/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/nested-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:44:59,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:44:59,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:44:59,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 12:44:59,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:44:59,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:44:59,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:44:59,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:44:59,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:44:59,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:44:59,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:44:59,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:44:59,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:44:59,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:44:59,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:44:59,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:44:59,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 12:44:59,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:44:59,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:44:59,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:44:59,204 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 12:44:59,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:44:59,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:44:59,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:44:59,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:44:59,247 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:44:59,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:44:59,247 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:44:59,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:44:59,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:44:59,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:44:59,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:44:59,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:44:59,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:44:59,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:44:59,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:44:59,250 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:44:59,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:44:59,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:44:59,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:44:59,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:44:59,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:44:59,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:44:59,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:44:59,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:44:59,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:44:59,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:44:59,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:44:59,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:44:59,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:44:59,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:44:59,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:44:59,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:44:59,592 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:44:59,593 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:44:59,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/nested-1.i [2021-05-02 12:44:59,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ad7eec2/01f3b07e75594aa5b2a95290d705b857/FLAG18be18e8f [2021-05-02 12:45:00,094 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:45:00,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/nested-1.i [2021-05-02 12:45:00,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ad7eec2/01f3b07e75594aa5b2a95290d705b857/FLAG18be18e8f [2021-05-02 12:45:00,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ad7eec2/01f3b07e75594aa5b2a95290d705b857 [2021-05-02 12:45:00,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:45:00,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:45:00,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:45:00,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:45:00,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:45:00,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:45:00" (1/1) ... [2021-05-02 12:45:00,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4015be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00, skipping insertion in model container [2021-05-02 12:45:00,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:45:00" (1/1) ... [2021-05-02 12:45:00,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:45:00,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:45:00,649 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/nested-1.i[891,904] [2021-05-02 12:45:00,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:45:00,675 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:45:00,688 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/nested-1.i[891,904] [2021-05-02 12:45:00,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:45:00,715 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:45:00,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00 WrapperNode [2021-05-02 12:45:00,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:45:00,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:45:00,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:45:00,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:45:00,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00" (1/1) ... [2021-05-02 12:45:00,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00" (1/1) ... [2021-05-02 12:45:00,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00" (1/1) ... [2021-05-02 12:45:00,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00" (1/1) ... [2021-05-02 12:45:00,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00" (1/1) ... [2021-05-02 12:45:00,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00" (1/1) ... [2021-05-02 12:45:00,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00" (1/1) ... [2021-05-02 12:45:00,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:45:00,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:45:00,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:45:00,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:45:00,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00" (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 12:45:00,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:45:00,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:45:00,903 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:45:00,903 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 12:45:00,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:45:00,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:45:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:45:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:45:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 12:45:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 12:45:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:45:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:45:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 12:45:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:45:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 12:45:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:45:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:45:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:45:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:45:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:45:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:45:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:45:01,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:45:01,175 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 12:45:01,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:45:01 BoogieIcfgContainer [2021-05-02 12:45:01,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:45:01,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:45:01,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:45:01,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:45:01,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:45:00" (1/3) ... [2021-05-02 12:45:01,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a13f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:45:01, skipping insertion in model container [2021-05-02 12:45:01,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:45:00" (2/3) ... [2021-05-02 12:45:01,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a13f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:45:01, skipping insertion in model container [2021-05-02 12:45:01,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:45:01" (3/3) ... [2021-05-02 12:45:01,191 INFO L111 eAbstractionObserver]: Analyzing ICFG nested-1.i [2021-05-02 12:45:01,196 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:45:01,199 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:45:01,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:45:01,231 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:45:01,231 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:45:01,231 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:45:01,231 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:45:01,232 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:45:01,232 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:45:01,232 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:45:01,232 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:45:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 12:45:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 12:45:01,256 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:01,256 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:01,256 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:01,261 INFO L82 PathProgramCache]: Analyzing trace with hash 486387592, now seen corresponding path program 1 times [2021-05-02 12:45:01,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:01,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108639972] [2021-05-02 12:45:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:01,567 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 12:45:01,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:01,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108639972] [2021-05-02 12:45:01,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108639972] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:45:01,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:45:01,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 12:45:01,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338874602] [2021-05-02 12:45:01,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 12:45:01,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:01,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 12:45:01,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 12:45:01,588 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 12:45:01,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:01,763 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2021-05-02 12:45:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 12:45:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 13 [2021-05-02 12:45:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:01,770 INFO L225 Difference]: With dead ends: 46 [2021-05-02 12:45:01,771 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 12:45:01,773 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-02 12:45:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 12:45:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2021-05-02 12:45:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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 12:45:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-02 12:45:01,808 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2021-05-02 12:45:01,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:01,809 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-02 12:45:01,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 12:45:01,809 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-02 12:45:01,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 12:45:01,810 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:01,810 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:01,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:45:01,811 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:01,812 INFO L82 PathProgramCache]: Analyzing trace with hash 123963385, now seen corresponding path program 1 times [2021-05-02 12:45:01,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:01,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862361971] [2021-05-02 12:45:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:01,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:01,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862361971] [2021-05-02 12:45:01,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862361971] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:45:01,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:45:01,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 12:45:01,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870595846] [2021-05-02 12:45:01,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 12:45:01,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:01,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 12:45:01,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 12:45:01,924 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 12:45:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:02,075 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-05-02 12:45:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 12:45:02,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 16 [2021-05-02 12:45:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:02,077 INFO L225 Difference]: With dead ends: 29 [2021-05-02 12:45:02,077 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 12:45:02,078 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-02 12:45:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 12:45:02,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-05-02 12:45:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-05-02 12:45:02,084 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2021-05-02 12:45:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:02,084 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-05-02 12:45:02,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 12:45:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-05-02 12:45:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 12:45:02,085 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:02,085 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:02,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 12:45:02,085 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:02,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1005518441, now seen corresponding path program 1 times [2021-05-02 12:45:02,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:02,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085105711] [2021-05-02 12:45:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:02,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:02,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085105711] [2021-05-02 12:45:02,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085105711] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:02,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223281625] [2021-05-02 12:45:02,237 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 12:45:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:02,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 12:45:02,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:02,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:02,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:02,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:02,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223281625] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:02,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:02,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2021-05-02 12:45:02,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74814943] [2021-05-02 12:45:02,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 12:45:02,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:02,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 12:45:02,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:45:02,498 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:02,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:02,675 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-02 12:45:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 12:45:02,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-05-02 12:45:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:02,678 INFO L225 Difference]: With dead ends: 32 [2021-05-02 12:45:02,678 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 12:45:02,681 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 173.3ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:45:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 12:45:02,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-05-02 12:45:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-05-02 12:45:02,693 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2021-05-02 12:45:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:02,693 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-05-02 12:45:02,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-05-02 12:45:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 12:45:02,696 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:02,696 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:02,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 12:45:02,913 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:02,914 INFO L82 PathProgramCache]: Analyzing trace with hash 189172661, now seen corresponding path program 2 times [2021-05-02 12:45:02,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:02,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547845652] [2021-05-02 12:45:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:03,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:03,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547845652] [2021-05-02 12:45:03,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547845652] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:03,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308225623] [2021-05-02 12:45:03,006 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 12:45:03,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:45:03,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:03,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 12:45:03,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:03,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:03,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:03,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:03,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:03,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308225623] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:03,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:03,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-05-02 12:45:03,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871120732] [2021-05-02 12:45:03,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 12:45:03,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:03,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 12:45:03,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-05-02 12:45:03,225 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 12:45:03,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:03,396 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-05-02 12:45:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 12:45:03,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 20 [2021-05-02 12:45:03,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:03,399 INFO L225 Difference]: With dead ends: 36 [2021-05-02 12:45:03,399 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 12:45:03,401 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 156.4ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:45:03,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 12:45:03,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-05-02 12:45:03,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-05-02 12:45:03,410 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2021-05-02 12:45:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:03,410 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-05-02 12:45:03,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 12:45:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-05-02 12:45:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 12:45:03,412 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:03,413 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:03,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:03,639 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:03,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:03,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1531053651, now seen corresponding path program 3 times [2021-05-02 12:45:03,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:03,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493870122] [2021-05-02 12:45:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:03,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:03,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493870122] [2021-05-02 12:45:03,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493870122] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:03,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938537971] [2021-05-02 12:45:03,770 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 12:45:03,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 12:45:03,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:03,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 12:45:03,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:03,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:03,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:03,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:45:03,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938537971] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:03,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:03,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-05-02 12:45:03,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79797133] [2021-05-02 12:45:03,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 12:45:03,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:03,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 12:45:03,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:45:03,972 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:04,610 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2021-05-02 12:45:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 12:45:04,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-05-02 12:45:04,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:04,611 INFO L225 Difference]: With dead ends: 63 [2021-05-02 12:45:04,611 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 12:45:04,612 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 585.7ms TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2021-05-02 12:45:04,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 12:45:04,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2021-05-02 12:45:04,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-05-02 12:45:04,620 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 22 [2021-05-02 12:45:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:04,620 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-05-02 12:45:04,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-05-02 12:45:04,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 12:45:04,621 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:04,621 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:04,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:04,837 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:04,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:04,838 INFO L82 PathProgramCache]: Analyzing trace with hash 701404136, now seen corresponding path program 4 times [2021-05-02 12:45:04,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:04,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818431668] [2021-05-02 12:45:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:04,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 12:45:04,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:04,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818431668] [2021-05-02 12:45:04,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818431668] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:04,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945713009] [2021-05-02 12:45:04,970 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 12:45:05,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:45:05,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:05,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 12:45:05,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:05,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 12:45:05,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945713009] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:05,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:05,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-05-02 12:45:05,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068411895] [2021-05-02 12:45:05,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 12:45:05,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:05,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 12:45:05,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:45:05,207 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:05,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:05,425 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-05-02 12:45:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 12:45:05,427 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-02 12:45:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:05,428 INFO L225 Difference]: With dead ends: 60 [2021-05-02 12:45:05,428 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 12:45:05,429 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 243.6ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:45:05,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 12:45:05,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-05-02 12:45:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-05-02 12:45:05,437 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2021-05-02 12:45:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:05,437 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-05-02 12:45:05,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-05-02 12:45:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 12:45:05,438 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:05,438 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:05,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:05,661 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:05,662 INFO L82 PathProgramCache]: Analyzing trace with hash 354034408, now seen corresponding path program 5 times [2021-05-02 12:45:05,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:05,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156797550] [2021-05-02 12:45:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:05,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-05-02 12:45:05,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:05,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156797550] [2021-05-02 12:45:05,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156797550] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:05,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608240180] [2021-05-02 12:45:05,774 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 12:45:05,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-05-02 12:45:05,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:05,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 12:45:05,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:05,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:05,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:06,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-05-02 12:45:06,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608240180] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:06,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:06,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-05-02 12:45:06,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441406513] [2021-05-02 12:45:06,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:45:06,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:06,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:45:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:45:06,033 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 12:45:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:06,298 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2021-05-02 12:45:06,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 12:45:06,298 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 39 [2021-05-02 12:45:06,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:06,299 INFO L225 Difference]: With dead ends: 66 [2021-05-02 12:45:06,299 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 12:45:06,300 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 274.5ms TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2021-05-02 12:45:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 12:45:06,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-05-02 12:45:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2021-05-02 12:45:06,308 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 39 [2021-05-02 12:45:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:06,308 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2021-05-02 12:45:06,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 12:45:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2021-05-02 12:45:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 12:45:06,309 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:06,309 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:06,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-02 12:45:06,533 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:06,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:06,533 INFO L82 PathProgramCache]: Analyzing trace with hash 183144680, now seen corresponding path program 6 times [2021-05-02 12:45:06,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:06,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641643701] [2021-05-02 12:45:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 87 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-05-02 12:45:06,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:06,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641643701] [2021-05-02 12:45:06,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641643701] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:06,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126491449] [2021-05-02 12:45:06,653 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 12:45:06,712 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-05-02 12:45:06,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:06,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 12:45:06,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:06,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:06,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:06,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:06,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:06,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-05-02 12:45:06,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126491449] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:06,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:06,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2021-05-02 12:45:06,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149508981] [2021-05-02 12:45:06,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 12:45:06,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:06,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 12:45:06,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-05-02 12:45:06,854 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:08,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:08,021 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2021-05-02 12:45:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 12:45:08,021 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-02 12:45:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:08,022 INFO L225 Difference]: With dead ends: 107 [2021-05-02 12:45:08,022 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 12:45:08,024 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1025.4ms TimeCoverageRelationStatistics Valid=739, Invalid=1517, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 12:45:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 12:45:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 65. [2021-05-02 12:45:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-05-02 12:45:08,051 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 43 [2021-05-02 12:45:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:08,051 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-05-02 12:45:08,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-05-02 12:45:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 12:45:08,054 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:08,054 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:08,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:08,276 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:08,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:08,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1972866197, now seen corresponding path program 7 times [2021-05-02 12:45:08,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:08,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964113007] [2021-05-02 12:45:08,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 229 proven. 49 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-05-02 12:45:08,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:08,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964113007] [2021-05-02 12:45:08,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964113007] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:08,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448198818] [2021-05-02 12:45:08,401 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 12:45:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:08,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 12:45:08,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:08,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 229 proven. 49 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-05-02 12:45:08,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448198818] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:08,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:08,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-05-02 12:45:08,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443916879] [2021-05-02 12:45:08,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 12:45:08,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:08,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 12:45:08,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:45:08,693 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:08,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:08,968 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2021-05-02 12:45:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 12:45:08,968 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-05-02 12:45:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:08,971 INFO L225 Difference]: With dead ends: 115 [2021-05-02 12:45:08,971 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 12:45:08,972 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 318.3ms TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2021-05-02 12:45:08,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 12:45:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2021-05-02 12:45:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-05-02 12:45:08,992 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 64 [2021-05-02 12:45:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:08,992 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-05-02 12:45:08,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:08,992 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-05-02 12:45:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-02 12:45:08,994 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:08,995 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:09,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:09,219 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1123609737, now seen corresponding path program 8 times [2021-05-02 12:45:09,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:09,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661961179] [2021-05-02 12:45:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:09,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-05-02 12:45:09,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:09,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661961179] [2021-05-02 12:45:09,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661961179] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:09,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137258496] [2021-05-02 12:45:09,352 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 12:45:09,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:45:09,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:09,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 12:45:09,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:09,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-05-02 12:45:09,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137258496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:09,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:09,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-05-02 12:45:09,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603060790] [2021-05-02 12:45:09,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 12:45:09,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:09,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 12:45:09,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:45:09,665 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:09,943 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2021-05-02 12:45:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 12:45:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2021-05-02 12:45:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:09,945 INFO L225 Difference]: With dead ends: 125 [2021-05-02 12:45:09,945 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 12:45:09,946 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 357.0ms TimeCoverageRelationStatistics Valid=351, Invalid=641, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:45:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 12:45:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2021-05-02 12:45:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 72 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2021-05-02 12:45:09,957 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 70 [2021-05-02 12:45:09,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:09,957 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2021-05-02 12:45:09,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:09,958 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2021-05-02 12:45:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-02 12:45:09,959 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:09,959 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:10,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 12:45:10,185 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:10,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:10,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1672947929, now seen corresponding path program 9 times [2021-05-02 12:45:10,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:10,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929034724] [2021-05-02 12:45:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 365 proven. 81 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-05-02 12:45:10,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:10,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929034724] [2021-05-02 12:45:10,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929034724] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:10,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431544843] [2021-05-02 12:45:10,327 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 12:45:10,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-05-02 12:45:10,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:10,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 12:45:10,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:10,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 367 proven. 81 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-05-02 12:45:10,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431544843] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:10,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:10,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2021-05-02 12:45:10,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048713180] [2021-05-02 12:45:10,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 12:45:10,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:10,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 12:45:10,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:45:10,643 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 24 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:11,017 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2021-05-02 12:45:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:45:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2021-05-02 12:45:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:11,019 INFO L225 Difference]: With dead ends: 135 [2021-05-02 12:45:11,020 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 12:45:11,021 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 451.1ms TimeCoverageRelationStatistics Valid=435, Invalid=825, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:45:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 12:45:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2021-05-02 12:45:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 78 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:11,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2021-05-02 12:45:11,033 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 76 [2021-05-02 12:45:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:11,034 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2021-05-02 12:45:11,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 23 states have internal predecessors, (60), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:11,034 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2021-05-02 12:45:11,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-02 12:45:11,035 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:11,036 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:11,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:11,256 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:11,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1568369851, now seen corresponding path program 10 times [2021-05-02 12:45:11,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:11,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711720505] [2021-05-02 12:45:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:11,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-05-02 12:45:11,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:11,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711720505] [2021-05-02 12:45:11,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711720505] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:11,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206189531] [2021-05-02 12:45:11,408 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 12:45:11,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:45:11,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:11,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 12:45:11,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:11,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:11,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:11,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:11,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:11,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:11,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:11,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-05-02 12:45:11,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206189531] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:11,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:11,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-05-02 12:45:11,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117874495] [2021-05-02 12:45:11,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 12:45:11,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:11,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 12:45:11,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:45:11,709 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:11,914 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2021-05-02 12:45:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 12:45:11,915 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2021-05-02 12:45:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:11,916 INFO L225 Difference]: With dead ends: 133 [2021-05-02 12:45:11,916 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 12:45:11,917 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 188.1ms TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-05-02 12:45:11,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 12:45:11,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 106. [2021-05-02 12:45:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2021-05-02 12:45:11,955 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 82 [2021-05-02 12:45:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:11,956 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2021-05-02 12:45:11,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2021-05-02 12:45:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 12:45:11,965 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:11,965 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:12,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:12,167 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:12,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:12,168 INFO L82 PathProgramCache]: Analyzing trace with hash -566860216, now seen corresponding path program 11 times [2021-05-02 12:45:12,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:12,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764860970] [2021-05-02 12:45:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 12:45:12,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:12,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764860970] [2021-05-02 12:45:12,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764860970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:12,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35696078] [2021-05-02 12:45:12,356 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 12:45:12,459 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2021-05-02 12:45:12,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:12,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 12:45:12,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:12,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:12,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:12,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:12,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:12,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:12,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:12,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:12,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:12,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 12:45:12,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35696078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:12,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:12,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-05-02 12:45:12,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183179687] [2021-05-02 12:45:12,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 12:45:12,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:12,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 12:45:12,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:45:12,704 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:12,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:12,921 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2021-05-02 12:45:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 12:45:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-02 12:45:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:12,924 INFO L225 Difference]: With dead ends: 156 [2021-05-02 12:45:12,925 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 12:45:12,925 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 208.3ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:45:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 12:45:12,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 129. [2021-05-02 12:45:12,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.0483870967741935) internal successors, (130), 124 states have internal predecessors, (130), 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 12:45:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2021-05-02 12:45:12,946 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 105 [2021-05-02 12:45:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:12,946 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2021-05-02 12:45:12,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2021-05-02 12:45:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-05-02 12:45:12,948 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:12,948 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:13,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 12:45:13,149 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:13,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:13,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1210834917, now seen corresponding path program 12 times [2021-05-02 12:45:13,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:13,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646428378] [2021-05-02 12:45:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-05-02 12:45:13,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:13,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646428378] [2021-05-02 12:45:13,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646428378] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:13,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586711088] [2021-05-02 12:45:13,290 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 12:45:13,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-05-02 12:45:13,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:13,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 12:45:13,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:13,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-05-02 12:45:13,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586711088] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:13,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:13,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-05-02 12:45:13,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489912176] [2021-05-02 12:45:13,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:45:13,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:13,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:45:13,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:45:13,709 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:13,946 INFO L93 Difference]: Finished difference Result 179 states and 186 transitions. [2021-05-02 12:45:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 12:45:13,947 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2021-05-02 12:45:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:13,948 INFO L225 Difference]: With dead ends: 179 [2021-05-02 12:45:13,948 INFO L226 Difference]: Without dead ends: 174 [2021-05-02 12:45:13,949 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 241.6ms TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2021-05-02 12:45:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-05-02 12:45:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 152. [2021-05-02 12:45:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0476190476190477) internal successors, (154), 147 states have internal predecessors, (154), 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 12:45:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2021-05-02 12:45:13,966 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 128 [2021-05-02 12:45:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:13,966 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 158 transitions. [2021-05-02 12:45:13,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 158 transitions. [2021-05-02 12:45:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 12:45:13,967 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:13,968 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:14,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 12:45:14,185 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1005394520, now seen corresponding path program 13 times [2021-05-02 12:45:14,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:14,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129430373] [2021-05-02 12:45:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:14,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2021-05-02 12:45:14,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:14,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129430373] [2021-05-02 12:45:14,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129430373] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:14,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951823062] [2021-05-02 12:45:14,342 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 12:45:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:14,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 12:45:14,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:14,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2021-05-02 12:45:14,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951823062] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:14,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:14,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-05-02 12:45:14,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814933492] [2021-05-02 12:45:14,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 12:45:14,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:14,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 12:45:14,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:45:14,736 INFO L87 Difference]: Start difference. First operand 152 states and 158 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:15,009 INFO L93 Difference]: Finished difference Result 202 states and 210 transitions. [2021-05-02 12:45:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 12:45:15,010 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-02 12:45:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:15,011 INFO L225 Difference]: With dead ends: 202 [2021-05-02 12:45:15,011 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 12:45:15,012 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 256.5ms TimeCoverageRelationStatistics Valid=233, Invalid=417, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:45:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 12:45:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2021-05-02 12:45:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.0470588235294118) internal successors, (178), 170 states have internal predecessors, (178), 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 12:45:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2021-05-02 12:45:15,030 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 151 [2021-05-02 12:45:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:15,030 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 182 transitions. [2021-05-02 12:45:15,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 182 transitions. [2021-05-02 12:45:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-05-02 12:45:15,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:15,032 INFO L523 BasicCegarLoop]: trace histogram [70, 70, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:15,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 12:45:15,261 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:15,262 INFO L82 PathProgramCache]: Analyzing trace with hash -783936379, now seen corresponding path program 14 times [2021-05-02 12:45:15,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:15,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27289891] [2021-05-02 12:45:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:15,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-05-02 12:45:15,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:15,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27289891] [2021-05-02 12:45:15,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27289891] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:15,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898543928] [2021-05-02 12:45:15,463 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 12:45:15,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:45:15,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:15,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 12:45:15,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:15,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-05-02 12:45:15,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898543928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:15,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:15,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-05-02 12:45:15,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361300894] [2021-05-02 12:45:15,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 12:45:15,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:15,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 12:45:15,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:45:15,930 INFO L87 Difference]: Start difference. First operand 175 states and 182 transitions. Second operand has 20 states, 20 states have (on average 4.1) internal successors, (82), 19 states have internal predecessors, (82), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:16,238 INFO L93 Difference]: Finished difference Result 225 states and 234 transitions. [2021-05-02 12:45:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 12:45:16,239 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.1) internal successors, (82), 19 states have internal predecessors, (82), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 174 [2021-05-02 12:45:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:16,240 INFO L225 Difference]: With dead ends: 225 [2021-05-02 12:45:16,240 INFO L226 Difference]: Without dead ends: 220 [2021-05-02 12:45:16,241 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 327.3ms TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2021-05-02 12:45:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-05-02 12:45:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 198. [2021-05-02 12:45:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.0466321243523315) internal successors, (202), 193 states have internal predecessors, (202), 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 12:45:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 206 transitions. [2021-05-02 12:45:16,264 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 206 transitions. Word has length 174 [2021-05-02 12:45:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:16,264 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 206 transitions. [2021-05-02 12:45:16,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.1) internal successors, (82), 19 states have internal predecessors, (82), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 206 transitions. [2021-05-02 12:45:16,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 12:45:16,266 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:16,267 INFO L523 BasicCegarLoop]: trace histogram [80, 80, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:16,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:16,489 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1874296072, now seen corresponding path program 15 times [2021-05-02 12:45:16,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:16,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569467251] [2021-05-02 12:45:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:16,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-05-02 12:45:16,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:16,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569467251] [2021-05-02 12:45:16,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569467251] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:16,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648072973] [2021-05-02 12:45:16,670 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 12:45:16,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2021-05-02 12:45:16,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:16,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 12:45:16,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:16,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:16,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:16,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:16,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-05-02 12:45:17,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648072973] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:17,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:17,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-05-02 12:45:17,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358865373] [2021-05-02 12:45:17,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 12:45:17,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:17,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 12:45:17,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:45:17,270 INFO L87 Difference]: Start difference. First operand 198 states and 206 transitions. Second operand has 22 states, 22 states have (on average 4.181818181818182) internal successors, (92), 21 states have internal predecessors, (92), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:17,680 INFO L93 Difference]: Finished difference Result 248 states and 258 transitions. [2021-05-02 12:45:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 12:45:17,689 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.181818181818182) internal successors, (92), 21 states have internal predecessors, (92), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-02 12:45:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:17,691 INFO L225 Difference]: With dead ends: 248 [2021-05-02 12:45:17,691 INFO L226 Difference]: Without dead ends: 243 [2021-05-02 12:45:17,692 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 363.7ms TimeCoverageRelationStatistics Valid=351, Invalid=641, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:45:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-05-02 12:45:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 221. [2021-05-02 12:45:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.0462962962962963) internal successors, (226), 216 states have internal predecessors, (226), 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 12:45:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 230 transitions. [2021-05-02 12:45:17,718 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 230 transitions. Word has length 197 [2021-05-02 12:45:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:17,719 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 230 transitions. [2021-05-02 12:45:17,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.181818181818182) internal successors, (92), 21 states have internal predecessors, (92), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 230 transitions. [2021-05-02 12:45:17,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-05-02 12:45:17,721 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:17,721 INFO L523 BasicCegarLoop]: trace histogram [90, 90, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:17,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 12:45:17,937 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:17,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:17,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1191366363, now seen corresponding path program 16 times [2021-05-02 12:45:17,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:17,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293790294] [2021-05-02 12:45:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:18,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:45:18,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:18,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293790294] [2021-05-02 12:45:18,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293790294] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:18,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119647475] [2021-05-02 12:45:18,168 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 12:45:18,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:45:18,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:18,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 12:45:18,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:18,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 12:45:18,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119647475] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:18,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:18,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2021-05-02 12:45:18,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542641560] [2021-05-02 12:45:18,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 12:45:18,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:18,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 12:45:18,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:45:18,783 INFO L87 Difference]: Start difference. First operand 221 states and 230 transitions. Second operand has 24 states, 24 states have (on average 4.25) internal successors, (102), 23 states have internal predecessors, (102), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:19,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:19,207 INFO L93 Difference]: Finished difference Result 271 states and 282 transitions. [2021-05-02 12:45:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:45:19,208 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 23 states have internal predecessors, (102), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 220 [2021-05-02 12:45:19,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:19,210 INFO L225 Difference]: With dead ends: 271 [2021-05-02 12:45:19,210 INFO L226 Difference]: Without dead ends: 266 [2021-05-02 12:45:19,211 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 432.4ms TimeCoverageRelationStatistics Valid=435, Invalid=825, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:45:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-02 12:45:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 244. [2021-05-02 12:45:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.0460251046025104) internal successors, (250), 239 states have internal predecessors, (250), 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 12:45:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 254 transitions. [2021-05-02 12:45:19,236 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 254 transitions. Word has length 220 [2021-05-02 12:45:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:19,236 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 254 transitions. [2021-05-02 12:45:19,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 23 states have internal predecessors, (102), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 254 transitions. [2021-05-02 12:45:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-05-02 12:45:19,239 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:19,239 INFO L523 BasicCegarLoop]: trace histogram [100, 100, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:19,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 12:45:19,461 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1991912552, now seen corresponding path program 17 times [2021-05-02 12:45:19,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:19,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715454305] [2021-05-02 12:45:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 10917 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:45:23,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:23,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715454305] [2021-05-02 12:45:23,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715454305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:23,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542168298] [2021-05-02 12:45:23,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:45:23,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2021-05-02 12:45:23,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:23,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 107 conjunts are in the unsatisfiable core [2021-05-02 12:45:23,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:23,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:23,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 11036 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 12:45:24,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542168298] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:45:24,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-02 12:45:24,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [106] total 109 [2021-05-02 12:45:24,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874096443] [2021-05-02 12:45:24,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 12:45:24,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:24,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 12:45:24,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5268, Invalid=6504, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 12:45:24,487 INFO L87 Difference]: Start difference. First operand 244 states and 254 transitions. Second operand has 105 states, 105 states have (on average 2.276190476190476) internal successors, (239), 104 states have internal predecessors, (239), 2 states have call successors, (3), 2 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 12:45:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:26,210 INFO L93 Difference]: Finished difference Result 9784 states and 10244 transitions. [2021-05-02 12:45:26,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 12:45:26,211 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.276190476190476) internal successors, (239), 104 states have internal predecessors, (239), 2 states have call successors, (3), 2 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 243 [2021-05-02 12:45:26,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:26,212 INFO L225 Difference]: With dead ends: 9784 [2021-05-02 12:45:26,212 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 12:45:26,233 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 4021.0ms TimeCoverageRelationStatistics Valid=5274, Invalid=6716, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 12:45:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 12:45:26,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 12:45:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 12:45:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 12:45:26,234 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 243 [2021-05-02 12:45:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:26,235 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 12:45:26,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.276190476190476) internal successors, (239), 104 states have internal predecessors, (239), 2 states have call successors, (3), 2 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 12:45:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 12:45:26,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 12:45:26,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:26,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 12:45:29,527 WARN L205 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 696 DAG size of output: 687 [2021-05-02 12:47:42,928 WARN L205 SmtUtils]: Spent 2.22 m on a formula simplification. DAG size of input: 5197 DAG size of output: 2195 [2021-05-02 12:47:49,823 WARN L205 SmtUtils]: Spent 6.84 s on a formula simplification. DAG size of input: 679 DAG size of output: 59 [2021-05-02 12:49:18,350 WARN L205 SmtUtils]: Spent 1.47 m on a formula simplification. DAG size of input: 2175 DAG size of output: 363 [2021-05-02 12:49:18,360 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-02 12:49:18,361 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-02 12:49:18,361 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-02 12:49:18,361 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:49:18,361 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-02 12:49:18,361 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:49:18,361 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:49:18,361 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 12:49:18,361 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 12:49:18,361 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:49:18,361 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-02 12:49:18,362 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:49:18,362 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:49:18,362 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:49:18,362 INFO L198 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-05-02 12:49:18,362 INFO L198 CegarLoopUtils]: For program point L31-2(lines 31 35) no Hoare annotation was computed. [2021-05-02 12:49:18,364 INFO L194 CegarLoopUtils]: At program point L31-3(lines 31 35) the Hoare annotation is: (let ((.cse0 (<= 10 main_~n~0)) (.cse1 (<= 10 main_~m~0))) (or (and .cse0 (<= main_~i~0 2) .cse1 (<= 20 main_~k~0)) (and .cse0 (<= main_~i~0 5) .cse1 (<= 50 main_~k~0)) (and .cse0 (= main_~i~0 0) (<= 0 main_~k~0) .cse1) (and .cse0 .cse1 (<= main_~i~0 3) (<= 30 main_~k~0)) (and (<= main_~i~0 4) .cse0 (<= 40 main_~k~0) .cse1) (and (<= 70 main_~k~0) .cse0 (<= main_~i~0 7) .cse1) (and .cse0 (<= 100 main_~k~0) .cse1) (and .cse0 (<= main_~i~0 8) .cse1 (<= 80 main_~k~0)) (and (<= 10 main_~k~0) .cse0 .cse1 (<= main_~i~0 1)) (and (<= 60 main_~k~0) (<= main_~i~0 6) .cse0 .cse1) (and .cse0 (<= 90 main_~k~0) .cse1 (<= main_~i~0 9)))) [2021-05-02 12:49:18,364 INFO L194 CegarLoopUtils]: At program point L31-4(lines 31 35) the Hoare annotation is: (and (<= 10 main_~n~0) (<= 100 main_~k~0) (<= 10 main_~m~0)) [2021-05-02 12:49:18,364 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 24 38) no Hoare annotation was computed. [2021-05-02 12:49:18,364 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 24 38) no Hoare annotation was computed. [2021-05-02 12:49:18,364 INFO L198 CegarLoopUtils]: For program point L36(line 36) no Hoare annotation was computed. [2021-05-02 12:49:18,365 INFO L198 CegarLoopUtils]: For program point L30(line 30) no Hoare annotation was computed. [2021-05-02 12:49:18,365 INFO L198 CegarLoopUtils]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2021-05-02 12:49:18,365 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-05-02 12:49:18,366 INFO L194 CegarLoopUtils]: At program point L32-3(lines 32 34) the Hoare annotation is: (let ((.cse20 (<= 60 main_~k~0)) (.cse18 (<= 30 main_~k~0)) (.cse27 (<= 40 main_~k~0)) (.cse26 (<= 20 main_~k~0)) (.cse28 (<= 10 main_~k~0)) (.cse2 (<= main_~j~0 6)) (.cse29 (<= 80 main_~k~0)) (.cse16 (<= main_~j~0 5)) (.cse24 (<= 50 main_~k~0)) (.cse25 (<= main_~i~0 1)) (.cse10 (<= main_~j~0 7)) (.cse15 (<= main_~j~0 4)) (.cse4 (<= main_~i~0 3)) (.cse19 (<= (+ main_~i~0 1) main_~n~0)) (.cse9 (<= main_~i~0 8)) (.cse30 (<= 90 main_~k~0)) (.cse0 (<= main_~i~0 7)) (.cse13 (<= main_~j~0 2)) (.cse11 (<= main_~i~0 2)) (.cse22 (<= main_~j~0 3)) (.cse14 (<= main_~j~0 8)) (.cse8 (<= main_~j~0 1)) (.cse12 (<= main_~i~0 5)) (.cse7 (= main_~i~0 0)) (.cse17 (= main_~j~0 0)) (.cse21 (<= 70 main_~k~0)) (.cse6 (<= main_~i~0 6)) (.cse23 (<= main_~i~0 4)) (.cse1 (<= 10 main_~n~0)) (.cse3 (<= 10 main_~m~0)) (.cse5 (<= main_~j~0 9))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 76 main_~k~0)) (and .cse1 (<= 39 main_~k~0) .cse3 .cse4 .cse5) (and .cse6 .cse1 .cse2 .cse3 (<= 66 main_~k~0)) (and (<= 6 main_~k~0) .cse1 .cse7 .cse2 .cse3) (and .cse8 .cse1 .cse9 .cse3 (<= 81 main_~k~0)) (and .cse10 .cse1 .cse11 .cse3 (<= 27 main_~k~0)) (and .cse1 .cse12 .cse3 (<= 59 main_~k~0) .cse5) (and .cse9 (<= 86 main_~k~0) .cse1 .cse2 .cse3) (and .cse13 .cse1 .cse12 (<= 52 main_~k~0) .cse3) (and .cse14 .cse6 .cse1 .cse3 (<= 68 main_~k~0)) (and .cse6 (<= 64 main_~k~0) .cse1 .cse15 .cse3) (and .cse9 .cse1 (<= 85 main_~k~0) .cse3 .cse16) (and .cse9 .cse1 .cse3 (<= 89 main_~k~0) .cse5) (and .cse10 (<= 77 main_~k~0) .cse0 .cse1 .cse3) (and .cse1 .cse17 .cse3 .cse4 .cse18) (and (<= 72 main_~k~0) .cse13 .cse0 .cse1 .cse3) (and .cse1 .cse19 (<= 100 main_~k~0) .cse3) (and .cse20 .cse6 .cse1 .cse17 .cse3) (and .cse10 (<= 97 main_~k~0) .cse1 .cse19 .cse3) (and .cse14 (<= 88 main_~k~0) .cse9 .cse1 .cse3) (and .cse10 .cse6 (<= 67 main_~k~0) .cse1 .cse3) (and .cse13 (<= 2 main_~k~0) .cse1 .cse7 .cse3) (and .cse21 .cse0 .cse1 .cse17 .cse3) (and .cse1 .cse0 (<= 79 main_~k~0) .cse3 .cse5) (and (<= 23 main_~k~0) .cse1 .cse11 .cse22 .cse3) (and .cse13 .cse1 (<= 32 main_~k~0) .cse3 .cse4) (and .cse14 (<= 98 main_~k~0) .cse1 .cse19 .cse3) (and .cse1 (<= 29 main_~k~0) .cse11 .cse3 .cse5) (and .cse23 .cse10 .cse1 .cse3 (<= 47 main_~k~0)) (and .cse1 .cse7 .cse22 .cse3 (<= 3 main_~k~0)) (and (<= 4 main_~k~0) .cse1 .cse7 .cse15 .cse3) (and .cse1 .cse17 .cse12 .cse3 .cse24) (and .cse14 .cse1 (<= 18 main_~k~0) .cse3 .cse25) (and .cse13 .cse9 .cse1 .cse3 (<= 82 main_~k~0)) (and .cse23 .cse1 .cse2 .cse3 (<= 46 main_~k~0)) (and .cse1 .cse2 .cse3 (<= 36 main_~k~0) .cse4) (and .cse10 .cse1 .cse12 (<= 57 main_~k~0) .cse3) (and .cse1 .cse3 (<= 19 main_~k~0) .cse25 .cse5) (and .cse9 .cse1 .cse15 .cse3 (<= 84 main_~k~0)) (and (<= 96 main_~k~0) .cse1 .cse2 .cse19 .cse3) (and .cse1 .cse11 .cse3 .cse16 (<= 25 main_~k~0)) (and .cse10 .cse1 .cse7 (<= 7 main_~k~0) .cse3) (and (<= 91 main_~k~0) .cse8 .cse1 .cse19 .cse3) (and .cse23 .cse8 .cse1 (<= 41 main_~k~0) .cse3) (and .cse20 .cse1 .cse12 .cse3) (and .cse1 .cse17 .cse11 .cse3 .cse26) (and .cse14 (<= 8 main_~k~0) .cse1 .cse7 .cse3) (and (<= 37 main_~k~0) .cse10 .cse1 .cse3 .cse4) (and .cse14 .cse1 .cse11 .cse3 (<= 28 main_~k~0)) (and (<= 26 main_~k~0) .cse1 .cse2 .cse11 .cse3) (and .cse8 .cse1 .cse3 .cse25 (<= 11 main_~k~0)) (and .cse8 .cse1 .cse11 (<= 21 main_~k~0) .cse3) (and .cse14 .cse0 .cse1 .cse3 (<= 78 main_~k~0)) (and .cse0 .cse1 .cse3 .cse16 (<= 75 main_~k~0)) (and .cse23 .cse1 .cse17 .cse27 .cse3) (and (<= 35 main_~k~0) .cse1 .cse3 .cse16 .cse4) (and .cse28 .cse1 .cse7 .cse3) (and (<= 94 main_~k~0) .cse1 .cse15 .cse19 .cse3) (and .cse23 .cse13 .cse1 (<= 42 main_~k~0) .cse3) (and (<= 15 main_~k~0) .cse1 .cse3 .cse16 .cse25) (and .cse14 .cse1 .cse12 (<= 58 main_~k~0) .cse3) (and (<= 31 main_~k~0) .cse8 .cse1 .cse3 .cse4) (and .cse1 .cse11 .cse3 .cse18) (and .cse6 .cse13 .cse1 (<= 62 main_~k~0) .cse3) (and (<= 33 main_~k~0) .cse1 .cse22 .cse3 .cse4) (and .cse1 .cse15 (<= 14 main_~k~0) .cse3 .cse25) (and (<= 95 main_~k~0) .cse1 .cse19 .cse3 .cse16) (and (<= 44 main_~k~0) .cse23 .cse1 .cse15 .cse3) (and .cse1 .cse27 .cse3 .cse4) (and .cse1 .cse3 .cse25 .cse26) (and .cse14 .cse1 .cse3 (<= 38 main_~k~0) .cse4) (and (<= 43 main_~k~0) .cse23 .cse1 .cse22 .cse3) (and (<= 1 main_~k~0) .cse8 .cse1 .cse7 .cse3) (and .cse1 .cse7 .cse16 .cse3 (<= 5 main_~k~0)) (and .cse1 (<= 13 main_~k~0) .cse22 .cse3 .cse25) (and (<= 56 main_~k~0) .cse1 .cse2 .cse12 .cse3) (and .cse1 .cse7 (<= 9 main_~k~0) .cse3 .cse5) (and .cse6 .cse1 .cse3 .cse16 (<= 65 main_~k~0)) (and .cse10 .cse1 .cse3 .cse25 (<= 17 main_~k~0)) (and (<= 93 main_~k~0) .cse1 .cse19 .cse22 .cse3) (and .cse9 .cse1 (<= 83 main_~k~0) .cse22 .cse3) (and (<= 55 main_~k~0) .cse1 .cse12 .cse3 .cse16) (and .cse13 .cse1 (<= 92 main_~k~0) .cse19 .cse3) (and .cse9 .cse1 .cse17 .cse3 .cse29) (and .cse8 .cse0 .cse1 (<= 71 main_~k~0) .cse3) (and .cse28 .cse1 .cse17 .cse3 .cse25) (and .cse1 .cse2 (<= 16 main_~k~0) .cse3 .cse25) (and .cse0 .cse1 .cse3 .cse29) (and .cse6 .cse1 .cse22 .cse3 (<= 63 main_~k~0)) (and .cse23 .cse1 .cse3 .cse16 (<= 45 main_~k~0)) (and .cse23 .cse1 .cse3 .cse24) (and .cse13 .cse1 (<= 12 main_~k~0) .cse3 .cse25) (and .cse1 .cse12 .cse15 (<= 54 main_~k~0) .cse3) (and .cse1 .cse15 .cse11 .cse3 (<= 24 main_~k~0)) (and .cse1 .cse0 .cse15 (<= 74 main_~k~0) .cse3) (and .cse10 .cse9 .cse1 (<= 87 main_~k~0) .cse3) (and .cse1 .cse15 .cse3 (<= 34 main_~k~0) .cse4) (and .cse1 .cse19 .cse3 .cse5 (<= 99 main_~k~0)) (and .cse6 .cse8 .cse1 .cse3 (<= 61 main_~k~0)) (and .cse1 .cse17 .cse30 .cse19 .cse3) (and .cse9 .cse1 .cse30 .cse3) (and .cse0 .cse1 .cse22 .cse3 (<= 73 main_~k~0)) (and .cse13 .cse1 .cse11 .cse3 (<= 22 main_~k~0)) (and .cse1 .cse12 .cse22 .cse3 (<= 53 main_~k~0)) (and .cse6 (<= 69 main_~k~0) .cse1 .cse3 .cse5) (and .cse23 .cse14 .cse1 (<= 48 main_~k~0) .cse3) (and (<= 51 main_~k~0) .cse8 .cse1 .cse12 .cse3) (and .cse1 .cse7 (<= 0 main_~k~0) .cse17 .cse3) (and .cse21 .cse6 .cse1 .cse3) (and .cse23 (<= 49 main_~k~0) .cse1 .cse3 .cse5))) [2021-05-02 12:49:18,366 INFO L198 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-05-02 12:49:18,366 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-02 12:49:18,366 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-05-02 12:49:18,366 INFO L198 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-05-02 12:49:18,367 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-05-02 12:49:18,367 INFO L198 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-05-02 12:49:18,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 12:49:18 BoogieIcfgContainer [2021-05-02 12:49:18,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 12:49:18,429 INFO L168 Benchmark]: Toolchain (without parser) took 257912.93 ms. Allocated memory was 203.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 167.6 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.2 GB. Max. memory is 8.0 GB. [2021-05-02 12:49:18,429 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 203.4 MB. Free memory is still 184.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 12:49:18,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.92 ms. Allocated memory is still 203.4 MB. Free memory was 167.4 MB in the beginning and 157.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 12:49:18,429 INFO L168 Benchmark]: Boogie Preprocessor took 97.58 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 186.5 MB in the end (delta: -28.8 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2021-05-02 12:49:18,430 INFO L168 Benchmark]: RCFGBuilder took 361.24 ms. Allocated memory is still 203.4 MB. Free memory was 186.5 MB in the beginning and 170.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 12:49:18,430 INFO L168 Benchmark]: TraceAbstraction took 257243.02 ms. Allocated memory was 203.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 170.3 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. [2021-05-02 12:49:18,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 203.4 MB. Free memory is still 184.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 198.92 ms. Allocated memory is still 203.4 MB. Free memory was 167.4 MB in the beginning and 157.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.58 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 186.5 MB in the end (delta: -28.8 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 361.24 ms. Allocated memory is still 203.4 MB. Free memory was 186.5 MB in the beginning and 170.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 257243.02 ms. Allocated memory was 203.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 170.3 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25220.6ms, OverallIterations: 19, TraceHistogramMax: 100, EmptinessCheckTime: 47.0ms, AutomataDifference: 7827.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 231910.4ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 640 SDtfs, 1658 SDslu, 1997 SDs, 0 SdLazy, 2069 SolverSat, 433 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1476.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2134 GetRequests, 1625 SyntacticMatches, 0 SemanticMatches, 509 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3434 ImplicationChecksByTransitivity, 9867.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=18, InterpolantAutomatonStates: 320, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 300.1ms AutomataMinimizationTime, 19 MinimizatonAttempts, 206 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 26 PreInvPairs, 5143 NumberOfFragments, 1933 HoareAnnotationTreeSize, 26 FomulaSimplifications, 22645780 FormulaSimplificationTreeSizeReduction, 136482.2ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 568980 FormulaSimplificationTreeSizeReductionInter, 95394.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 363.5ms SsaConstructionTime, 1458.2ms SatisfiabilityAnalysisTime, 10779.4ms InterpolantComputationTime, 3403 NumberOfCodeBlocks, 3352 NumberOfCodeBlocksAsserted, 304 NumberOfCheckSat, 3367 ConstructedInterpolants, 0 QuantifiedInterpolants, 16137 SizeOfPredicates, 33 NumberOfNonLiveVariables, 4879 ConjunctsInSsa, 236 ConjunctsInUnsatCore, 36 InterpolantComputations, 3 PerfectInterpolantSequences, 34349/88241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((((((((10 <= n && i <= 2) && 10 <= m) && 20 <= k) || (((10 <= n && i <= 5) && 10 <= m) && 50 <= k)) || (((10 <= n && i == 0) && 0 <= k) && 10 <= m)) || (((10 <= n && 10 <= m) && i <= 3) && 30 <= k)) || (((i <= 4 && 10 <= n) && 40 <= k) && 10 <= m)) || (((70 <= k && 10 <= n) && i <= 7) && 10 <= m)) || ((10 <= n && 100 <= k) && 10 <= m)) || (((10 <= n && i <= 8) && 10 <= m) && 80 <= k)) || (((10 <= k && 10 <= n) && 10 <= m) && i <= 1)) || (((60 <= k && i <= 6) && 10 <= n) && 10 <= m)) || (((10 <= n && 90 <= k) && 10 <= m) && i <= 9) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((i <= 7 && 10 <= n) && j <= 6) && 10 <= m) && 76 <= k) || ((((10 <= n && 39 <= k) && 10 <= m) && i <= 3) && j <= 9)) || ((((i <= 6 && 10 <= n) && j <= 6) && 10 <= m) && 66 <= k)) || ((((6 <= k && 10 <= n) && i == 0) && j <= 6) && 10 <= m)) || ((((j <= 1 && 10 <= n) && i <= 8) && 10 <= m) && 81 <= k)) || ((((j <= 7 && 10 <= n) && i <= 2) && 10 <= m) && 27 <= k)) || ((((10 <= n && i <= 5) && 10 <= m) && 59 <= k) && j <= 9)) || ((((i <= 8 && 86 <= k) && 10 <= n) && j <= 6) && 10 <= m)) || ((((j <= 2 && 10 <= n) && i <= 5) && 52 <= k) && 10 <= m)) || ((((j <= 8 && i <= 6) && 10 <= n) && 10 <= m) && 68 <= k)) || ((((i <= 6 && 64 <= k) && 10 <= n) && j <= 4) && 10 <= m)) || ((((i <= 8 && 10 <= n) && 85 <= k) && 10 <= m) && j <= 5)) || ((((i <= 8 && 10 <= n) && 10 <= m) && 89 <= k) && j <= 9)) || ((((j <= 7 && 77 <= k) && i <= 7) && 10 <= n) && 10 <= m)) || ((((10 <= n && j == 0) && 10 <= m) && i <= 3) && 30 <= k)) || ((((72 <= k && j <= 2) && i <= 7) && 10 <= n) && 10 <= m)) || (((10 <= n && i + 1 <= n) && 100 <= k) && 10 <= m)) || ((((60 <= k && i <= 6) && 10 <= n) && j == 0) && 10 <= m)) || ((((j <= 7 && 97 <= k) && 10 <= n) && i + 1 <= n) && 10 <= m)) || ((((j <= 8 && 88 <= k) && i <= 8) && 10 <= n) && 10 <= m)) || ((((j <= 7 && i <= 6) && 67 <= k) && 10 <= n) && 10 <= m)) || ((((j <= 2 && 2 <= k) && 10 <= n) && i == 0) && 10 <= m)) || ((((70 <= k && i <= 7) && 10 <= n) && j == 0) && 10 <= m)) || ((((10 <= n && i <= 7) && 79 <= k) && 10 <= m) && j <= 9)) || ((((23 <= k && 10 <= n) && i <= 2) && j <= 3) && 10 <= m)) || ((((j <= 2 && 10 <= n) && 32 <= k) && 10 <= m) && i <= 3)) || ((((j <= 8 && 98 <= k) && 10 <= n) && i + 1 <= n) && 10 <= m)) || ((((10 <= n && 29 <= k) && i <= 2) && 10 <= m) && j <= 9)) || ((((i <= 4 && j <= 7) && 10 <= n) && 10 <= m) && 47 <= k)) || ((((10 <= n && i == 0) && j <= 3) && 10 <= m) && 3 <= k)) || ((((4 <= k && 10 <= n) && i == 0) && j <= 4) && 10 <= m)) || ((((10 <= n && j == 0) && i <= 5) && 10 <= m) && 50 <= k)) || ((((j <= 8 && 10 <= n) && 18 <= k) && 10 <= m) && i <= 1)) || ((((j <= 2 && i <= 8) && 10 <= n) && 10 <= m) && 82 <= k)) || ((((i <= 4 && 10 <= n) && j <= 6) && 10 <= m) && 46 <= k)) || ((((10 <= n && j <= 6) && 10 <= m) && 36 <= k) && i <= 3)) || ((((j <= 7 && 10 <= n) && i <= 5) && 57 <= k) && 10 <= m)) || ((((10 <= n && 10 <= m) && 19 <= k) && i <= 1) && j <= 9)) || ((((i <= 8 && 10 <= n) && j <= 4) && 10 <= m) && 84 <= k)) || ((((96 <= k && 10 <= n) && j <= 6) && i + 1 <= n) && 10 <= m)) || ((((10 <= n && i <= 2) && 10 <= m) && j <= 5) && 25 <= k)) || ((((j <= 7 && 10 <= n) && i == 0) && 7 <= k) && 10 <= m)) || ((((91 <= k && j <= 1) && 10 <= n) && i + 1 <= n) && 10 <= m)) || ((((i <= 4 && j <= 1) && 10 <= n) && 41 <= k) && 10 <= m)) || (((60 <= k && 10 <= n) && i <= 5) && 10 <= m)) || ((((10 <= n && j == 0) && i <= 2) && 10 <= m) && 20 <= k)) || ((((j <= 8 && 8 <= k) && 10 <= n) && i == 0) && 10 <= m)) || ((((37 <= k && j <= 7) && 10 <= n) && 10 <= m) && i <= 3)) || ((((j <= 8 && 10 <= n) && i <= 2) && 10 <= m) && 28 <= k)) || ((((26 <= k && 10 <= n) && j <= 6) && i <= 2) && 10 <= m)) || ((((j <= 1 && 10 <= n) && 10 <= m) && i <= 1) && 11 <= k)) || ((((j <= 1 && 10 <= n) && i <= 2) && 21 <= k) && 10 <= m)) || ((((j <= 8 && i <= 7) && 10 <= n) && 10 <= m) && 78 <= k)) || ((((i <= 7 && 10 <= n) && 10 <= m) && j <= 5) && 75 <= k)) || ((((i <= 4 && 10 <= n) && j == 0) && 40 <= k) && 10 <= m)) || ((((35 <= k && 10 <= n) && 10 <= m) && j <= 5) && i <= 3)) || (((10 <= k && 10 <= n) && i == 0) && 10 <= m)) || ((((94 <= k && 10 <= n) && j <= 4) && i + 1 <= n) && 10 <= m)) || ((((i <= 4 && j <= 2) && 10 <= n) && 42 <= k) && 10 <= m)) || ((((15 <= k && 10 <= n) && 10 <= m) && j <= 5) && i <= 1)) || ((((j <= 8 && 10 <= n) && i <= 5) && 58 <= k) && 10 <= m)) || ((((31 <= k && j <= 1) && 10 <= n) && 10 <= m) && i <= 3)) || (((10 <= n && i <= 2) && 10 <= m) && 30 <= k)) || ((((i <= 6 && j <= 2) && 10 <= n) && 62 <= k) && 10 <= m)) || ((((33 <= k && 10 <= n) && j <= 3) && 10 <= m) && i <= 3)) || ((((10 <= n && j <= 4) && 14 <= k) && 10 <= m) && i <= 1)) || ((((95 <= k && 10 <= n) && i + 1 <= n) && 10 <= m) && j <= 5)) || ((((44 <= k && i <= 4) && 10 <= n) && j <= 4) && 10 <= m)) || (((10 <= n && 40 <= k) && 10 <= m) && i <= 3)) || (((10 <= n && 10 <= m) && i <= 1) && 20 <= k)) || ((((j <= 8 && 10 <= n) && 10 <= m) && 38 <= k) && i <= 3)) || ((((43 <= k && i <= 4) && 10 <= n) && j <= 3) && 10 <= m)) || ((((1 <= k && j <= 1) && 10 <= n) && i == 0) && 10 <= m)) || ((((10 <= n && i == 0) && j <= 5) && 10 <= m) && 5 <= k)) || ((((10 <= n && 13 <= k) && j <= 3) && 10 <= m) && i <= 1)) || ((((56 <= k && 10 <= n) && j <= 6) && i <= 5) && 10 <= m)) || ((((10 <= n && i == 0) && 9 <= k) && 10 <= m) && j <= 9)) || ((((i <= 6 && 10 <= n) && 10 <= m) && j <= 5) && 65 <= k)) || ((((j <= 7 && 10 <= n) && 10 <= m) && i <= 1) && 17 <= k)) || ((((93 <= k && 10 <= n) && i + 1 <= n) && j <= 3) && 10 <= m)) || ((((i <= 8 && 10 <= n) && 83 <= k) && j <= 3) && 10 <= m)) || ((((55 <= k && 10 <= n) && i <= 5) && 10 <= m) && j <= 5)) || ((((j <= 2 && 10 <= n) && 92 <= k) && i + 1 <= n) && 10 <= m)) || ((((i <= 8 && 10 <= n) && j == 0) && 10 <= m) && 80 <= k)) || ((((j <= 1 && i <= 7) && 10 <= n) && 71 <= k) && 10 <= m)) || ((((10 <= k && 10 <= n) && j == 0) && 10 <= m) && i <= 1)) || ((((10 <= n && j <= 6) && 16 <= k) && 10 <= m) && i <= 1)) || (((i <= 7 && 10 <= n) && 10 <= m) && 80 <= k)) || ((((i <= 6 && 10 <= n) && j <= 3) && 10 <= m) && 63 <= k)) || ((((i <= 4 && 10 <= n) && 10 <= m) && j <= 5) && 45 <= k)) || (((i <= 4 && 10 <= n) && 10 <= m) && 50 <= k)) || ((((j <= 2 && 10 <= n) && 12 <= k) && 10 <= m) && i <= 1)) || ((((10 <= n && i <= 5) && j <= 4) && 54 <= k) && 10 <= m)) || ((((10 <= n && j <= 4) && i <= 2) && 10 <= m) && 24 <= k)) || ((((10 <= n && i <= 7) && j <= 4) && 74 <= k) && 10 <= m)) || ((((j <= 7 && i <= 8) && 10 <= n) && 87 <= k) && 10 <= m)) || ((((10 <= n && j <= 4) && 10 <= m) && 34 <= k) && i <= 3)) || ((((10 <= n && i + 1 <= n) && 10 <= m) && j <= 9) && 99 <= k)) || ((((i <= 6 && j <= 1) && 10 <= n) && 10 <= m) && 61 <= k)) || ((((10 <= n && j == 0) && 90 <= k) && i + 1 <= n) && 10 <= m)) || (((i <= 8 && 10 <= n) && 90 <= k) && 10 <= m)) || ((((i <= 7 && 10 <= n) && j <= 3) && 10 <= m) && 73 <= k)) || ((((j <= 2 && 10 <= n) && i <= 2) && 10 <= m) && 22 <= k)) || ((((10 <= n && i <= 5) && j <= 3) && 10 <= m) && 53 <= k)) || ((((i <= 6 && 69 <= k) && 10 <= n) && 10 <= m) && j <= 9)) || ((((i <= 4 && j <= 8) && 10 <= n) && 48 <= k) && 10 <= m)) || ((((51 <= k && j <= 1) && 10 <= n) && i <= 5) && 10 <= m)) || ((((10 <= n && i == 0) && 0 <= k) && j == 0) && 10 <= m)) || (((70 <= k && i <= 6) && 10 <= n) && 10 <= m)) || ((((i <= 4 && 49 <= k) && 10 <= n) && 10 <= m) && j <= 9) RESULT: Ultimate proved your program to be correct! Received shutdown request...