/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/nla-digbench-scaling/geo3-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:23:28,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:23:28,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:23:28,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 15:23:28,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:23:28,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:23:28,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:23:28,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:23:28,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:23:28,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:23:28,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:23:28,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:23:28,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:23:28,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:23:28,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:23:28,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:23:28,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 15:23:28,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:23:28,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:23:28,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:23:28,854 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 15:23:28,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:23:28,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:23:28,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:23:28,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:23:28,916 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:23:28,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:23:28,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:23:28,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:23:28,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:23:28,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:23:28,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:23:28,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:23:28,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:23:28,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:23:28,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:23:28,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:23:28,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:23:28,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:23:28,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:23:28,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:23:28,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:23:28,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:23:28,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:23:28,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:23:28,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:23:28,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:23:28,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:23:28,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:23:28,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:23:29,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:23:29,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:23:29,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:23:29,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:23:29,193 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:23:29,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound100.c [2021-05-02 15:23:29,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588cd62bc/3ff01d6133aa45098aa3266f0a5d9fde/FLAG04e31a520 [2021-05-02 15:23:29,613 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:23:29,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound100.c [2021-05-02 15:23:29,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588cd62bc/3ff01d6133aa45098aa3266f0a5d9fde/FLAG04e31a520 [2021-05-02 15:23:30,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/588cd62bc/3ff01d6133aa45098aa3266f0a5d9fde [2021-05-02 15:23:30,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:23:30,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:23:30,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:23:30,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:23:30,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:23:30,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:23:30" (1/1) ... [2021-05-02 15:23:30,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0c4a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30, skipping insertion in model container [2021-05-02 15:23:30,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:23:30" (1/1) ... [2021-05-02 15:23:30,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:23:30,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:23:30,149 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound100.c[525,538] [2021-05-02 15:23:30,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:23:30,168 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:23:30,182 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound100.c[525,538] [2021-05-02 15:23:30,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:23:30,212 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:23:30,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30 WrapperNode [2021-05-02 15:23:30,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:23:30,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:23:30,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:23:30,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:23:30,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30" (1/1) ... [2021-05-02 15:23:30,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30" (1/1) ... [2021-05-02 15:23:30,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30" (1/1) ... [2021-05-02 15:23:30,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30" (1/1) ... [2021-05-02 15:23:30,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30" (1/1) ... [2021-05-02 15:23:30,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30" (1/1) ... [2021-05-02 15:23:30,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30" (1/1) ... [2021-05-02 15:23:30,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:23:30,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:23:30,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:23:30,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:23:30,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30" (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 15:23:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:23:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:23:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:23:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:23:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:23:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:23:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:23:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:23:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:23:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:23:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:23:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:23:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:23:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:23:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:23:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:23:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:23:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:23:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:23:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:23:30,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:23:30,668 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 15:23:30,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:23:30 BoogieIcfgContainer [2021-05-02 15:23:30,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:23:30,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:23:30,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:23:30,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:23:30,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:23:30" (1/3) ... [2021-05-02 15:23:30,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd5d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:23:30, skipping insertion in model container [2021-05-02 15:23:30,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:23:30" (2/3) ... [2021-05-02 15:23:30,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd5d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:23:30, skipping insertion in model container [2021-05-02 15:23:30,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:23:30" (3/3) ... [2021-05-02 15:23:30,676 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound100.c [2021-05-02 15:23:30,697 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:23:30,700 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:23:30,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:23:30,755 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:23:30,755 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:23:30,755 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:23:30,755 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:23:30,755 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:23:30,756 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:23:30,756 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:23:30,756 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:23:30,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 15:23:30,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 15:23:30,777 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:23:30,778 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:23:30,778 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:23:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:23:30,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 1 times [2021-05-02 15:23:30,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:23:30,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585555252] [2021-05-02 15:23:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:23:30,888 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:23:30,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756977766] [2021-05-02 15:23:30,889 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 15:23:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:23:31,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 1 conjunts are in the unsatisfiable core [2021-05-02 15:23:31,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:23:31,065 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 15:23:31,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:23:31,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585555252] [2021-05-02 15:23:31,066 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:23:31,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756977766] [2021-05-02 15:23:31,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756977766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:23:31,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:23:31,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-02 15:23:31,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777519675] [2021-05-02 15:23:31,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-02 15:23:31,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:23:31,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-02 15:23:31,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-02 15:23:31,085 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 15:23:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:23:31,113 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-05-02 15:23:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-02 15:23:31,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2021-05-02 15:23:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:23:31,123 INFO L225 Difference]: With dead ends: 38 [2021-05-02 15:23:31,124 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 15:23:31,126 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-02 15:23:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 15:23:31,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 15:23:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 15:23:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 15:23:31,159 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-05-02 15:23:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:23:31,159 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 15:23:31,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 15:23:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 15:23:31,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 15:23:31,161 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:23:31,162 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:23:31,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-05-02 15:23:31,386 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:23:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:23:31,386 INFO L82 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 1 times [2021-05-02 15:23:31,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:23:31,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91470404] [2021-05-02 15:23:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:23:31,407 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:23:31,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544199679] [2021-05-02 15:23:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:23:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:23:31,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 15:23:31,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:23:31,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:31,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:31,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:31,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:31,580 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 15:23:31,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:23:31,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91470404] [2021-05-02 15:23:31,581 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:23:31,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544199679] [2021-05-02 15:23:31,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544199679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:23:31,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:23:31,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 15:23:31,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111396574] [2021-05-02 15:23:31,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 15:23:31,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:23:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 15:23:31,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 15:23:31,584 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 15:23:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:23:31,594 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-05-02 15:23:31,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 15:23:31,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 12 [2021-05-02 15:23:31,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:23:31,595 INFO L225 Difference]: With dead ends: 26 [2021-05-02 15:23:31,595 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 15:23:31,596 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 15:23:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 15:23:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 15:23:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 15:23:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 15:23:31,600 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-05-02 15:23:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:23:31,600 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 15:23:31,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 15:23:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 15:23:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 15:23:31,601 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:23:31,601 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:23:31,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:23:31,817 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:23:31,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:23:31,817 INFO L82 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 1 times [2021-05-02 15:23:31,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:23:31,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380370250] [2021-05-02 15:23:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:23:31,829 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:23:31,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738415564] [2021-05-02 15:23:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:23:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:23:31,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 15:23:31,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:23:31,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:31,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:31,928 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 15:23:31,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:23:31,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380370250] [2021-05-02 15:23:31,929 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:23:31,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738415564] [2021-05-02 15:23:31,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738415564] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:23:31,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:23:31,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 15:23:31,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855079205] [2021-05-02 15:23:31,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 15:23:31,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:23:31,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 15:23:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 15:23:31,931 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 15:23:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:23:31,980 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-05-02 15:23:31,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 15:23:31,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2021-05-02 15:23:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:23:31,981 INFO L225 Difference]: With dead ends: 28 [2021-05-02 15:23:31,981 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 15:23:31,981 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 15:23:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 15:23:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 15:23:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 15:23:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-02 15:23:31,987 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2021-05-02 15:23:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:23:31,988 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-02 15:23:31,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 15:23:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-02 15:23:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 15:23:31,988 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:23:31,988 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 15:23:32,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:23:32,194 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:23:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:23:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash -2089867248, now seen corresponding path program 1 times [2021-05-02 15:23:32,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:23:32,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658194742] [2021-05-02 15:23:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:23:32,209 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:23:32,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230594081] [2021-05-02 15:23:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:23:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:23:32,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 15:23:32,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:23:32,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 15:23:32,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:23:32,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658194742] [2021-05-02 15:23:32,334 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:23:32,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230594081] [2021-05-02 15:23:32,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230594081] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:23:32,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:23:32,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 15:23:32,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080797888] [2021-05-02 15:23:32,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 15:23:32,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:23:32,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 15:23:32,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 15:23:32,336 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 15:23:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:23:32,367 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-05-02 15:23:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 15:23:32,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 15:23:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:23:32,369 INFO L225 Difference]: With dead ends: 34 [2021-05-02 15:23:32,369 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 15:23:32,369 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 15:23:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 15:23:32,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 15:23:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 15:23:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-05-02 15:23:32,373 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2021-05-02 15:23:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:23:32,373 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-05-02 15:23:32,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 15:23:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-05-02 15:23:32,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 15:23:32,374 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:23:32,374 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:23:32,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:23:32,585 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:23:32,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:23:32,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2088079788, now seen corresponding path program 1 times [2021-05-02 15:23:32,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:23:32,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380111146] [2021-05-02 15:23:32,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:23:32,596 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:23:32,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263600418] [2021-05-02 15:23:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:23:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:23:32,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 15:23:32,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:23:32,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:32,767 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 15:23:32,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:23:32,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380111146] [2021-05-02 15:23:32,768 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:23:32,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263600418] [2021-05-02 15:23:32,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263600418] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:23:32,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:23:32,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 15:23:32,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472940808] [2021-05-02 15:23:32,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 15:23:32,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:23:32,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 15:23:32,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 15:23:32,770 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 15:23:38,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:23:38,891 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-05-02 15:23:38,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:23:38,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 15:23:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:23:38,892 INFO L225 Difference]: With dead ends: 36 [2021-05-02 15:23:38,893 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 15:23:38,893 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-05-02 15:23:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 15:23:38,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-05-02 15:23:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 15:23:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-05-02 15:23:38,900 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 20 [2021-05-02 15:23:38,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:23:38,900 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-05-02 15:23:38,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 15:23:38,900 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-05-02 15:23:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 15:23:38,901 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:23:38,901 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:23:39,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:23:39,113 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:23:39,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:23:39,113 INFO L82 PathProgramCache]: Analyzing trace with hash -475222577, now seen corresponding path program 1 times [2021-05-02 15:23:39,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:23:39,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329140802] [2021-05-02 15:23:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:23:39,130 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:23:39,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373000820] [2021-05-02 15:23:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:23:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:23:39,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 15:23:39,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:23:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:39,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 15:23:39,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:23:39,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329140802] [2021-05-02 15:23:39,289 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:23:39,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373000820] [2021-05-02 15:23:39,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373000820] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:23:39,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:23:39,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 15:23:39,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055664701] [2021-05-02 15:23:39,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 15:23:39,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:23:39,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 15:23:39,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 15:23:39,291 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 15:23:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:23:41,356 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-05-02 15:23:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 15:23:41,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2021-05-02 15:23:41,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:23:41,358 INFO L225 Difference]: With dead ends: 39 [2021-05-02 15:23:41,358 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 15:23:41,359 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 15:23:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 15:23:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 15:23:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 15:23:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-05-02 15:23:41,365 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 26 [2021-05-02 15:23:41,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:23:41,365 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-05-02 15:23:41,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 15:23:41,365 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-05-02 15:23:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 15:23:41,366 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:23:41,366 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:23:41,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:23:41,575 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:23:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:23:41,576 INFO L82 PathProgramCache]: Analyzing trace with hash -696181196, now seen corresponding path program 2 times [2021-05-02 15:23:41,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:23:41,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699944949] [2021-05-02 15:23:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:23:41,585 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:23:41,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668846371] [2021-05-02 15:23:41,585 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 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 15:23:41,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:23:41,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:23:41,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 15:23:41,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:23:41,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 15:23:41,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:23:41,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699944949] [2021-05-02 15:23:41,761 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:23:41,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668846371] [2021-05-02 15:23:41,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668846371] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:23:41,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:23:41,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 15:23:41,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652236735] [2021-05-02 15:23:41,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 15:23:41,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:23:41,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 15:23:41,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 15:23:41,763 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 15:23:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:23:41,817 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-05-02 15:23:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:23:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-02 15:23:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:23:41,818 INFO L225 Difference]: With dead ends: 42 [2021-05-02 15:23:41,819 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 15:23:41,819 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:23:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 15:23:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 15:23:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 15:23:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-05-02 15:23:41,825 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 28 [2021-05-02 15:23:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:23:41,825 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-05-02 15:23:41,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 15:23:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-05-02 15:23:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 15:23:41,826 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:23:41,826 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:23:42,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:23:42,037 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:23:42,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:23:42,038 INFO L82 PathProgramCache]: Analyzing trace with hash -694393736, now seen corresponding path program 2 times [2021-05-02 15:23:42,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:23:42,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463526829] [2021-05-02 15:23:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:23:42,043 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:23:42,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580928664] [2021-05-02 15:23:42,044 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 15:23:42,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:23:42,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:23:42,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 15:23:42,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:23:50,386 WARN L205 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 16 [2021-05-02 15:23:58,788 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 15:23:58,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:58,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:23:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 15:23:58,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:23:58,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463526829] [2021-05-02 15:23:58,838 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:23:58,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580928664] [2021-05-02 15:23:58,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580928664] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:23:58,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:23:58,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 15:23:58,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870427493] [2021-05-02 15:23:58,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 15:23:58,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:23:58,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 15:23:58,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=69, Unknown=2, NotChecked=0, Total=90 [2021-05-02 15:23:58,840 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 15:24:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:24:11,250 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-05-02 15:24:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 15:24:11,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-02 15:24:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:24:11,251 INFO L225 Difference]: With dead ends: 43 [2021-05-02 15:24:11,251 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 15:24:11,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 16592.2ms TimeCoverageRelationStatistics Valid=30, Invalid=100, Unknown=2, NotChecked=0, Total=132 [2021-05-02 15:24:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 15:24:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-05-02 15:24:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 29 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 15:24:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-05-02 15:24:11,257 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 28 [2021-05-02 15:24:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:24:11,257 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-05-02 15:24:11,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 15:24:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-05-02 15:24:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 15:24:11,258 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:24:11,258 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:24:11,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-05-02 15:24:11,461 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:24:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:24:11,462 INFO L82 PathProgramCache]: Analyzing trace with hash 618442840, now seen corresponding path program 3 times [2021-05-02 15:24:11,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:24:11,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51044530] [2021-05-02 15:24:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:24:11,492 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:24:11,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822613624] [2021-05-02 15:24:11,492 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 15:24:11,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 15:24:11,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:24:11,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 15:24:11,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:24:15,130 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-02 15:24:15,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:15,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:17,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:17,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:17,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:17,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:19,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:19,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:19,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:19,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:19,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:19,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:32,007 WARN L205 SmtUtils]: Spent 10.58 s on a formula simplification that was a NOOP. DAG size: 35 [2021-05-02 15:24:32,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:32,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:34,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:34,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:34,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:34,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:34,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:36,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:36,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:36,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:36,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:36,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:36,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:52,763 WARN L205 SmtUtils]: Spent 12.25 s on a formula simplification that was a NOOP. DAG size: 35 [2021-05-02 15:24:52,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:52,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:54,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:54,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:54,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:54,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:54,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:56,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:56,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:56,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:56,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:56,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:56,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:24:58,939 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~z~0_BEFORE_CALL_10 Int) (v_main_~y~0_BEFORE_CALL_8 Int) (v_main_~x~0_BEFORE_CALL_8 Int) (v_main_~a~0_BEFORE_CALL_11 Int)) (let ((.cse1 (+ v_main_~x~0_BEFORE_CALL_8 (* v_main_~a~0_BEFORE_CALL_11 (- 1))))) (and (let ((.cse0 (div .cse1 v_main_~z~0_BEFORE_CALL_10))) (= (+ (* v_main_~z~0_BEFORE_CALL_10 .cse0) v_main_~a~0_BEFORE_CALL_11) (+ (* (div v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_10) v_main_~z~0_BEFORE_CALL_10 v_main_~a~0_BEFORE_CALL_11) .cse0))) (= (mod v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_10) 0) (= (mod .cse1 v_main_~z~0_BEFORE_CALL_10) 0) (not (= v_main_~z~0_BEFORE_CALL_10 0)) (not (= (+ (* v_main_~z~0_BEFORE_CALL_10 v_main_~y~0_BEFORE_CALL_8 v_main_~a~0_BEFORE_CALL_11) v_main_~x~0_BEFORE_CALL_8) (+ (* v_main_~z~0_BEFORE_CALL_10 v_main_~x~0_BEFORE_CALL_8) v_main_~a~0_BEFORE_CALL_11)))))) is different from false [2021-05-02 15:25:00,947 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~z~0_BEFORE_CALL_10 Int) (v_main_~y~0_BEFORE_CALL_8 Int) (v_main_~x~0_BEFORE_CALL_8 Int) (v_main_~a~0_BEFORE_CALL_11 Int)) (let ((.cse1 (+ v_main_~x~0_BEFORE_CALL_8 (* v_main_~a~0_BEFORE_CALL_11 (- 1))))) (and (let ((.cse0 (div .cse1 v_main_~z~0_BEFORE_CALL_10))) (= (+ (* v_main_~z~0_BEFORE_CALL_10 .cse0) v_main_~a~0_BEFORE_CALL_11) (+ (* (div v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_10) v_main_~z~0_BEFORE_CALL_10 v_main_~a~0_BEFORE_CALL_11) .cse0))) (= (mod v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_10) 0) (= (mod .cse1 v_main_~z~0_BEFORE_CALL_10) 0) (not (= v_main_~z~0_BEFORE_CALL_10 0)) (not (= (+ (* v_main_~z~0_BEFORE_CALL_10 v_main_~y~0_BEFORE_CALL_8 v_main_~a~0_BEFORE_CALL_11) v_main_~x~0_BEFORE_CALL_8) (+ (* v_main_~z~0_BEFORE_CALL_10 v_main_~x~0_BEFORE_CALL_8) v_main_~a~0_BEFORE_CALL_11)))))) is different from true [2021-05-02 15:25:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 0 refuted. 1 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 15:25:00,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:25:00,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51044530] [2021-05-02 15:25:00,948 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:25:00,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822613624] [2021-05-02 15:25:00,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822613624] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:25:00,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:25:00,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 15:25:00,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602573596] [2021-05-02 15:25:00,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 15:25:00,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:25:00,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 15:25:00,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=51, Unknown=6, NotChecked=14, Total=90 [2021-05-02 15:25:00,950 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:25:05,029 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 37 DAG size of output: 3 [2021-05-02 15:25:13,113 WARN L205 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 43 DAG size of output: 6 [2021-05-02 15:25:58,256 WARN L205 SmtUtils]: Spent 23.51 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-05-02 15:27:06,022 WARN L205 SmtUtils]: Spent 49.16 s on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-05-02 15:27:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:27:08,026 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-05-02 15:27:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 15:27:08,148 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-05-02 15:27:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:27:08,149 INFO L225 Difference]: With dead ends: 46 [2021-05-02 15:27:08,149 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 15:27:08,149 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 134991.0ms TimeCoverageRelationStatistics Valid=46, Invalid=127, Unknown=13, NotChecked=24, Total=210 [2021-05-02 15:27:08,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 15:27:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-02 15:27:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 15:27:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-05-02 15:27:08,154 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2021-05-02 15:27:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:27:08,155 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-05-02 15:27:08,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:27:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-05-02 15:27:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 15:27:08,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:27:08,156 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:27:08,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:27:08,360 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:27:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:27:08,360 INFO L82 PathProgramCache]: Analyzing trace with hash 620230300, now seen corresponding path program 3 times [2021-05-02 15:27:08,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:27:08,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988091141] [2021-05-02 15:27:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:27:08,366 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:27:08,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082285258] [2021-05-02 15:27:08,367 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 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 15:27:08,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 15:27:08,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:27:08,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 15:27:08,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:27:11,490 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-05-02 15:27:11,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:11,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:13,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:18,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:18,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:18,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:18,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:18,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:18,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:20,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:20,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:20,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:20,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:20,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:22,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:22,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:22,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:22,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:22,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:22,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:22,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:24,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:24,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:24,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:24,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:24,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:24,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:24,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:26,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:26,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:26,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:26,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:26,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:26,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:26,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:26,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:28,598 WARN L838 $PredicateComparison]: unable to prove that (or (and (= |c___VERIFIER_assert_#in~cond| 0) (exists ((v_main_~a~0_BEFORE_CALL_15 Int) (v_main_~z~0_BEFORE_CALL_14 Int) (v_main_~x~0_BEFORE_CALL_9 Int)) (let ((.cse0 (+ (* v_main_~a~0_BEFORE_CALL_15 (- 1)) v_main_~x~0_BEFORE_CALL_9))) (let ((.cse2 (div .cse0 v_main_~z~0_BEFORE_CALL_14))) (let ((.cse1 (* v_main_~z~0_BEFORE_CALL_14 .cse2)) (.cse3 (* v_main_~a~0_BEFORE_CALL_15 v_main_~z~0_BEFORE_CALL_14))) (and (not (= v_main_~z~0_BEFORE_CALL_14 0)) (= (mod .cse0 v_main_~z~0_BEFORE_CALL_14) 0) (= (mod (+ v_main_~a~0_BEFORE_CALL_15 .cse1 (* .cse2 (- 1))) .cse3) 0) (not (= (+ (* v_main_~a~0_BEFORE_CALL_15 (div (+ v_main_~a~0_BEFORE_CALL_15 .cse1 (* (- 1) .cse2)) .cse3) v_main_~z~0_BEFORE_CALL_14 v_main_~z~0_BEFORE_CALL_14) v_main_~x~0_BEFORE_CALL_9) (+ v_main_~a~0_BEFORE_CALL_15 (* v_main_~z~0_BEFORE_CALL_14 v_main_~x~0_BEFORE_CALL_9)))) (not (= .cse3 0)))))))) (= |c___VERIFIER_assert_#in~cond| 1)) is different from false [2021-05-02 15:27:28,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:30,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:30,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:30,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:30,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:30,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:30,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:30,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:32,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:32,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:32,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:32,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:32,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:32,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:32,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:44,121 WARN L205 SmtUtils]: Spent 10.57 s on a formula simplification that was a NOOP. DAG size: 37 [2021-05-02 15:27:44,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:44,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:46,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:46,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:46,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:46,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:46,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:46,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:48,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:48,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:48,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:48,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:48,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:48,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:48,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:48,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:27:50,274 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_15 Int) (v_main_~z~0_BEFORE_CALL_14 Int) (v_main_~x~0_BEFORE_CALL_9 Int)) (let ((.cse0 (+ (* v_main_~a~0_BEFORE_CALL_15 (- 1)) v_main_~x~0_BEFORE_CALL_9))) (let ((.cse2 (div .cse0 v_main_~z~0_BEFORE_CALL_14))) (let ((.cse1 (* v_main_~z~0_BEFORE_CALL_14 .cse2)) (.cse3 (* v_main_~a~0_BEFORE_CALL_15 v_main_~z~0_BEFORE_CALL_14))) (and (not (= v_main_~z~0_BEFORE_CALL_14 0)) (= (mod .cse0 v_main_~z~0_BEFORE_CALL_14) 0) (= (mod (+ v_main_~a~0_BEFORE_CALL_15 .cse1 (* .cse2 (- 1))) .cse3) 0) (not (= (+ (* v_main_~a~0_BEFORE_CALL_15 (div (+ v_main_~a~0_BEFORE_CALL_15 .cse1 (* (- 1) .cse2)) .cse3) v_main_~z~0_BEFORE_CALL_14 v_main_~z~0_BEFORE_CALL_14) v_main_~x~0_BEFORE_CALL_9) (+ v_main_~a~0_BEFORE_CALL_15 (* v_main_~z~0_BEFORE_CALL_14 v_main_~x~0_BEFORE_CALL_9)))) (not (= .cse3 0))))))) is different from false [2021-05-02 15:27:53,912 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_15 Int) (v_main_~z~0_BEFORE_CALL_14 Int) (v_main_~x~0_BEFORE_CALL_9 Int)) (let ((.cse0 (+ (* v_main_~a~0_BEFORE_CALL_15 (- 1)) v_main_~x~0_BEFORE_CALL_9))) (let ((.cse2 (div .cse0 v_main_~z~0_BEFORE_CALL_14))) (let ((.cse1 (* v_main_~z~0_BEFORE_CALL_14 .cse2)) (.cse3 (* v_main_~a~0_BEFORE_CALL_15 v_main_~z~0_BEFORE_CALL_14))) (and (not (= v_main_~z~0_BEFORE_CALL_14 0)) (= (mod .cse0 v_main_~z~0_BEFORE_CALL_14) 0) (= (mod (+ v_main_~a~0_BEFORE_CALL_15 .cse1 (* .cse2 (- 1))) .cse3) 0) (not (= (+ (* v_main_~a~0_BEFORE_CALL_15 (div (+ v_main_~a~0_BEFORE_CALL_15 .cse1 (* (- 1) .cse2)) .cse3) v_main_~z~0_BEFORE_CALL_14 v_main_~z~0_BEFORE_CALL_14) v_main_~x~0_BEFORE_CALL_9) (+ v_main_~a~0_BEFORE_CALL_15 (* v_main_~z~0_BEFORE_CALL_14 v_main_~x~0_BEFORE_CALL_9)))) (not (= .cse3 0))))))) is different from true [2021-05-02 15:27:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 15:27:53,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:27:53,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988091141] [2021-05-02 15:27:53,913 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:27:53,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082285258] [2021-05-02 15:27:53,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082285258] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:27:53,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:27:53,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 15:27:53,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208019396] [2021-05-02 15:27:53,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 15:27:53,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:27:53,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 15:27:53,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=41, Unknown=4, NotChecked=26, Total=90 [2021-05-02 15:27:53,915 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:28:05,307 WARN L838 $PredicateComparison]: unable to prove that (and (or (= c___VERIFIER_assert_~cond 1) (and (= c___VERIFIER_assert_~cond 0) (exists ((v_main_~a~0_BEFORE_CALL_15 Int) (v_main_~z~0_BEFORE_CALL_14 Int) (v_main_~x~0_BEFORE_CALL_9 Int)) (let ((.cse0 (+ (* v_main_~a~0_BEFORE_CALL_15 (- 1)) v_main_~x~0_BEFORE_CALL_9))) (let ((.cse2 (div .cse0 v_main_~z~0_BEFORE_CALL_14))) (let ((.cse1 (* v_main_~z~0_BEFORE_CALL_14 .cse2)) (.cse3 (* v_main_~a~0_BEFORE_CALL_15 v_main_~z~0_BEFORE_CALL_14))) (and (not (= v_main_~z~0_BEFORE_CALL_14 0)) (= (mod .cse0 v_main_~z~0_BEFORE_CALL_14) 0) (= (mod (+ v_main_~a~0_BEFORE_CALL_15 .cse1 (* .cse2 (- 1))) .cse3) 0) (not (= (+ (* v_main_~a~0_BEFORE_CALL_15 (div (+ v_main_~a~0_BEFORE_CALL_15 .cse1 (* (- 1) .cse2)) .cse3) v_main_~z~0_BEFORE_CALL_14 v_main_~z~0_BEFORE_CALL_14) v_main_~x~0_BEFORE_CALL_9) (+ v_main_~a~0_BEFORE_CALL_15 (* v_main_~z~0_BEFORE_CALL_14 v_main_~x~0_BEFORE_CALL_9)))) (not (= .cse3 0))))))))) (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond)) is different from false [2021-05-02 15:28:38,718 WARN L205 SmtUtils]: Spent 29.27 s on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-05-02 15:28:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:28:40,750 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-05-02 15:28:40,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 15:28:40,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-05-02 15:28:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:28:40,752 INFO L225 Difference]: With dead ends: 39 [2021-05-02 15:28:40,752 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:28:40,752 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57599.9ms TimeCoverageRelationStatistics Valid=30, Invalid=65, Unknown=7, NotChecked=54, Total=156 [2021-05-02 15:28:40,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:28:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:28:40,753 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 15:28:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:28:40,753 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-02 15:28:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:28:40,753 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:28:40,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:28:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:28:40,754 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:28:40,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 15:28:40,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:28:46,665 WARN L205 SmtUtils]: Spent 5.65 s on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2021-05-02 15:29:41,962 WARN L205 SmtUtils]: Spent 55.29 s on a formula simplification. DAG size of input: 92 DAG size of output: 1 [2021-05-02 15:30:17,282 WARN L205 SmtUtils]: Spent 35.32 s on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-05-02 15:30:19,329 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2021-05-02 15:30:19,332 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2021-05-02 15:30:19,332 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2021-05-02 15:30:19,332 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2021-05-02 15:30:19,332 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:30:19,333 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:30:19,333 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:30:19,333 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:30:19,333 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0) [2021-05-02 15:30:19,333 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:30:19,333 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:30:19,333 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 11 13) no Hoare annotation was computed. [2021-05-02 15:30:19,333 INFO L198 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-05-02 15:30:19,333 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-05-02 15:30:19,333 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-05-02 15:30:19,333 INFO L198 CegarLoopUtils]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2021-05-02 15:30:19,333 INFO L194 CegarLoopUtils]: At program point L34-3(lines 34 43) the Hoare annotation is: (let ((.cse1 (= (* main_~z~0 main_~a~0) main_~az~0)) (.cse0 (= main_~a~0 main_~x~0))) (or (not (<= |old(~counter~0)| 0)) (and .cse0 (= main_~y~0 1) (<= ~counter~0 0) .cse1) (let ((.cse3 (= main_~z~0 0))) (let ((.cse8 (and .cse0 .cse3))) (and .cse1 (or (let ((.cse2 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (= (mod .cse2 main_~z~0) 0) (not .cse3) (let ((.cse4 (div .cse2 main_~z~0))) (let ((.cse6 (= main_~az~0 0)) (.cse5 (* main_~z~0 .cse4))) (or (and (= .cse4 (+ .cse5 main_~a~0)) .cse6) (let ((.cse7 (+ .cse5 (* .cse4 (- 1)) main_~a~0))) (and (not .cse6) (= (* (div .cse7 main_~az~0) main_~z~0) main_~y~0) (= (mod .cse7 main_~az~0) 0)))))))) .cse8) (or .cse8 (= (mod main_~y~0 main_~z~0) 0))))))) [2021-05-02 15:30:19,333 INFO L194 CegarLoopUtils]: At program point L34-4(lines 34 43) the Hoare annotation is: (or (let ((.cse1 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (let ((.cse0 (div .cse1 main_~z~0))) (= (+ (* main_~z~0 .cse0) main_~a~0) (+ (* main_~az~0 (div main_~y~0 main_~z~0)) .cse0))) (= (mod .cse1 main_~z~0) 0) (= (* main_~z~0 main_~a~0) main_~az~0) (not (= main_~z~0 0)) (= (mod main_~y~0 main_~z~0) 0))) (not (<= |old(~counter~0)| 0)) (= (+ main_~x~0 (* main_~y~0 main_~az~0)) (+ main_~a~0 (* main_~x~0 main_~z~0)))) [2021-05-02 15:30:19,333 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 22 46) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (<= ~counter~0 0)) [2021-05-02 15:30:19,334 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 22 46) no Hoare annotation was computed. [2021-05-02 15:30:19,334 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 22 46) no Hoare annotation was computed. [2021-05-02 15:30:19,334 INFO L198 CegarLoopUtils]: For program point L44(line 44) no Hoare annotation was computed. [2021-05-02 15:30:19,334 INFO L194 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (= (* main_~z~0 main_~a~0) main_~az~0)) (.cse0 (= main_~a~0 main_~x~0))) (or (not (<= |old(~counter~0)| 0)) (and (<= ~counter~0 1) .cse0 (= main_~y~0 1) .cse1) (let ((.cse3 (= main_~z~0 0))) (let ((.cse8 (and .cse0 .cse3))) (and .cse1 (or (let ((.cse2 (+ main_~x~0 (* main_~a~0 (- 1))))) (and (= (mod .cse2 main_~z~0) 0) (not .cse3) (let ((.cse4 (div .cse2 main_~z~0))) (let ((.cse6 (= main_~az~0 0)) (.cse5 (* main_~z~0 .cse4))) (or (and (= .cse4 (+ .cse5 main_~a~0)) .cse6) (let ((.cse7 (+ .cse5 (* .cse4 (- 1)) main_~a~0))) (and (not .cse6) (= (* (div .cse7 main_~az~0) main_~z~0) main_~y~0) (= (mod .cse7 main_~az~0) 0)))))))) .cse8) (or .cse8 (= (mod main_~y~0 main_~z~0) 0))))))) [2021-05-02 15:30:19,334 INFO L198 CegarLoopUtils]: For program point L35-1(lines 34 43) no Hoare annotation was computed. [2021-05-02 15:30:19,334 INFO L198 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-05-02 15:30:19,334 INFO L198 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-05-02 15:30:19,334 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-05-02 15:30:19,334 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-05-02 15:30:19,334 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-05-02 15:30:19,334 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-05-02 15:30:19,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 03:30:19 BoogieIcfgContainer [2021-05-02 15:30:19,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 15:30:19,359 INFO L168 Benchmark]: Toolchain (without parser) took 409332.60 ms. Allocated memory was 181.4 MB in the beginning and 248.5 MB in the end (delta: 67.1 MB). Free memory was 146.9 MB in the beginning and 102.6 MB in the end (delta: 44.3 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB. [2021-05-02 15:30:19,360 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 181.4 MB. Free memory was 163.6 MB in the beginning and 163.5 MB in the end (delta: 107.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 15:30:19,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.00 ms. Allocated memory is still 181.4 MB. Free memory was 146.7 MB in the beginning and 137.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 15:30:19,360 INFO L168 Benchmark]: Boogie Preprocessor took 42.87 ms. Allocated memory is still 181.4 MB. Free memory was 137.1 MB in the beginning and 135.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 15:30:19,360 INFO L168 Benchmark]: RCFGBuilder took 411.29 ms. Allocated memory is still 181.4 MB. Free memory was 135.5 MB in the beginning and 151.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-02 15:30:19,360 INFO L168 Benchmark]: TraceAbstraction took 408688.00 ms. Allocated memory was 181.4 MB in the beginning and 248.5 MB in the end (delta: 67.1 MB). Free memory was 151.4 MB in the beginning and 102.6 MB in the end (delta: 48.7 MB). Peak memory consumption was 117.3 MB. Max. memory is 8.0 GB. [2021-05-02 15:30:19,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 181.4 MB. Free memory was 163.6 MB in the beginning and 163.5 MB in the end (delta: 107.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 185.00 ms. Allocated memory is still 181.4 MB. Free memory was 146.7 MB in the beginning and 137.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.87 ms. Allocated memory is still 181.4 MB. Free memory was 137.1 MB in the beginning and 135.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 411.29 ms. Allocated memory is still 181.4 MB. Free memory was 135.5 MB in the beginning and 151.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 408688.00 ms. Allocated memory was 181.4 MB in the beginning and 248.5 MB in the end (delta: 67.1 MB). Free memory was 151.4 MB in the beginning and 102.6 MB in the end (delta: 48.7 MB). Peak memory consumption was 117.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 310206.2ms, OverallIterations: 10, TraceHistogramMax: 4, EmptinessCheckTime: 13.9ms, AutomataDifference: 194854.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 98372.9ms, InitialAbstractionConstructionTime: 13.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 172 SDtfs, 70 SDslu, 594 SDs, 0 SdLazy, 301 SolverSat, 20 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 60120.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 209355.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=8, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 62.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 19 PreInvPairs, 30 NumberOfFragments, 359 HoareAnnotationTreeSize, 19 FomulaSimplifications, 285 FormulaSimplificationTreeSizeReduction, 34.7ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 1210 FormulaSimplificationTreeSizeReductionInter, 98330.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 103.0ms SsaConstructionTime, 466.8ms SatisfiabilityAnalysisTime, 112014.7ms InterpolantComputationTime, 229 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 219 ConstructedInterpolants, 6 QuantifiedInterpolants, 1766 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1345 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 97/130 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: 34]: Loop Invariant Derived loop invariant: (!(\old(counter) <= 0) || (((a == x && y == 1) && counter <= 0) && z * a == az)) || ((z * a == az && ((((x + a * -1) % z == 0 && !(z == 0)) && (((x + a * -1) / z == z * ((x + a * -1) / z) + a && az == 0) || ((!(az == 0) && (z * ((x + a * -1) / z) + (x + a * -1) / z * -1 + a) / az * z == y) && (z * ((x + a * -1) / z) + (x + a * -1) / z * -1 + a) % az == 0))) || (a == x && z == 0))) && ((a == x && z == 0) || y % z == 0)) RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...