/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:02:17,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:02:17,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:02:17,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:02:17,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:02:17,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:02:17,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:02:17,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:02:17,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:02:17,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:02:17,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:02:17,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:02:17,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:02:17,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:02:17,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:02:17,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:02:17,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:02:17,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:02:17,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:02:17,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:02:17,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:02:17,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:02:17,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:02:17,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:02:17,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:02:17,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:02:17,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:02:17,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:02:17,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:02:17,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:02:17,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:02:17,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:02:17,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:02:17,643 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:02:17,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:02:17,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:02:17,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:02:17,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:02:17,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:02:17,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:02:17,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:02:17,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:02:17,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:02:17,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:02:17,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:02:17,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:02:17,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:02:17,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:02:17,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:02:17,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:02:17,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:02:17,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:02:17,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:02:17,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:02:17,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:02:17,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:02:17,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:02:17,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:02:17,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:02:17,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:02:17,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:02:17,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:02:17,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:02:17,970 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:02:17,971 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-17 12:02:18,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2beac5631/190dddf0fe22421990dc7dce27401a9c/FLAG44ae14df3 [2020-07-17 12:02:18,548 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:02:18,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-17 12:02:18,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2beac5631/190dddf0fe22421990dc7dce27401a9c/FLAG44ae14df3 [2020-07-17 12:02:18,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2beac5631/190dddf0fe22421990dc7dce27401a9c [2020-07-17 12:02:18,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:02:18,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:02:18,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:02:18,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:02:18,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:02:18,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:02:18" (1/1) ... [2020-07-17 12:02:18,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a906e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:18, skipping insertion in model container [2020-07-17 12:02:18,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:02:18" (1/1) ... [2020-07-17 12:02:18,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:02:18,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:02:19,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:02:19,113 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:02:19,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:02:19,153 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:02:19,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19 WrapperNode [2020-07-17 12:02:19,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:02:19,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:02:19,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:02:19,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:02:19,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19" (1/1) ... [2020-07-17 12:02:19,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19" (1/1) ... [2020-07-17 12:02:19,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19" (1/1) ... [2020-07-17 12:02:19,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19" (1/1) ... [2020-07-17 12:02:19,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19" (1/1) ... [2020-07-17 12:02:19,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19" (1/1) ... [2020-07-17 12:02:19,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19" (1/1) ... [2020-07-17 12:02:19,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:02:19,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:02:19,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:02:19,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:02:19,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19" (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 [2020-07-17 12:02:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:02:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:02:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 12:02:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-17 12:02:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-17 12:02:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-07-17 12:02:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-07-17 12:02:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-07-17 12:02:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-07-17 12:02:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-07-17 12:02:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-07-17 12:02:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:02:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:02:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 12:02:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:02:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-17 12:02:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-17 12:02:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-07-17 12:02:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-07-17 12:02:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-07-17 12:02:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-07-17 12:02:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-07-17 12:02:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-07-17 12:02:19,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:02:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:02:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:02:19,715 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:02:19,716 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 12:02:19,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:02:19 BoogieIcfgContainer [2020-07-17 12:02:19,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:02:19,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:02:19,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:02:19,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:02:19,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:02:18" (1/3) ... [2020-07-17 12:02:19,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e831536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:02:19, skipping insertion in model container [2020-07-17 12:02:19,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:19" (2/3) ... [2020-07-17 12:02:19,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e831536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:02:19, skipping insertion in model container [2020-07-17 12:02:19,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:02:19" (3/3) ... [2020-07-17 12:02:19,729 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-07-17 12:02:19,740 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:02:19,751 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:02:19,768 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:02:19,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:02:19,798 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:02:19,798 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:02:19,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:02:19,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:02:19,798 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:02:19,798 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:02:19,799 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:02:19,822 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-17 12:02:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-17 12:02:19,828 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:19,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:19,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:19,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:19,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-07-17 12:02:19,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:19,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730497262] [2020-07-17 12:02:19,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:20,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730497262] [2020-07-17 12:02:20,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:20,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:02:20,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027576521] [2020-07-17 12:02:20,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:02:20,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:20,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:02:20,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:02:20,081 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-07-17 12:02:20,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:20,256 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-07-17 12:02:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:02:20,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-17 12:02:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:20,271 INFO L225 Difference]: With dead ends: 140 [2020-07-17 12:02:20,272 INFO L226 Difference]: Without dead ends: 70 [2020-07-17 12:02:20,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:02:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-17 12:02:20,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-07-17 12:02:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-17 12:02:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-07-17 12:02:20,330 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-07-17 12:02:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:20,330 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-07-17 12:02:20,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:02:20,331 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-07-17 12:02:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 12:02:20,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:20,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:20,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:02:20,333 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:20,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:20,333 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-07-17 12:02:20,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:20,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498318064] [2020-07-17 12:02:20,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:20,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498318064] [2020-07-17 12:02:20,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:20,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:02:20,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211063057] [2020-07-17 12:02:20,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:02:20,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:20,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:02:20,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:02:20,434 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-07-17 12:02:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:20,720 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-07-17 12:02:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 12:02:20,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-17 12:02:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:20,724 INFO L225 Difference]: With dead ends: 112 [2020-07-17 12:02:20,724 INFO L226 Difference]: Without dead ends: 106 [2020-07-17 12:02:20,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:02:20,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-17 12:02:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-07-17 12:02:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-17 12:02:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-07-17 12:02:20,750 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-07-17 12:02:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:20,751 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-07-17 12:02:20,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:02:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-07-17 12:02:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-17 12:02:20,753 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:20,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:20,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:02:20,754 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:20,754 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-07-17 12:02:20,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:20,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850220868] [2020-07-17 12:02:20,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:20,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850220868] [2020-07-17 12:02:20,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:20,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 12:02:20,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435951863] [2020-07-17 12:02:20,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 12:02:20,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:20,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 12:02:20,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:02:20,861 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-07-17 12:02:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:21,121 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-07-17 12:02:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 12:02:21,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-17 12:02:21,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:21,125 INFO L225 Difference]: With dead ends: 253 [2020-07-17 12:02:21,125 INFO L226 Difference]: Without dead ends: 162 [2020-07-17 12:02:21,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:02:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-17 12:02:21,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-07-17 12:02:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-17 12:02:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-07-17 12:02:21,148 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-07-17 12:02:21,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:21,149 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-07-17 12:02:21,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 12:02:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-07-17 12:02:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 12:02:21,151 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:21,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:21,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:02:21,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:21,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-07-17 12:02:21,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:21,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907757107] [2020-07-17 12:02:21,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:21,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907757107] [2020-07-17 12:02:21,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964267693] [2020-07-17 12:02:21,267 INFO L94 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 [2020-07-17 12:02:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,319 INFO L264 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-17 12:02:21,326 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:21,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:21,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 7 [2020-07-17 12:02:21,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677508501] [2020-07-17 12:02:21,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 12:02:21,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 12:02:21,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:02:21,361 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states. [2020-07-17 12:02:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:21,658 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2020-07-17 12:02:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 12:02:21,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-07-17 12:02:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:21,663 INFO L225 Difference]: With dead ends: 350 [2020-07-17 12:02:21,667 INFO L226 Difference]: Without dead ends: 235 [2020-07-17 12:02:21,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:02:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-17 12:02:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-07-17 12:02:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-17 12:02:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2020-07-17 12:02:21,713 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40 [2020-07-17 12:02:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:21,714 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2020-07-17 12:02:21,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 12:02:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2020-07-17 12:02:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-17 12:02:21,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:21,719 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:21,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:21,930 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:21,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:21,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-07-17 12:02:21,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:21,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410861871] [2020-07-17 12:02:21,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:22,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410861871] [2020-07-17 12:02:22,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96677369] [2020-07-17 12:02:22,093 INFO L94 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 [2020-07-17 12:02:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,154 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-17 12:02:22,157 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 12:02:22,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:02:22,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2020-07-17 12:02:22,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905535612] [2020-07-17 12:02:22,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:02:22,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:22,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:02:22,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:02:22,170 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 4 states. [2020-07-17 12:02:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:22,229 INFO L93 Difference]: Finished difference Result 387 states and 569 transitions. [2020-07-17 12:02:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:02:22,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-07-17 12:02:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:22,232 INFO L225 Difference]: With dead ends: 387 [2020-07-17 12:02:22,232 INFO L226 Difference]: Without dead ends: 248 [2020-07-17 12:02:22,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:02:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-07-17 12:02:22,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 198. [2020-07-17 12:02:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-07-17 12:02:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 288 transitions. [2020-07-17 12:02:22,250 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 288 transitions. Word has length 51 [2020-07-17 12:02:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:22,250 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 288 transitions. [2020-07-17 12:02:22,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:02:22,251 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 288 transitions. [2020-07-17 12:02:22,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-17 12:02:22,253 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:22,253 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:22,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:22,468 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:22,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-07-17 12:02:22,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:22,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97258941] [2020-07-17 12:02:22,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-17 12:02:22,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97258941] [2020-07-17 12:02:22,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:22,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 12:02:22,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457387983] [2020-07-17 12:02:22,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 12:02:22,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:22,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 12:02:22,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:02:22,554 INFO L87 Difference]: Start difference. First operand 198 states and 288 transitions. Second operand 6 states. [2020-07-17 12:02:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:22,693 INFO L93 Difference]: Finished difference Result 366 states and 542 transitions. [2020-07-17 12:02:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 12:02:22,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-07-17 12:02:22,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:22,696 INFO L225 Difference]: With dead ends: 366 [2020-07-17 12:02:22,696 INFO L226 Difference]: Without dead ends: 179 [2020-07-17 12:02:22,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:02:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-17 12:02:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 110. [2020-07-17 12:02:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-17 12:02:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 149 transitions. [2020-07-17 12:02:22,709 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 149 transitions. Word has length 63 [2020-07-17 12:02:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:22,710 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 149 transitions. [2020-07-17 12:02:22,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 12:02:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 149 transitions. [2020-07-17 12:02:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-17 12:02:22,712 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:22,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:22,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 12:02:22,712 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:22,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:22,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-07-17 12:02:22,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:22,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747010927] [2020-07-17 12:02:22,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:02:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:02:22,792 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:02:22,792 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:02:22,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 12:02:22,834 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,835 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,838 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,839 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,840 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,840 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,841 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,841 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,842 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,843 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,850 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,851 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,854 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,854 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-17 12:02:22,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:02:22 BoogieIcfgContainer [2020-07-17 12:02:22,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:02:22,875 INFO L168 Benchmark]: Toolchain (without parser) took 3981.35 ms. Allocated memory was 144.2 MB in the beginning and 246.9 MB in the end (delta: 102.8 MB). Free memory was 103.5 MB in the beginning and 148.9 MB in the end (delta: -45.3 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:22,881 INFO L168 Benchmark]: CDTParser took 1.39 ms. Allocated memory is still 144.2 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:02:22,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.05 ms. Allocated memory is still 144.2 MB. Free memory was 103.1 MB in the beginning and 92.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:22,883 INFO L168 Benchmark]: Boogie Preprocessor took 129.73 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 92.9 MB in the beginning and 181.2 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:22,885 INFO L168 Benchmark]: RCFGBuilder took 436.44 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 161.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:22,885 INFO L168 Benchmark]: TraceAbstraction took 3150.07 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 160.4 MB in the beginning and 148.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:22,898 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39 ms. Allocated memory is still 144.2 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.05 ms. Allocated memory is still 144.2 MB. Free memory was 103.1 MB in the beginning and 92.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.73 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 92.9 MB in the beginning and 181.2 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.44 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 161.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3150.07 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 160.4 MB in the beginning and 148.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; VAL [\old(ldv_mutex)=5, \old(open_called)=4, ldv_mutex=1, open_called=0] [L74] int ldv_s_misc_fops_file_operations = 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L75] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L69] open_called = 0 [L70] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L75] RET my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, my_init()=0, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L81] COND TRUE ldv_s_misc_fops_file_operations==0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L82] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=1, ldv_mutex=1, open_called=0] [L82] RET misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, misc_open()=1, open_called=0] [L83] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L89] COND TRUE ldv_s_misc_fops_file_operations==1 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L90] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L52] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L90] RET misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, misc_read()=0, open_called=0] [L91] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L97] COND TRUE ldv_s_misc_fops_file_operations==2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L98] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L48] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L98] RET misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, misc_llseek()=0, open_called=0] [L99] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L106] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L34] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L41] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L41] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L42] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 416 SDtfs, 459 SDslu, 640 SDs, 0 SdLazy, 515 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 249 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 22707 SizeOfPredicates, 2 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 36/53 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...