/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:45:57,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:45:57,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:45:57,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:45:57,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:45:57,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:45:57,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:45:57,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:45:57,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:45:57,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:45:57,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:45:57,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:45:57,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:45:57,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:45:57,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:45:57,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:45:57,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:45:57,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:45:57,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:45:57,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:45:57,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:45:57,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:45:57,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:45:57,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:45:57,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:45:57,828 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:45:57,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:45:57,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:45:57,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:45:57,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:45:57,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:45:57,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:45:57,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:45:57,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:45:57,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:45:57,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:45:57,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:45:57,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:45:57,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:45:57,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:45:57,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:45:57,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:45:57,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:45:57,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:45:57,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:45:57,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:45:57,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:45:58,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:45:58,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:45:58,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:45:58,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:45:58,398 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:45:58,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound2.c [2020-12-22 05:45:58,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32687834a/e9f89ce2b0014335a027194dc2824ba3/FLAGa872c7cde [2020-12-22 05:45:59,157 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:45:59,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound2.c [2020-12-22 05:45:59,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32687834a/e9f89ce2b0014335a027194dc2824ba3/FLAGa872c7cde [2020-12-22 05:45:59,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32687834a/e9f89ce2b0014335a027194dc2824ba3 [2020-12-22 05:45:59,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:45:59,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:45:59,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:45:59,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:45:59,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:45:59,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5a59eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59, skipping insertion in model container [2020-12-22 05:45:59,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:45:59,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:45:59,735 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound2.c[458,471] [2020-12-22 05:45:59,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:45:59,767 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:45:59,784 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound2.c[458,471] [2020-12-22 05:45:59,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:45:59,812 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:45:59,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59 WrapperNode [2020-12-22 05:45:59,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:45:59,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:45:59,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:45:59,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:45:59,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:45:59,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:45:59,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:45:59,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:45:59,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (1/1) ... [2020-12-22 05:45:59,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:45:59,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:45:59,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:45:59,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:45:59,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (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 [2020-12-22 05:46:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:46:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:46:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:46:00,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:46:00,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:46:00,321 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-22 05:46:00,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:46:00 BoogieIcfgContainer [2020-12-22 05:46:00,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:46:00,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:46:00,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:46:00,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:46:00,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:45:59" (1/3) ... [2020-12-22 05:46:00,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7131083e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:46:00, skipping insertion in model container [2020-12-22 05:46:00,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:59" (2/3) ... [2020-12-22 05:46:00,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7131083e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:46:00, skipping insertion in model container [2020-12-22 05:46:00,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:46:00" (3/3) ... [2020-12-22 05:46:00,335 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound2.c [2020-12-22 05:46:00,344 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:46:00,350 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 05:46:00,396 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 05:46:00,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:46:00,429 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:46:00,430 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:46:00,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:46:00,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:46:00,430 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:46:00,430 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:46:00,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:46:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-22 05:46:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:46:00,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:46:00,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:46:00,488 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:46:00,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:46:00,499 INFO L82 PathProgramCache]: Analyzing trace with hash 120120651, now seen corresponding path program 1 times [2020-12-22 05:46:00,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:46:00,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675815234] [2020-12-22 05:46:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:46:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:46:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:46:00,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675815234] [2020-12-22 05:46:00,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:46:00,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:46:00,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475375489] [2020-12-22 05:46:00,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:46:00,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:46:00,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:46:00,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:46:00,797 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-12-22 05:46:00,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:46:00,814 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-12-22 05:46:00,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:46:00,815 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:46:00,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:46:00,825 INFO L225 Difference]: With dead ends: 41 [2020-12-22 05:46:00,825 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 05:46:00,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:46:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 05:46:00,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-22 05:46:00,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 05:46:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-22 05:46:00,869 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2020-12-22 05:46:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:46:00,870 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-22 05:46:00,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:46:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-22 05:46:00,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:46:00,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:46:00,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:46:00,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:46:00,872 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:46:00,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:46:00,873 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-22 05:46:00,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:46:00,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684629577] [2020-12-22 05:46:00,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:46:00,893 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:46:00,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405742941] [2020-12-22 05:46:00,894 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 [2020-12-22 05:46:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:46:00,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:46:00,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:46:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:46:01,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684629577] [2020-12-22 05:46:01,107 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:46:01,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405742941] [2020-12-22 05:46:01,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:46:01,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:46:01,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744269443] [2020-12-22 05:46:01,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:46:01,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:46:01,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:46:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:46:01,112 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-12-22 05:46:01,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:46:01,532 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-22 05:46:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:46:01,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-22 05:46:01,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:46:01,534 INFO L225 Difference]: With dead ends: 36 [2020-12-22 05:46:01,534 INFO L226 Difference]: Without dead ends: 25 [2020-12-22 05:46:01,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:46:01,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-22 05:46:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-12-22 05:46:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:46:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-22 05:46:01,543 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2020-12-22 05:46:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:46:01,543 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-22 05:46:01,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:46:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-22 05:46:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 05:46:01,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:46:01,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:46:01,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:46:01,759 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:46:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:46:01,760 INFO L82 PathProgramCache]: Analyzing trace with hash -938089448, now seen corresponding path program 1 times [2020-12-22 05:46:01,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:46:01,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951383247] [2020-12-22 05:46:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:46:01,778 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:46:01,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884078921] [2020-12-22 05:46:01,779 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 [2020-12-22 05:46:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:46:01,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:46:01,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:46:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:46:01,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951383247] [2020-12-22 05:46:01,968 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:46:01,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884078921] [2020-12-22 05:46:01,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:46:01,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:46:01,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64903840] [2020-12-22 05:46:01,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:46:01,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:46:01,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:46:01,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:46:01,972 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-12-22 05:46:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:46:02,444 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-12-22 05:46:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:46:02,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 05:46:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:46:02,447 INFO L225 Difference]: With dead ends: 39 [2020-12-22 05:46:02,447 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 05:46:02,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:46:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 05:46:02,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-12-22 05:46:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:46:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-12-22 05:46:02,463 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2020-12-22 05:46:02,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:46:02,465 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-12-22 05:46:02,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:46:02,466 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-12-22 05:46:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:46:02,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:46:02,468 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:46:02,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:46:02,683 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:46:02,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:46:02,685 INFO L82 PathProgramCache]: Analyzing trace with hash 687671895, now seen corresponding path program 1 times [2020-12-22 05:46:02,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:46:02,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552816003] [2020-12-22 05:46:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:46:02,702 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:46:02,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166452993] [2020-12-22 05:46:02,703 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 [2020-12-22 05:46:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:46:02,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:46:02,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:46:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:46:02,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552816003] [2020-12-22 05:46:02,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:46:02,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166452993] [2020-12-22 05:46:02,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:46:02,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:46:02,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792236100] [2020-12-22 05:46:02,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:46:02,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:46:02,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:46:02,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:46:02,882 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-12-22 05:46:02,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:46:02,927 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-22 05:46:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:46:02,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 05:46:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:46:02,929 INFO L225 Difference]: With dead ends: 34 [2020-12-22 05:46:02,930 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:46:02,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:46:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:46:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 05:46:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:46:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-22 05:46:02,937 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2020-12-22 05:46:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:46:02,938 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-22 05:46:02,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:46:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-22 05:46:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:46:02,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:46:02,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:46:03,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:46:03,156 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:46:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:46:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1290921348, now seen corresponding path program 2 times [2020-12-22 05:46:03,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:46:03,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580922427] [2020-12-22 05:46:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:46:03,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:46:03,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675356711] [2020-12-22 05:46:03,172 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 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 [2020-12-22 05:46:03,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:46:03,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:46:03,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:46:03,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:46:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:46:03,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580922427] [2020-12-22 05:46:03,368 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:46:03,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675356711] [2020-12-22 05:46:03,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:46:03,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:46:03,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829730229] [2020-12-22 05:46:03,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:46:03,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:46:03,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:46:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:46:03,371 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2020-12-22 05:46:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:46:03,407 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-12-22 05:46:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:46:03,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 05:46:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:46:03,408 INFO L225 Difference]: With dead ends: 38 [2020-12-22 05:46:03,408 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 05:46:03,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:46:03,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 05:46:03,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-22 05:46:03,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 05:46:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-22 05:46:03,415 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2020-12-22 05:46:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:46:03,415 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-22 05:46:03,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:46:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-22 05:46:03,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:46:03,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:46:03,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:46:03,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:46:03,634 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:46:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:46:03,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1329593552, now seen corresponding path program 1 times [2020-12-22 05:46:03,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:46:03,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929905111] [2020-12-22 05:46:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:46:03,649 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:46:03,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906964004] [2020-12-22 05:46:03,650 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 [2020-12-22 05:46:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:46:03,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:46:03,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:46:03,941 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:46:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:46:03,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929905111] [2020-12-22 05:46:03,960 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:46:03,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906964004] [2020-12-22 05:46:03,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:46:03,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:46:03,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481214561] [2020-12-22 05:46:03,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:46:03,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:46:03,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:46:03,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:46:03,963 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 10 states. [2020-12-22 05:46:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:46:04,321 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-12-22 05:46:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:46:04,322 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-22 05:46:04,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:46:04,323 INFO L225 Difference]: With dead ends: 28 [2020-12-22 05:46:04,323 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 05:46:04,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:46:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 05:46:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 05:46:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:46:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-12-22 05:46:04,330 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 17 [2020-12-22 05:46:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:46:04,331 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-12-22 05:46:04,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:46:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-12-22 05:46:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:46:04,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:46:04,332 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:46:04,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:46:04,545 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:46:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:46:04,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1363812488, now seen corresponding path program 1 times [2020-12-22 05:46:04,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:46:04,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629714697] [2020-12-22 05:46:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:46:04,576 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:46:04,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365612827] [2020-12-22 05:46:04,577 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 [2020-12-22 05:46:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:46:04,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:46:04,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:46:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:46:04,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629714697] [2020-12-22 05:46:04,763 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:46:04,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365612827] [2020-12-22 05:46:04,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:46:04,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:46:04,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866024011] [2020-12-22 05:46:04,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:46:04,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:46:04,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:46:04,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:46:04,766 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 7 states. [2020-12-22 05:46:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:46:04,903 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-12-22 05:46:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:46:04,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-12-22 05:46:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:46:04,905 INFO L225 Difference]: With dead ends: 22 [2020-12-22 05:46:04,905 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 05:46:04,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:46:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 05:46:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-22 05:46:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 05:46:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-12-22 05:46:04,911 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 17 [2020-12-22 05:46:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:46:04,911 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-12-22 05:46:04,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:46:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-12-22 05:46:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:46:04,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:46:04,912 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:46:05,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:46:05,127 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:46:05,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:46:05,128 INFO L82 PathProgramCache]: Analyzing trace with hash 658932075, now seen corresponding path program 2 times [2020-12-22 05:46:05,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:46:05,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007264232] [2020-12-22 05:46:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:46:05,141 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:46:05,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157713273] [2020-12-22 05:46:05,141 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 [2020-12-22 05:46:05,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:46:05,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-22 05:46:05,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:46:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 05:46:05,276 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:46:05,324 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 05:46:05,325 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:46:05,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:46:05,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:46:05 BoogieIcfgContainer [2020-12-22 05:46:05,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:46:05,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:46:05,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:46:05,594 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:46:05,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:46:00" (3/4) ... [2020-12-22 05:46:05,601 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 05:46:05,721 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/ps6-ll_unwindbound2.c-witness.graphml [2020-12-22 05:46:05,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:46:05,727 INFO L168 Benchmark]: Toolchain (without parser) took 6195.94 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 129.4 MB in the beginning and 98.2 MB in the end (delta: 31.2 MB). Peak memory consumption was 63.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:46:05,731 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:46:05,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.57 ms. Allocated memory is still 153.1 MB. Free memory was 129.2 MB in the beginning and 119.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:46:05,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.31 ms. Allocated memory is still 153.1 MB. Free memory was 119.2 MB in the beginning and 117.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:46:05,735 INFO L168 Benchmark]: Boogie Preprocessor took 36.67 ms. Allocated memory is still 153.1 MB. Free memory was 117.7 MB in the beginning and 116.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:46:05,736 INFO L168 Benchmark]: RCFGBuilder took 425.23 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 103.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:46:05,736 INFO L168 Benchmark]: TraceAbstraction took 5266.08 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 103.0 MB in the beginning and 100.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. [2020-12-22 05:46:05,740 INFO L168 Benchmark]: Witness Printer took 127.57 ms. Allocated memory is still 184.5 MB. Free memory was 100.8 MB in the beginning and 98.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:46:05,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.57 ms. Allocated memory is still 153.1 MB. Free memory was 129.2 MB in the beginning and 119.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.31 ms. Allocated memory is still 153.1 MB. Free memory was 119.2 MB in the beginning and 117.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.67 ms. Allocated memory is still 153.1 MB. Free memory was 117.7 MB in the beginning and 116.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 425.23 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 103.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5266.08 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 103.0 MB in the beginning and 100.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. * Witness Printer took 127.57 ms. Allocated memory is still 184.5 MB. Free memory was 100.8 MB in the beginning and 98.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) VAL [counter=0] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [counter=0] [L28] EXPR counter++ VAL [counter=1] [L28] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [counter=1] [L28] EXPR counter++ VAL [counter=2] [L28] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=2] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [counter=2] [L28] EXPR counter++ VAL [counter=3] [L28] COND FALSE !(counter++<2) [L10] COND FALSE !(!(cond)) VAL [counter=3] [L10] COND TRUE !(cond) VAL [counter=3] [L12] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 105 SDtfs, 172 SDslu, 183 SDs, 0 SdLazy, 183 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 7312 SizeOfPredicates, 32 NumberOfNonLiveVariables, 495 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 8/27 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...