/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/mannadiv_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:36:53,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:36:53,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:36:53,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:36:53,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:36:53,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:36:53,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:36:53,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:36:53,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:36:53,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:36:53,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:36:53,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:36:53,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:36:53,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:36:53,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:36:53,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:36:53,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:36:53,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:36:53,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:36:53,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:36:53,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:36:53,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:36:53,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:36:53,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:36:53,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:36:53,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:36:53,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:36:53,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:36:53,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:36:53,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:36:53,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:36:53,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:36:53,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:36:53,712 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:36:53,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:36:53,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:36:53,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:36:53,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:36:53,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:36:53,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:36:53,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:36:53,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:36:53,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:36:53,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:36:53,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:36:53,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:36:53,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:36:53,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:36:53,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:36:53,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:36:53,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:36:53,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:36:53,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:36:53,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:36:53,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:36:54,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:36:54,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:36:54,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:36:54,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:36:54,169 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:36:54,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2020-12-22 05:36:54,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72b74ed2/8b84327c35c34c7eb0b4f8c81c0354d0/FLAGced891e71 [2020-12-22 05:36:54,826 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:36:54,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2020-12-22 05:36:54,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72b74ed2/8b84327c35c34c7eb0b4f8c81c0354d0/FLAGced891e71 [2020-12-22 05:36:55,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72b74ed2/8b84327c35c34c7eb0b4f8c81c0354d0 [2020-12-22 05:36:55,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:36:55,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:36:55,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:36:55,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:36:55,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:36:55,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432a608e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55, skipping insertion in model container [2020-12-22 05:36:55,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:36:55,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:36:55,436 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/mannadiv_unwindbound5.c[573,586] [2020-12-22 05:36:55,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:36:55,479 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:36:55,498 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/mannadiv_unwindbound5.c[573,586] [2020-12-22 05:36:55,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:36:55,539 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:36:55,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55 WrapperNode [2020-12-22 05:36:55,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:36:55,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:36:55,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:36:55,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:36:55,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:36:55,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:36:55,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:36:55,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:36:55,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (1/1) ... [2020-12-22 05:36:55,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:36:55,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:36:55,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:36:55,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:36:55,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (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 05:36:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:36:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:36:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:36:55,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:36:56,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:36:56,152 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-22 05:36:56,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:36:56 BoogieIcfgContainer [2020-12-22 05:36:56,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:36:56,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:36:56,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:36:56,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:36:56,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:36:55" (1/3) ... [2020-12-22 05:36:56,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f4ba7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:36:56, skipping insertion in model container [2020-12-22 05:36:56,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:55" (2/3) ... [2020-12-22 05:36:56,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f4ba7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:36:56, skipping insertion in model container [2020-12-22 05:36:56,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:36:56" (3/3) ... [2020-12-22 05:36:56,164 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound5.c [2020-12-22 05:36:56,172 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:36:56,177 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:36:56,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:36:56,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:36:56,249 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:36:56,249 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:36:56,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:36:56,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:36:56,250 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:36:56,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:36:56,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:36:56,283 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-22 05:36:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:36:56,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:56,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:56,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:56,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:56,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times [2020-12-22 05:36:56,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:56,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808961929] [2020-12-22 05:36:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:56,509 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 05:36:56,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808961929] [2020-12-22 05:36:56,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:36:56,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:36:56,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126094928] [2020-12-22 05:36:56,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:36:56,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:56,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:36:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:36:56,535 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-22 05:36:56,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:56,553 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-12-22 05:36:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:36:56,555 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 05:36:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:56,564 INFO L225 Difference]: With dead ends: 39 [2020-12-22 05:36:56,564 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 05:36:56,567 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 05:36:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 05:36:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-22 05:36:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 05:36:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-22 05:36:56,601 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2020-12-22 05:36:56,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:56,601 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-22 05:36:56,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:36:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-22 05:36:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:36:56,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:56,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:56,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:36:56,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:56,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-12-22 05:36:56,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:56,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828272786] [2020-12-22 05:36:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:56,627 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:56,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807972249] [2020-12-22 05:36:56,627 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 05:36:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:56,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:36:56,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:56,883 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 05:36:56,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828272786] [2020-12-22 05:36:56,884 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:56,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807972249] [2020-12-22 05:36:56,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:36:56,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:36:56,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968657606] [2020-12-22 05:36:56,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:36:56,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:56,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:36:56,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:36:56,891 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 8 states. [2020-12-22 05:36:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:57,181 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-12-22 05:36:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:36:57,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-12-22 05:36:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:57,183 INFO L225 Difference]: With dead ends: 32 [2020-12-22 05:36:57,183 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 05:36:57,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:36:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 05:36:57,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2020-12-22 05:36:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 05:36:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-22 05:36:57,191 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2020-12-22 05:36:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:57,192 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-22 05:36:57,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:36:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-22 05:36:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:36:57,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:57,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:57,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:36:57,407 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:57,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times [2020-12-22 05:36:57,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:57,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651853422] [2020-12-22 05:36:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:57,428 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:57,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314136748] [2020-12-22 05:36:57,429 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 05:36:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:57,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 05:36:57,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:57,515 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 05:36:57,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651853422] [2020-12-22 05:36:57,516 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:57,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314136748] [2020-12-22 05:36:57,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:36:57,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:36:57,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646302386] [2020-12-22 05:36:57,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:36:57,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:57,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:36:57,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:36:57,520 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-12-22 05:36:57,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:57,540 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-12-22 05:36:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:36:57,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 05:36:57,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:57,544 INFO L225 Difference]: With dead ends: 24 [2020-12-22 05:36:57,544 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 05:36:57,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:36:57,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 05:36:57,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-22 05:36:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 05:36:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-22 05:36:57,561 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-12-22 05:36:57,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:57,562 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-22 05:36:57,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:36:57,564 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-22 05:36:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:36:57,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:57,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:57,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:57,786 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:57,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:57,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times [2020-12-22 05:36:57,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:57,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620490874] [2020-12-22 05:36:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:57,815 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:57,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529998307] [2020-12-22 05:36:57,815 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 05:36:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:57,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:36:57,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:58,091 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 05:36:58,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620490874] [2020-12-22 05:36:58,092 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:58,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529998307] [2020-12-22 05:36:58,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:36:58,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:36:58,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751499153] [2020-12-22 05:36:58,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:36:58,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:58,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:36:58,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:36:58,095 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 9 states. [2020-12-22 05:36:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:58,272 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-12-22 05:36:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:36:58,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-22 05:36:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:58,275 INFO L225 Difference]: With dead ends: 24 [2020-12-22 05:36:58,275 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 05:36:58,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:36:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 05:36:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-12-22 05:36:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 05:36:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-22 05:36:58,291 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-12-22 05:36:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:58,292 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-22 05:36:58,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:36:58,293 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-22 05:36:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:36:58,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:58,294 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:58,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:58,508 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash -132612007, now seen corresponding path program 1 times [2020-12-22 05:36:58,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:58,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747300120] [2020-12-22 05:36:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:58,530 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:58,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455147588] [2020-12-22 05:36:58,533 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 05:36:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:58,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:36:58,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:58,632 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 05:36:58,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747300120] [2020-12-22 05:36:58,633 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:58,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455147588] [2020-12-22 05:36:58,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:58,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:36:58,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846005199] [2020-12-22 05:36:58,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:36:58,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:58,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:36:58,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:36:58,635 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-12-22 05:36:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:58,663 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-12-22 05:36:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:36:58,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 05:36:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:58,665 INFO L225 Difference]: With dead ends: 26 [2020-12-22 05:36:58,665 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 05:36:58,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 05:36:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 05:36:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 05:36:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:36:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-22 05:36:58,672 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2020-12-22 05:36:58,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:58,672 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-22 05:36:58,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:36:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-22 05:36:58,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:36:58,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:58,674 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:58,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:58,888 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash -625728149, now seen corresponding path program 2 times [2020-12-22 05:36:58,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:58,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784163949] [2020-12-22 05:36:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:58,908 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:58,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940674698] [2020-12-22 05:36:58,909 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 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 05:36:58,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:36:58,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:58,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:36:58,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:59,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784163949] [2020-12-22 05:36:59,028 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:59,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940674698] [2020-12-22 05:36:59,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:59,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:36:59,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269892245] [2020-12-22 05:36:59,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:36:59,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:59,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:36:59,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:36:59,030 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-12-22 05:36:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:59,066 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-12-22 05:36:59,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:36:59,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-22 05:36:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:59,068 INFO L225 Difference]: With dead ends: 31 [2020-12-22 05:36:59,068 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 05:36:59,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:36:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 05:36:59,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-22 05:36:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 05:36:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-12-22 05:36:59,075 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-12-22 05:36:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:59,075 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-12-22 05:36:59,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:36:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-12-22 05:36:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:36:59,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:59,076 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:59,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:36:59,291 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:59,292 INFO L82 PathProgramCache]: Analyzing trace with hash 256826265, now seen corresponding path program 3 times [2020-12-22 05:36:59,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:59,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848645803] [2020-12-22 05:36:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:59,306 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:59,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011213582] [2020-12-22 05:36:59,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:36:59,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 05:36:59,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:59,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:36:59,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:59,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848645803] [2020-12-22 05:36:59,464 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:59,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011213582] [2020-12-22 05:36:59,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:59,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:36:59,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096997451] [2020-12-22 05:36:59,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:36:59,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:59,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:36:59,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:36:59,468 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 7 states. [2020-12-22 05:36:59,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:59,530 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-12-22 05:36:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:36:59,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-12-22 05:36:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:59,532 INFO L225 Difference]: With dead ends: 36 [2020-12-22 05:36:59,532 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 05:36:59,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:36:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 05:36:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 05:36:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 05:36:59,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-12-22 05:36:59,545 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 26 [2020-12-22 05:36:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:59,545 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-12-22 05:36:59,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:36:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-12-22 05:36:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:36:59,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:59,547 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:59,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:59,762 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:59,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1955278293, now seen corresponding path program 4 times [2020-12-22 05:36:59,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:59,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603873652] [2020-12-22 05:36:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:59,777 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:59,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903665409] [2020-12-22 05:36:59,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:36:59,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:36:59,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:59,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:36:59,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:59,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603873652] [2020-12-22 05:36:59,975 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:59,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903665409] [2020-12-22 05:36:59,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:59,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:36:59,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896974408] [2020-12-22 05:36:59,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:36:59,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:59,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:36:59,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:36:59,978 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-12-22 05:37:00,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:00,040 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-12-22 05:37:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:37:00,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:37:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:00,042 INFO L225 Difference]: With dead ends: 41 [2020-12-22 05:37:00,042 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:37:00,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:37:00,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:37:00,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:37:00,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:37:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-12-22 05:37:00,050 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 31 [2020-12-22 05:37:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:00,050 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-12-22 05:37:00,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:37:00,050 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-12-22 05:37:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:37:00,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:00,052 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:00,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:00,266 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:00,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1615059239, now seen corresponding path program 5 times [2020-12-22 05:37:00,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:00,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714895593] [2020-12-22 05:37:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:00,281 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:00,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610575445] [2020-12-22 05:37:00,282 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:00,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-22 05:37:00,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-22 05:37:00,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:37:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 05:37:00,369 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:37:00,437 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 05:37:00,438 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:37:00,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:37:00,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:37:00 BoogieIcfgContainer [2020-12-22 05:37:00,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:37:00,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:37:00,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:37:00,693 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:37:00,694 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:36:56" (3/4) ... [2020-12-22 05:37:00,696 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 05:37:00,776 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/mannadiv_unwindbound5.c-witness.graphml [2020-12-22 05:37:00,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:37:00,779 INFO L168 Benchmark]: Toolchain (without parser) took 5561.56 ms. Allocated memory was 175.1 MB in the beginning and 211.8 MB in the end (delta: 36.7 MB). Free memory was 150.2 MB in the beginning and 153.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:00,779 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 175.1 MB. Free memory was 148.0 MB in the beginning and 147.9 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:37:00,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.36 ms. Allocated memory is still 175.1 MB. Free memory was 149.9 MB in the beginning and 140.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:00,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.14 ms. Allocated memory is still 175.1 MB. Free memory was 140.3 MB in the beginning and 138.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:00,781 INFO L168 Benchmark]: Boogie Preprocessor took 64.12 ms. Allocated memory is still 175.1 MB. Free memory was 138.8 MB in the beginning and 137.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:00,782 INFO L168 Benchmark]: RCFGBuilder took 488.58 ms. Allocated memory is still 175.1 MB. Free memory was 137.6 MB in the beginning and 124.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:00,788 INFO L168 Benchmark]: TraceAbstraction took 4536.15 ms. Allocated memory was 175.1 MB in the beginning and 211.8 MB in the end (delta: 36.7 MB). Free memory was 124.0 MB in the beginning and 156.7 MB in the end (delta: -32.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:00,788 INFO L168 Benchmark]: Witness Printer took 83.99 ms. Allocated memory is still 211.8 MB. Free memory was 156.7 MB in the beginning and 153.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:00,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 175.1 MB. Free memory was 148.0 MB in the beginning and 147.9 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.36 ms. Allocated memory is still 175.1 MB. Free memory was 149.9 MB in the beginning and 140.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.14 ms. Allocated memory is still 175.1 MB. Free memory was 140.3 MB in the beginning and 138.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.12 ms. Allocated memory is still 175.1 MB. Free memory was 138.8 MB in the beginning and 137.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 488.58 ms. Allocated memory is still 175.1 MB. Free memory was 137.6 MB in the beginning and 124.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4536.15 ms. Allocated memory was 175.1 MB in the beginning and 211.8 MB in the end (delta: 36.7 MB). Free memory was 124.0 MB in the beginning and 156.7 MB in the end (delta: -32.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. * Witness Printer took 83.99 ms. Allocated memory is still 211.8 MB. Free memory was 156.7 MB in the beginning and 153.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) VAL [counter=0] [L13] COND FALSE !(!cond) VAL [counter=0] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND FALSE !(counter++<5) [L16] COND TRUE !(cond) VAL [counter=6] [L18] reach_error() VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 149 SDslu, 226 SDs, 0 SdLazy, 140 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=8, 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, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 8220 SizeOfPredicates, 30 NumberOfNonLiveVariables, 680 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 0/70 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...