 12:46:55,385 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 12:46:56,356 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 12:46:57,378 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 12:46:58,379 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 12:46:59,382 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 12:47:00,318 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 12:47:01,238 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 12:47:02,179 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 12:47:03,165 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 12:47:04,152 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 12:47:05,150 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 12:47:06,137 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 12:47:07,176 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 12:47:08,287 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 12:47:09,351 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 12:47:10,416 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 12:47:11,450 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 12:47:12,475 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 12:47:13,533 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 12:47:14,547 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-05-02 12:47:15,529 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 12:47:16,392 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-05-02 12:47:17,321 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 12:47:18,243 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-05-02 12:47:19,192 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 12:47:20,096 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-05-02 12:47:21,113 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-02 12:47:22,044 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-05-02 12:47:22,903 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-05-02 12:47:24,362 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-05-02 12:47:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:47:27,162 INFO L93 Difference]: Finished difference Result 208 states and 211 transitions. [2021-05-02 12:47:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 12:47:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.99) internal successors, (199), 99 states have internal predecessors, (199), 2 states have call successors, (4), 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 194 [2021-05-02 12:47:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:47:27,171 INFO L225 Difference]: With dead ends: 208 [2021-05-02 12:47:27,171 INFO L226 Difference]: Without dead ends: 203 [2021-05-02 12:47:27,173 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4571 ImplicationChecksByTransitivity, 122801.1ms TimeCoverageRelationStatistics Valid=9703, Invalid=28517, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 12:47:27,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-05-02 12:47:27,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-05-02 12:47:27,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.005050505050505) internal successors, (199), 198 states have internal predecessors, (199), 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 12:47:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2021-05-02 12:47:27,199 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 194 [2021-05-02 12:47:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:47:27,199 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2021-05-02 12:47:27,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 1.99) internal successors, (199), 99 states have internal predecessors, (199), 2 states have call successors, (4), 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 12:47:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2021-05-02 12:47:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-05-02 12:47:27,200 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:47:27,201 INFO L523 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:47:27,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:47:27,435 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:47:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:47:27,435 INFO L82 PathProgramCache]: Analyzing trace with hash 311238967, now seen corresponding path program 25 times [2021-05-02 12:47:27,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:47:27,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856603434] [2021-05-02 12:47:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:47:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:47:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 0 proven. 9025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:47:54,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:47:54,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856603434] [2021-05-02 12:47:54,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856603434] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:47:54,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417638502] [2021-05-02 12:47:54,711 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 12:47:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:55,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 12:47:55,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:47:56,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:56,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:57,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:58,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:59,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:00,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:01,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:01,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:02,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 0 proven. 9025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:48:02,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417638502] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:48:02,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:48:02,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 104 [2021-05-02 12:48:02,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063128223] [2021-05-02 12:48:02,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 12:48:02,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:48:02,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 12:48:02,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=10499, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 12:48:02,559 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand has 104 states, 104 states have (on average 1.9903846153846154) internal successors, (207), 103 states have internal predecessors, (207), 2 states have call successors, (4), 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 12:48:04,446 WARN L205 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 32 [2021-05-02 12:48:05,357 WARN L205 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 32 [2021-05-02 12:48:06,349 WARN L205 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 31 [2021-05-02 12:48:07,306 WARN L205 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 33 [2021-05-02 12:48:08,264 WARN L205 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 33 [2021-05-02 12:48:09,190 WARN L205 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 33 [2021-05-02 12:48:10,117 WARN L205 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 33 [2021-05-02 12:48:11,033 WARN L205 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 33 [2021-05-02 12:48:11,970 WARN L205 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 33 [2021-05-02 12:48:12,904 WARN L205 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 33 [2021-05-02 12:48:13,876 WARN L205 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 33 [2021-05-02 12:48:14,828 WARN L205 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 33 [2021-05-02 12:48:15,845 WARN L205 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 33 [2021-05-02 12:48:16,915 WARN L205 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 33 [2021-05-02 12:48:18,023 WARN L205 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 33 [2021-05-02 12:48:19,128 WARN L205 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 33 [2021-05-02 12:48:20,161 WARN L205 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 33 [2021-05-02 12:48:21,155 WARN L205 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 33 [2021-05-02 12:48:22,178 WARN L205 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 33 [2021-05-02 12:48:23,269 WARN L205 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 33 [2021-05-02 12:48:24,396 WARN L205 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 33 [2021-05-02 12:48:25,505 WARN L205 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 33 [2021-05-02 12:48:26,643 WARN L205 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 33 [2021-05-02 12:48:27,777 WARN L205 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 33 [2021-05-02 12:48:28,822 WARN L205 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 33 [2021-05-02 12:48:29,843 WARN L205 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 33 [2021-05-02 12:48:30,780 WARN L205 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 33 [2021-05-02 12:48:31,749 WARN L205 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 33 [2021-05-02 12:48:32,728 WARN L205 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 33 [2021-05-02 12:48:33,774 WARN L205 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 33 [2021-05-02 12:48:34,799 WARN L205 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 33 [2021-05-02 12:48:35,842 WARN L205 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 33 [2021-05-02 12:48:36,912 WARN L205 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 33 [2021-05-02 12:48:38,012 WARN L205 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 33 [2021-05-02 12:48:39,079 WARN L205 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 33 [2021-05-02 12:48:40,186 WARN L205 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 33 [2021-05-02 12:48:41,239 WARN L205 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 33 [2021-05-02 12:48:42,353 WARN L205 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-05-02 12:48:43,479 WARN L205 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 33 [2021-05-02 12:48:44,623 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 33 [2021-05-02 12:48:45,789 WARN L205 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 33 [2021-05-02 12:48:46,963 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 33 [2021-05-02 12:48:48,178 WARN L205 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 33 [2021-05-02 12:48:49,366 WARN L205 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 33 [2021-05-02 12:48:50,476 WARN L205 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 33 [2021-05-02 12:48:51,616 WARN L205 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 33 [2021-05-02 12:48:52,795 WARN L205 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 33 [2021-05-02 12:48:53,973 WARN L205 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 33 [2021-05-02 12:48:55,138 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 33 [2021-05-02 12:48:56,327 WARN L205 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 33 [2021-05-02 12:48:57,400 WARN L205 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2021-05-02 12:48:58,492 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2021-05-02 12:48:59,540 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 33 [2021-05-02 12:49:00,599 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 33 [2021-05-02 12:49:01,663 WARN L205 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 33 [2021-05-02 12:49:02,713 WARN L205 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2021-05-02 12:49:03,806 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2021-05-02 12:49:04,871 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 33 [2021-05-02 12:49:05,972 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 33 [2021-05-02 12:49:07,047 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 33 [2021-05-02 12:49:08,182 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 33 [2021-05-02 12:49:09,299 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 33 [2021-05-02 12:49:10,377 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2021-05-02 12:49:11,418 WARN L205 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 33 [2021-05-02 12:49:12,505 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 33 [2021-05-02 12:49:13,605 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2021-05-02 12:49:14,693 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 33 [2021-05-02 12:49:15,769 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 33 [2021-05-02 12:49:16,860 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 33 [2021-05-02 12:49:17,937 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 33 [2021-05-02 12:49:19,047 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2021-05-02 12:49:20,106 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2021-05-02 12:49:21,169 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 33 [2021-05-02 12:49:22,259 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 33 [2021-05-02 12:49:23,375 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 33 [2021-05-02 12:49:24,472 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 33 [2021-05-02 12:49:25,706 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 33 [2021-05-02 12:49:26,891 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2021-05-02 12:49:28,136 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2021-05-02 12:49:29,321 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-05-02 12:49:30,474 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 33 [2021-05-02 12:49:31,672 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2021-05-02 12:49:32,880 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2021-05-02 12:49:34,084 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2021-05-02 12:49:35,266 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2021-05-02 12:49:36,296 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-05-02 12:49:37,407 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-05-02 12:49:38,465 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2021-05-02 12:49:39,464 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2021-05-02 12:49:40,471 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-05-02 12:49:41,412 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2021-05-02 12:49:42,423 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2021-05-02 12:49:43,437 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-05-02 12:49:44,429 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2021-05-02 12:49:45,470 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-05-02 12:49:46,498 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-05-02 12:49:47,218 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-02 12:49:48,253 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-05-02 12:49:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:50,895 INFO L93 Difference]: Finished difference Result 216 states and 219 transitions. [2021-05-02 12:49:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 12:49:50,902 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.9903846153846154) internal successors, (207), 103 states have internal predecessors, (207), 2 states have call successors, (4), 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 202 [2021-05-02 12:49:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:50,903 INFO L225 Difference]: With dead ends: 216 [2021-05-02 12:49:50,903 INFO L226 Difference]: Without dead ends: 211 [2021-05-02 12:49:50,906 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4961 ImplicationChecksByTransitivity, 133232.0ms TimeCoverageRelationStatistics Valid=10507, Invalid=30905, Unknown=0, NotChecked=0, Total=41412 [2021-05-02 12:49:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-05-02 12:49:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-05-02 12:49:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 206 states have (on average 1.0048543689320388) internal successors, (207), 206 states have internal predecessors, (207), 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 12:49:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2021-05-02 12:49:50,914 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 202 [2021-05-02 12:49:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:50,915 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2021-05-02 12:49:50,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 1.9903846153846154) internal successors, (207), 103 states have internal predecessors, (207), 2 states have call successors, (4), 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 12:49:50,915 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2021-05-02 12:49:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-05-02 12:49:50,915 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:50,916 INFO L523 BasicCegarLoop]: trace histogram [99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:51,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 12:49:51,118 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:51,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:51,118 INFO L82 PathProgramCache]: Analyzing trace with hash 612103343, now seen corresponding path program 26 times [2021-05-02 12:49:51,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:51,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380529593] [2021-05-02 12:49:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:50:20,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:20,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380529593] [2021-05-02 12:50:20,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380529593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:20,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767357208] [2021-05-02 12:50:20,361 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 12:50:20,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:50:20,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:21,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 12:50:21,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:21,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:22,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:23,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:24,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:25,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:26,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:27,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:27,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:28,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:50:28,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767357208] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:28,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:28,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 108 [2021-05-02 12:50:28,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426266870] [2021-05-02 12:50:28,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 12:50:28,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:28,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 12:50:28,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=11335, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 12:50:28,752 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand has 108 states, 108 states have (on average 1.9907407407407407) internal successors, (215), 107 states have internal predecessors, (215), 2 states have call successors, (4), 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 12:50:30,602 WARN L205 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 32 [2021-05-02 12:50:31,550 WARN L205 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 32 [2021-05-02 12:50:32,531 WARN L205 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 31 [2021-05-02 12:50:33,514 WARN L205 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 33 [2021-05-02 12:50:34,567 WARN L205 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 33 [2021-05-02 12:50:35,609 WARN L205 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 33 [2021-05-02 12:50:36,575 WARN L205 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 33 [2021-05-02 12:50:37,590 WARN L205 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 33 [2021-05-02 12:50:38,594 WARN L205 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 33 [2021-05-02 12:50:39,588 WARN L205 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 33 [2021-05-02 12:50:40,577 WARN L205 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 33 [2021-05-02 12:50:41,551 WARN L205 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 33