/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -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-c90d42b [2020-09-25 14:34:38,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:34:38,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:34:38,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:34:38,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:34:38,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:34:38,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:34:38,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:34:38,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:34:38,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:34:38,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:34:38,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:34:38,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:34:38,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:34:38,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:34:38,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:34:38,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:34:38,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:34:38,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:34:38,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:34:38,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:34:38,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:34:38,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:34:38,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:34:38,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:34:38,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:34:38,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:34:38,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:34:38,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:34:38,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:34:38,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:34:38,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:34:38,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:34:38,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:34:38,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:34:38,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:34:38,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:34:38,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:34:38,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:34:38,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:34:38,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:34:38,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:34:38,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:34:38,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:34:38,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:34:38,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:34:38,625 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:34:38,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:34:38,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:34:38,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:34:38,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:34:38,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:34:38,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:34:38,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:34:38,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:34:38,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:34:38,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:34:38,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:34:38,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:34:38,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:34:38,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:34:38,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:34:38,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:34:38,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:34:38,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:34:38,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:34:38,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:34:38,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:34:38,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:34:38,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:34:38,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:34:38,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:34:39,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:34:39,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:34:39,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:34:39,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:34:39,129 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:34:39,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 14:34:39,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7c3ca8b8/34bc7f34040f43c79ced2752a6c4516e/FLAG0e1040475 [2020-09-25 14:34:39,747 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:34:39,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 14:34:39,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7c3ca8b8/34bc7f34040f43c79ced2752a6c4516e/FLAG0e1040475 [2020-09-25 14:34:40,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7c3ca8b8/34bc7f34040f43c79ced2752a6c4516e [2020-09-25 14:34:40,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:34:40,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:34:40,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:34:40,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:34:40,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:34:40,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7302eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40, skipping insertion in model container [2020-09-25 14:34:40,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:34:40,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:34:40,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:34:40,472 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:34:40,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:34:40,539 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:34:40,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40 WrapperNode [2020-09-25 14:34:40,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:34:40,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:34:40,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:34:40,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:34:40,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... [2020-09-25 14:34:40,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:34:40,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:34:40,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:34:40,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:34:40,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-25 14:34:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:34:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:34:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 14:34:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 14:34:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 14:34:40,793 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-25 14:34:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-25 14:34:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-25 14:34:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-25 14:34:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-25 14:34:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-25 14:34:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:34:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:34:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 14:34:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:34:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 14:34:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 14:34:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-25 14:34:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-25 14:34:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-25 14:34:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-25 14:34:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-25 14:34:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-25 14:34:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:34:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:34:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:34:41,208 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:34:41,209 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:34:41,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:34:41 BoogieIcfgContainer [2020-09-25 14:34:41,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:34:41,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:34:41,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:34:41,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:34:41,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:34:40" (1/3) ... [2020-09-25 14:34:41,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acfa82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:34:41, skipping insertion in model container [2020-09-25 14:34:41,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:40" (2/3) ... [2020-09-25 14:34:41,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acfa82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:34:41, skipping insertion in model container [2020-09-25 14:34:41,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:34:41" (3/3) ... [2020-09-25 14:34:41,225 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-25 14:34:41,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:34:41,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:34:41,269 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:34:41,302 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:34:41,302 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:34:41,302 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:34:41,302 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:34:41,303 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:34:41,303 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:34:41,303 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:34:41,303 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:34:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 14:34:41,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 14:34:41,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:41,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:41,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:41,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-25 14:34:41,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:41,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986262001] [2020-09-25 14:34:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:41,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:41,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:34:41,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 14:34:41,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:41,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:41,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 14:34:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:34:41,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:34:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:41,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:41,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:41,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:41,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:34:41,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:41,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 14:34:41,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:34:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:41,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:41,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:41,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:34:41,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:41,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:34:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:41,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:34:41,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986262001] [2020-09-25 14:34:41,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:41,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:34:41,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617223219] [2020-09-25 14:34:41,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:34:41,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:41,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:34:41,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:34:41,886 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 5 states. [2020-09-25 14:34:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:42,261 INFO L93 Difference]: Finished difference Result 265 states and 334 transitions. [2020-09-25 14:34:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:34:42,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 14:34:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:42,283 INFO L225 Difference]: With dead ends: 265 [2020-09-25 14:34:42,284 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 14:34:42,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:34:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 14:34:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 14:34:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 14:34:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-25 14:34:42,378 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 19 [2020-09-25 14:34:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:42,379 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-25 14:34:42,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:34:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-25 14:34:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 14:34:42,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:42,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:42,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:34:42,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:42,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:42,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-25 14:34:42,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:42,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199031600] [2020-09-25 14:34:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:42,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:43,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:43,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:34:43,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:34:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-09-25 14:34:43,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:43,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:34:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:34:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:43,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:43,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:43,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:43,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:34:43,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:43,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:34:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:43,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:43,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:43,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:43,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:34:43,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:43,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:34:43,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 14:34:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:43,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:43,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:43,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:43,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:34:43,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:43,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:43,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:34:43,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:34:43,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199031600] [2020-09-25 14:34:43,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:43,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:34:43,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251437324] [2020-09-25 14:34:43,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:34:43,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:43,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:34:43,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:34:43,216 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-25 14:34:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:43,539 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-09-25 14:34:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:34:43,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 14:34:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:43,544 INFO L225 Difference]: With dead ends: 411 [2020-09-25 14:34:43,544 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 14:34:43,546 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 [2020-09-25 14:34:43,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 14:34:43,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-09-25 14:34:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 14:34:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-09-25 14:34:43,573 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-09-25 14:34:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:43,573 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-09-25 14:34:43,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:34:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-09-25 14:34:43,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 14:34:43,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:43,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:43,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:34:43,577 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:43,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:43,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-09-25 14:34:43,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:43,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826521268] [2020-09-25 14:34:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:44,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:34:45,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:34:45,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1772 [2020-09-25 14:34:45,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 14:34:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:34:45,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:45,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:45,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:45,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:34:45,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:45,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:34:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:45,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:34:45,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:45,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:34:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:34:45,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:34:45,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:34:45,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:45,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:34:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:45,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:45,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:45,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:45,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:34:45,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:45,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:34:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:34:45,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826521268] [2020-09-25 14:34:45,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:45,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:34:45,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922831071] [2020-09-25 14:34:45,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:34:45,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:45,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:34:45,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:34:45,500 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 8 states. [2020-09-25 14:34:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:45,890 INFO L93 Difference]: Finished difference Result 573 states and 736 transitions. [2020-09-25 14:34:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:34:45,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 14:34:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:45,898 INFO L225 Difference]: With dead ends: 573 [2020-09-25 14:34:45,898 INFO L226 Difference]: Without dead ends: 387 [2020-09-25 14:34:45,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:34:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-09-25 14:34:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 240. [2020-09-25 14:34:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-25 14:34:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 298 transitions. [2020-09-25 14:34:45,940 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 298 transitions. Word has length 59 [2020-09-25 14:34:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:45,940 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 298 transitions. [2020-09-25 14:34:45,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:34:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 298 transitions. [2020-09-25 14:34:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 14:34:45,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:45,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:45,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:34:45,946 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:45,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times [2020-09-25 14:34:45,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:45,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380945713] [2020-09-25 14:34:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:50,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:50,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 14:34:50,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:34:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4405 [2020-09-25 14:34:50,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:50,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:34:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:34:50,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:34:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:50,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:50,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:50,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:34:50,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:50,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:34:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:50,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:50,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:50,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:34:50,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:50,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:34:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:34:50,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:34:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:50,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:50,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:34:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:34:50,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:50,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:34:50,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:34:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:34:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:50,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:50,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 14:34:50,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:50,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:34:50,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:50,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:34:50,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:50,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:34:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:50,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:50,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:50,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:50,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:34:50,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:50,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:34:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:34:50,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380945713] [2020-09-25 14:34:50,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:34:50,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:34:50,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093158058] [2020-09-25 14:34:50,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:34:50,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:50,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:34:50,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:34:50,607 INFO L87 Difference]: Start difference. First operand 240 states and 298 transitions. Second operand 10 states. [2020-09-25 14:34:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:51,144 INFO L93 Difference]: Finished difference Result 735 states and 963 transitions. [2020-09-25 14:34:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 14:34:51,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-09-25 14:34:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:51,149 INFO L225 Difference]: With dead ends: 735 [2020-09-25 14:34:51,150 INFO L226 Difference]: Without dead ends: 509 [2020-09-25 14:34:51,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:34:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-09-25 14:34:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 280. [2020-09-25 14:34:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-25 14:34:51,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 355 transitions. [2020-09-25 14:34:51,173 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 355 transitions. Word has length 79 [2020-09-25 14:34:51,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:51,174 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 355 transitions. [2020-09-25 14:34:51,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:34:51,174 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 355 transitions. [2020-09-25 14:34:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 14:34:51,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:51,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:51,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:34:51,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:51,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1731656998, now seen corresponding path program 1 times [2020-09-25 14:34:51,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:51,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594877389] [2020-09-25 14:34:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:51,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:51,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:51,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 14:34:51,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-25 14:34:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:51,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:34:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:34:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 14:34:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:51,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:51,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:51,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:51,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:34:51,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:51,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:51,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:34:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:51,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:51,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:51,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:51,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:34:51,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:51,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 14:34:51,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:51,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:34:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:51,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:51,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:51,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:34:51,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:34:51,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:51,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:34:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:34:51,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:34:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:51,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:51,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:51,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 14:34:51,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:51,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:34:51,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:51,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:34:51,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:51,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 14:34:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:51,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:51,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 14:34:51,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:34:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:51,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:34:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 14:34:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:52,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:52,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:34:52,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:52,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:34:52,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:52,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:34:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 14:34:52,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594877389] [2020-09-25 14:34:52,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:52,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:34:52,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053195657] [2020-09-25 14:34:52,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:34:52,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:52,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:34:52,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:34:52,028 INFO L87 Difference]: Start difference. First operand 280 states and 355 transitions. Second operand 7 states. [2020-09-25 14:34:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:52,295 INFO L93 Difference]: Finished difference Result 1092 states and 1427 transitions. [2020-09-25 14:34:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:34:52,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-09-25 14:34:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:52,302 INFO L225 Difference]: With dead ends: 1092 [2020-09-25 14:34:52,302 INFO L226 Difference]: Without dead ends: 826 [2020-09-25 14:34:52,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:34:52,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-09-25 14:34:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 513. [2020-09-25 14:34:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 14:34:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 658 transitions. [2020-09-25 14:34:52,331 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 658 transitions. Word has length 101 [2020-09-25 14:34:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:52,332 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 658 transitions. [2020-09-25 14:34:52,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:34:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 658 transitions. [2020-09-25 14:34:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 14:34:52,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:52,335 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:52,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:34:52,335 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:52,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-25 14:34:52,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:52,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611216346] [2020-09-25 14:34:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:34:52,354 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:34:52,355 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:34:52,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:34:52,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:34:52 BoogieIcfgContainer [2020-09-25 14:34:52,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:34:52,389 INFO L168 Benchmark]: Toolchain (without parser) took 12299.75 ms. Allocated memory was 138.4 MB in the beginning and 306.7 MB in the end (delta: 168.3 MB). Free memory was 101.4 MB in the beginning and 124.8 MB in the end (delta: -23.5 MB). Peak memory consumption was 144.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:52,390 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-25 14:34:52,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.31 ms. Allocated memory is still 138.4 MB. Free memory was 100.9 MB in the beginning and 90.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:52,392 INFO L168 Benchmark]: Boogie Preprocessor took 168.27 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 90.6 MB in the beginning and 180.7 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:52,393 INFO L168 Benchmark]: RCFGBuilder took 506.34 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 157.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:52,394 INFO L168 Benchmark]: TraceAbstraction took 11168.20 ms. Allocated memory was 202.4 MB in the beginning and 306.7 MB in the end (delta: 104.3 MB). Free memory was 157.8 MB in the beginning and 124.8 MB in the end (delta: 33.0 MB). Peak memory consumption was 137.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:52,401 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 447.31 ms. Allocated memory is still 138.4 MB. Free memory was 100.9 MB in the beginning and 90.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 168.27 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 90.6 MB in the beginning and 180.7 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 506.34 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 157.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11168.20 ms. Allocated memory was 202.4 MB in the beginning and 306.7 MB in the end (delta: 104.3 MB). Free memory was 157.8 MB in the beginning and 124.8 MB in the end (delta: 33.0 MB). Peak memory consumption was 137.3 MB. Max. memory is 7.1 GB. * 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; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.0s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 501 SDtfs, 1161 SDslu, 1484 SDs, 0 SdLazy, 874 SolverSat, 300 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred 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, 5 MinimizatonAttempts, 758 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 397 NumberOfCodeBlocks, 397 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 53191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 56/78 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...