/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/prodbin-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:39:26,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:39:26,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:39:26,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:39:26,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:39:26,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:39:26,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:39:26,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:39:26,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:39:26,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:39:26,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:39:26,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:39:26,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:39:26,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:39:26,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:39:26,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:39:26,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:39:26,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:39:26,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:39:26,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:39:26,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:39:26,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:39:26,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:39:26,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:39:26,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:39:26,931 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:39:26,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:39:26,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:39:26,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:39:26,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:39:26,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:39:26,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:39:26,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:39:26,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:39:26,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:39:26,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:39:26,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:39:26,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:39:26,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:39:26,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:39:26,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:39:26,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:39:26,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:39:26,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:39:26,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:39:26,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:39:26,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:39:27,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:39:27,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:39:27,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:39:27,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:39:27,435 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:39:27,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c [2020-12-22 05:39:27,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1647a04/fd8e63839b7a436282dfaf3b4e65cc0b/FLAG1143170f7 [2020-12-22 05:39:28,084 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:39:28,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c [2020-12-22 05:39:28,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1647a04/fd8e63839b7a436282dfaf3b4e65cc0b/FLAG1143170f7 [2020-12-22 05:39:28,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1647a04/fd8e63839b7a436282dfaf3b4e65cc0b [2020-12-22 05:39:28,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:39:28,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:39:28,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:39:28,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:39:28,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:39:28,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa4f550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28, skipping insertion in model container [2020-12-22 05:39:28,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:39:28,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:39:28,720 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/prodbin-ll_valuebound20.c[537,550] [2020-12-22 05:39:28,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:39:28,745 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:39:28,759 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/prodbin-ll_valuebound20.c[537,550] [2020-12-22 05:39:28,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:39:28,781 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:39:28,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28 WrapperNode [2020-12-22 05:39:28,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:39:28,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:39:28,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:39:28,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:39:28,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:39:28,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:39:28,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:39:28,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:39:28,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (1/1) ... [2020-12-22 05:39:28,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:39:28,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:39:28,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:39:28,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:39:28,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (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 05:39:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:39:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:39:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:39:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:39:29,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:39:29,308 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-22 05:39:29,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:39:29 BoogieIcfgContainer [2020-12-22 05:39:29,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:39:29,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:39:29,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:39:29,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:39:29,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:39:28" (1/3) ... [2020-12-22 05:39:29,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c44310d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:39:29, skipping insertion in model container [2020-12-22 05:39:29,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:39:28" (2/3) ... [2020-12-22 05:39:29,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c44310d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:39:29, skipping insertion in model container [2020-12-22 05:39:29,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:39:29" (3/3) ... [2020-12-22 05:39:29,340 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound20.c [2020-12-22 05:39:29,358 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:39:29,367 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:39:29,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:39:29,475 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:39:29,475 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:39:29,475 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:39:29,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:39:29,476 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:39:29,476 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:39:29,476 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:39:29,476 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:39:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-22 05:39:29,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:39:29,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:29,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:29,500 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:29,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:29,507 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-22 05:39:29,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:29,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79342032] [2020-12-22 05:39:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:29,823 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 05:39:29,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79342032] [2020-12-22 05:39:29,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:39:29,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:39:29,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730776245] [2020-12-22 05:39:29,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:39:29,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:29,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:39:29,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:39:29,855 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-22 05:39:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:29,877 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-12-22 05:39:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:39:29,878 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 05:39:29,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:29,890 INFO L225 Difference]: With dead ends: 43 [2020-12-22 05:39:29,891 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 05:39:29,895 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 05:39:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 05:39:29,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-22 05:39:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 05:39:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-22 05:39:29,935 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-12-22 05:39:29,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:29,936 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-22 05:39:29,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:39:29,937 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-22 05:39:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:39:29,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:29,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:29,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:39:29,939 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:29,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:29,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-22 05:39:29,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:29,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374891639] [2020-12-22 05:39:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:29,991 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:29,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081100529] [2020-12-22 05:39:29,996 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 05:39:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:30,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:39:30,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:30,210 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 05:39:30,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374891639] [2020-12-22 05:39:30,211 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:30,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081100529] [2020-12-22 05:39:30,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:39:30,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:39:30,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061109984] [2020-12-22 05:39:30,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:39:30,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:30,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:39:30,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:39:30,215 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2020-12-22 05:39:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:30,337 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-12-22 05:39:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:39:30,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 05:39:30,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:30,339 INFO L225 Difference]: With dead ends: 32 [2020-12-22 05:39:30,339 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 05:39:30,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:39:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 05:39:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2020-12-22 05:39:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 05:39:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-12-22 05:39:30,347 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2020-12-22 05:39:30,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:30,348 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-12-22 05:39:30,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:39:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-22 05:39:30,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:39:30,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:30,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:30,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:39:30,565 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:30,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:30,566 INFO L82 PathProgramCache]: Analyzing trace with hash -937526112, now seen corresponding path program 1 times [2020-12-22 05:39:30,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:30,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992036936] [2020-12-22 05:39:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:30,583 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:30,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035961341] [2020-12-22 05:39:30,584 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 05:39:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:30,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:39:30,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:30,687 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 05:39:30,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992036936] [2020-12-22 05:39:30,689 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:30,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035961341] [2020-12-22 05:39:30,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:39:30,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:39:30,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960030457] [2020-12-22 05:39:30,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:39:30,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:30,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:39:30,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:39:30,695 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-12-22 05:39:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:30,788 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-12-22 05:39:30,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:39:30,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:39:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:30,790 INFO L225 Difference]: With dead ends: 28 [2020-12-22 05:39:30,790 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 05:39:30,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:39:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 05:39:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-12-22 05:39:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:39:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-22 05:39:30,806 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-12-22 05:39:30,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:30,806 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-22 05:39:30,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:39:30,807 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-22 05:39:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:39:30,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:30,810 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:31,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:31,024 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:31,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1030171456, now seen corresponding path program 1 times [2020-12-22 05:39:31,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:31,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893730816] [2020-12-22 05:39:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:31,045 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:31,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824122664] [2020-12-22 05:39:31,046 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 05:39:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:31,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:39:31,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:31,299 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:31,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:31,348 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:39:33,402 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 05:39:33,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893730816] [2020-12-22 05:39:33,403 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:33,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824122664] [2020-12-22 05:39:33,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:39:33,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:39:33,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354189242] [2020-12-22 05:39:33,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:39:33,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:33,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:39:33,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:39:33,406 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2020-12-22 05:39:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:33,768 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-12-22 05:39:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:39:33,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-22 05:39:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:33,770 INFO L225 Difference]: With dead ends: 38 [2020-12-22 05:39:33,770 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 05:39:33,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:39:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 05:39:33,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2020-12-22 05:39:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 05:39:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-22 05:39:33,777 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2020-12-22 05:39:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:33,777 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-22 05:39:33,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:39:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-22 05:39:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:39:33,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:33,778 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:33,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:33,992 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1032018498, now seen corresponding path program 1 times [2020-12-22 05:39:33,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:33,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734685104] [2020-12-22 05:39:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:34,009 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:34,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593920311] [2020-12-22 05:39:34,010 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 [2020-12-22 05:39:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:34,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:39:34,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:34,283 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:34,300 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:39:34,314 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:34,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:39:34,461 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:39:34,488 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 05:39:34,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734685104] [2020-12-22 05:39:34,489 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:34,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593920311] [2020-12-22 05:39:34,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:39:34,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:39:34,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396158888] [2020-12-22 05:39:34,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:39:34,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:34,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:39:34,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:39:34,492 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 10 states. [2020-12-22 05:39:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:35,025 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-22 05:39:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:39:35,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-22 05:39:35,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:35,027 INFO L225 Difference]: With dead ends: 40 [2020-12-22 05:39:35,027 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 05:39:35,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:39:35,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 05:39:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-12-22 05:39:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 05:39:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-22 05:39:35,033 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2020-12-22 05:39:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:35,034 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-22 05:39:35,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:39:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-22 05:39:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:39:35,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:35,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:35,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:39:35,250 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:35,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1993537895, now seen corresponding path program 1 times [2020-12-22 05:39:35,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:35,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114392297] [2020-12-22 05:39:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:35,266 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:35,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312524897] [2020-12-22 05:39:35,267 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 05:39:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:39:35,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:39:35,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:35,859 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2020-12-22 05:39:35,869 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-22 05:39:35,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:39:35,955 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 05:39:35,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114392297] [2020-12-22 05:39:35,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:39:35,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312524897] [2020-12-22 05:39:35,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:39:35,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:39:35,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260805024] [2020-12-22 05:39:35,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:39:35,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:39:35,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:39:35,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:39:35,959 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 10 states. [2020-12-22 05:39:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:39:39,084 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-12-22 05:39:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:39:39,085 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-12-22 05:39:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:39:39,085 INFO L225 Difference]: With dead ends: 31 [2020-12-22 05:39:39,086 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 05:39:39,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:39:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 05:39:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-12-22 05:39:39,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:39:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-22 05:39:39,091 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-12-22 05:39:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:39:39,091 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-22 05:39:39,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:39:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-22 05:39:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:39:39,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:39:39,092 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:39:39,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:39:39,293 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:39:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:39:39,294 INFO L82 PathProgramCache]: Analyzing trace with hash -184870151, now seen corresponding path program 2 times [2020-12-22 05:39:39,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:39:39,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099276918] [2020-12-22 05:39:39,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:39:39,319 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:39:39,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579562474] [2020-12-22 05:39:39,319 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 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 05:39:39,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:39:39,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:39:39,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 05:39:39,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:39:41,517 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (* 2 c_ULTIMATE.start_main_~a~0)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~z~0) (= c_ULTIMATE.start_main_~y~0 (div (+ c_ULTIMATE.start_main_~b~0 (- 1)) 2)) (<= 1 (mod c_ULTIMATE.start_main_~b~0 2)) (let ((.cse0 (= (+ c_ULTIMATE.start_main_~z~0 (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~b~0)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)))) (<= 1 c_ULTIMATE.start_main_~b~0)) is different from false [2020-12-22 05:39:47,801 WARN L197 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 22 [2020-12-22 05:39:55,869 WARN L197 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-22 05:40:06,139 WARN L197 SmtUtils]: Spent 10.10 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-12-22 05:40:11,549 WARN L197 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-12-22 05:40:11,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099276918] [2020-12-22 05:40:11,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:11,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579562474] [2020-12-22 05:40:11,567 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:40:11,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:11,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:40:11,567 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:40:11,567 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:40:11,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:11,788 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:40:11,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:40:11 BoogieIcfgContainer [2020-12-22 05:40:11,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:40:11,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:40:11,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:40:11,790 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:40:11,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:39:29" (3/4) ... [2020-12-22 05:40:11,793 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:40:11,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:40:11,795 INFO L168 Benchmark]: Toolchain (without parser) took 43306.33 ms. Allocated memory was 173.0 MB in the beginning and 231.7 MB in the end (delta: 58.7 MB). Free memory was 147.8 MB in the beginning and 117.5 MB in the end (delta: 30.2 MB). Peak memory consumption was 89.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:11,795 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 173.0 MB. Free memory is still 150.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:40:11,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.61 ms. Allocated memory is still 173.0 MB. Free memory was 147.6 MB in the beginning and 137.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:11,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.73 ms. Allocated memory is still 173.0 MB. Free memory was 137.8 MB in the beginning and 136.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:11,797 INFO L168 Benchmark]: Boogie Preprocessor took 27.87 ms. Allocated memory is still 173.0 MB. Free memory was 136.4 MB in the beginning and 135.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:11,798 INFO L168 Benchmark]: RCFGBuilder took 465.73 ms. Allocated memory is still 173.0 MB. Free memory was 135.2 MB in the beginning and 121.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:11,799 INFO L168 Benchmark]: TraceAbstraction took 42468.03 ms. Allocated memory was 173.0 MB in the beginning and 231.7 MB in the end (delta: 58.7 MB). Free memory was 121.5 MB in the beginning and 117.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 63.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:40:11,799 INFO L168 Benchmark]: Witness Printer took 4.20 ms. Allocated memory is still 231.7 MB. Free memory is still 117.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:40:11,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 173.0 MB. Free memory is still 150.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.61 ms. Allocated memory is still 173.0 MB. Free memory was 147.6 MB in the beginning and 137.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.73 ms. Allocated memory is still 173.0 MB. Free memory was 137.8 MB in the beginning and 136.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.87 ms. Allocated memory is still 173.0 MB. Free memory was 136.4 MB in the beginning and 135.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 465.73 ms. Allocated memory is still 173.0 MB. Free memory was 135.2 MB in the beginning and 121.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 42468.03 ms. Allocated memory was 173.0 MB in the beginning and 231.7 MB in the end (delta: 58.7 MB). Free memory was 121.5 MB in the beginning and 117.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 63.0 MB. Max. memory is 8.0 GB. * Witness Printer took 4.20 ms. Allocated memory is still 231.7 MB. Free memory is still 117.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int a, b; [L22] long long x, y, z; [L24] a = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L26] b = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L10] COND FALSE !(!cond) [L30] x = a [L31] y = b [L32] z = 0 [L34] COND TRUE 1 [L13] COND FALSE !(!(cond)) [L36] COND FALSE !(!(y != 0)) [L39] COND TRUE y % 2 == 1 [L40] z = z + x [L41] y = y - 1 [L43] x = 2 * x [L44] y = y / 2 [L34] COND TRUE 1 [L13] COND FALSE !(!(cond)) [L36] COND FALSE !(!(y != 0)) [L39] COND TRUE y % 2 == 1 [L40] z = z + x [L41] y = y - 1 [L43] x = 2 * x [L44] y = y / 2 [L34] COND TRUE 1 [L13] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 42.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 250 SDslu, 127 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, 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, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 81 ConstructedInterpolants, 1 QuantifiedInterpolants, 9213 SizeOfPredicates, 41 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/7 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...