/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/loops/while_infinite_loop_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:21:54,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:21:54,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:21:54,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 04:21:54,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:21:54,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:21:54,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:21:54,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:21:54,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:21:54,897 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:21:54,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:21:54,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:21:54,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:21:54,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:21:54,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:21:54,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:21:54,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:21:54,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:21:54,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:21:54,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:21:54,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:21:54,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:21:54,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:21:54,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:21:54,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:21:54,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:21:54,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:21:54,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:21:54,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:21:54,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:21:54,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:21:55,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:21:55,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:21:55,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:21:55,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:21:55,349 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:21:55,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_4.c [2020-12-22 04:21:55,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5c79141d/c52a50f93ddd437ab3e8a9be75713ddb/FLAG0ef82de50 [2020-12-22 04:21:56,040 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:21:56,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_4.c [2020-12-22 04:21:56,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5c79141d/c52a50f93ddd437ab3e8a9be75713ddb/FLAG0ef82de50 [2020-12-22 04:21:56,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5c79141d/c52a50f93ddd437ab3e8a9be75713ddb [2020-12-22 04:21:56,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:21:56,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:21:56,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:21:56,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:21:56,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:21:56,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d075306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56, skipping insertion in model container [2020-12-22 04:21:56,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:21:56,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:21:56,765 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/loops/while_infinite_loop_4.c[333,346] [2020-12-22 04:21:56,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:21:56,797 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:21:56,813 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/loops/while_infinite_loop_4.c[333,346] [2020-12-22 04:21:56,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:21:56,834 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:21:56,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56 WrapperNode [2020-12-22 04:21:56,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:21:56,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:21:56,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:21:56,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:21:56,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:21:56,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:21:56,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:21:56,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:21:56,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (1/1) ... [2020-12-22 04:21:56,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:21:56,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:21:56,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:21:56,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:21:56,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (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 04:21:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:21:57,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:21:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:21:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:21:57,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:21:57,291 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-22 04:21:57,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:57 BoogieIcfgContainer [2020-12-22 04:21:57,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:21:57,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:21:57,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:21:57,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:21:57,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:21:56" (1/3) ... [2020-12-22 04:21:57,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7853950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:21:57, skipping insertion in model container [2020-12-22 04:21:57,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:56" (2/3) ... [2020-12-22 04:21:57,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7853950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:21:57, skipping insertion in model container [2020-12-22 04:21:57,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:57" (3/3) ... [2020-12-22 04:21:57,316 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2020-12-22 04:21:57,326 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:21:57,331 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 04:21:57,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 04:21:57,404 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:21:57,404 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:21:57,404 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:21:57,405 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:21:57,405 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:21:57,405 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:21:57,405 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:21:57,405 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:21:57,428 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-22 04:21:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:21:57,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:21:57,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:21:57,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:21:57,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:21:57,444 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2020-12-22 04:21:57,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:21:57,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030919210] [2020-12-22 04:21:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:21:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:21:57,747 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 04:21:57,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030919210] [2020-12-22 04:21:57,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:21:57,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:21:57,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670774373] [2020-12-22 04:21:57,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:21:57,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:21:57,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:21:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:21:57,779 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-12-22 04:21:57,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:21:57,799 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2020-12-22 04:21:57,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:21:57,802 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 04:21:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:21:57,815 INFO L225 Difference]: With dead ends: 22 [2020-12-22 04:21:57,816 INFO L226 Difference]: Without dead ends: 8 [2020-12-22 04:21:57,820 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 04:21:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-22 04:21:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-22 04:21:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-22 04:21:57,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-22 04:21:57,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-22 04:21:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:21:57,862 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-22 04:21:57,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:21:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-22 04:21:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:21:57,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:21:57,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:21:57,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:21:57,865 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:21:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:21:57,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2020-12-22 04:21:57,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:21:57,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290771396] [2020-12-22 04:21:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:21:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:21:57,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:21:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:21:57,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:21:58,003 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 04:21:58,003 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:21:58,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:21:58,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:21:58 BoogieIcfgContainer [2020-12-22 04:21:58,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:21:58,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:21:58,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:21:58,035 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:21:58,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:57" (3/4) ... [2020-12-22 04:21:58,038 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 04:21:58,079 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops/while_infinite_loop_4.c-witness.graphml [2020-12-22 04:21:58,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:21:58,082 INFO L168 Benchmark]: Toolchain (without parser) took 1617.86 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 118.9 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:58,083 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:21:58,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.01 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 117.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:58,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.89 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 116.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:58,085 INFO L168 Benchmark]: Boogie Preprocessor took 39.25 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 115.0 MB in the end (delta: 935.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:58,086 INFO L168 Benchmark]: RCFGBuilder took 361.88 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 103.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:58,087 INFO L168 Benchmark]: TraceAbstraction took 734.46 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 120.5 MB in the end (delta: -17.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:21:58,087 INFO L168 Benchmark]: Witness Printer took 44.63 ms. Allocated memory is still 151.0 MB. Free memory was 120.5 MB in the beginning and 118.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:58,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 369.01 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 117.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.89 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 116.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.25 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 115.0 MB in the end (delta: 935.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 361.88 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 103.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 734.46 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 120.5 MB in the end (delta: -17.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 44.63 ms. Allocated memory is still 151.0 MB. Free memory was 120.5 MB in the beginning and 118.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int x=0; VAL [x=0] [L26] COND TRUE 1 VAL [x=0] [L16] COND TRUE 1 [L17] x=1 VAL [x=1] [L6] COND TRUE !(cond) VAL [x=1] [L7] reach_error() VAL [x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...