/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 interpolation-heuristic=FIRST --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 [2020-09-24 16:01:06,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:06,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:06,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:06,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:06,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:06,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:06,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:06,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:06,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:06,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:06,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:06,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:06,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:06,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:06,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:06,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:06,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:06,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:06,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:06,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:06,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:06,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:06,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:06,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:06,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:06,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:06,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:06,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:06,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:06,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:06,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:06,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:06,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:06,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:06,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:06,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:06,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:06,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:06,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:06,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:06,671 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 [2020-09-24 16:01:06,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:06,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:06,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:06,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:06,722 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:06,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:06,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:06,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:06,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:06,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:06,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:06,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:06,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:06,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:06,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:06,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:06,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:06,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:06,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:06,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:06,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:06,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:06,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:06,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:06,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:06,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:06,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:06,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:06,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:06,729 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:01:07,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:07,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:07,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:07,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:07,218 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:07,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-24 16:01:07,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42eafe210/bfa222462764445997498469b8b0c673/FLAG467d85ca6 [2020-09-24 16:01:07,897 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:07,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-24 16:01:07,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42eafe210/bfa222462764445997498469b8b0c673/FLAG467d85ca6 [2020-09-24 16:01:08,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42eafe210/bfa222462764445997498469b8b0c673 [2020-09-24 16:01:08,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:08,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:08,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:08,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:08,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:08,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:08" (1/1) ... [2020-09-24 16:01:08,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08, skipping insertion in model container [2020-09-24 16:01:08,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:08" (1/1) ... [2020-09-24 16:01:08,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:08,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:08,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:08,477 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:08,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:08,517 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:08,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08 WrapperNode [2020-09-24 16:01:08,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:08,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:08,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:08,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:08,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08" (1/1) ... [2020-09-24 16:01:08,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08" (1/1) ... [2020-09-24 16:01:08,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08" (1/1) ... [2020-09-24 16:01:08,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08" (1/1) ... [2020-09-24 16:01:08,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08" (1/1) ... [2020-09-24 16:01:08,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08" (1/1) ... [2020-09-24 16:01:08,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08" (1/1) ... [2020-09-24 16:01:08,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:08,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:08,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:08,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:08,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08" (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 [2020-09-24 16:01:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 16:01:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-24 16:01:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-24 16:01:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-24 16:01:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-24 16:01:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-24 16:01:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-24 16:01:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-24 16:01:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-24 16:01:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 16:01:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-24 16:01:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-24 16:01:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-24 16:01:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-24 16:01:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-24 16:01:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-24 16:01:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-24 16:01:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-24 16:01:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:01:09,097 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:01:09,097 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:01:09,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:09 BoogieIcfgContainer [2020-09-24 16:01:09,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:01:09,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:01:09,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:01:09,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:01:09,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:08" (1/3) ... [2020-09-24 16:01:09,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46be317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:09, skipping insertion in model container [2020-09-24 16:01:09,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:08" (2/3) ... [2020-09-24 16:01:09,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46be317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:09, skipping insertion in model container [2020-09-24 16:01:09,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:09" (3/3) ... [2020-09-24 16:01:09,114 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-24 16:01:09,127 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:01:09,138 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:01:09,162 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:01:09,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:01:09,200 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:01:09,200 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:01:09,200 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:01:09,200 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:01:09,200 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:01:09,200 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:01:09,201 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:01:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-24 16:01:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 16:01:09,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:09,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:09,236 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:09,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:09,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-24 16:01:09,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:09,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566625636] [2020-09-24 16:01:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:09,390 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:09,391 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:09,391 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:09,391 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:09,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 16:01:09,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:09,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 16:01:09,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:01:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:09,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:09,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:09,463 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:09,464 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:09,464 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:09,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:09,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:09,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:09,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:09,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:01:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:09,486 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:09,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:09,486 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:09,487 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:09,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:09,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:09,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:09,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:09,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:09,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:09,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566625636] [2020-09-24 16:01:09,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:09,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:01:09,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201929636] [2020-09-24 16:01:09,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:01:09,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:09,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:01:09,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:01:09,529 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-09-24 16:01:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:09,775 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2020-09-24 16:01:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:01:09,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-24 16:01:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:09,795 INFO L225 Difference]: With dead ends: 199 [2020-09-24 16:01:09,795 INFO L226 Difference]: Without dead ends: 101 [2020-09-24 16:01:09,801 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 [2020-09-24 16:01:09,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-24 16:01:09,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-09-24 16:01:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-24 16:01:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-09-24 16:01:09,864 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 19 [2020-09-24 16:01:09,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:09,865 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-09-24 16:01:09,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:01:09,865 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-09-24 16:01:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 16:01:09,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:09,866 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] [2020-09-24 16:01:09,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:01:09,867 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:09,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:09,868 INFO L82 PathProgramCache]: Analyzing trace with hash 837576233, now seen corresponding path program 1 times [2020-09-24 16:01:09,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:09,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785918326] [2020-09-24 16:01:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:09,907 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:09,907 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:09,908 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:09,908 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:09,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 16:01:09,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:09,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 16:01:09,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 16:01:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 16:01:09,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:09,965 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:09,965 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:09,965 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:09,966 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:09,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:09,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:01:09,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 16:01:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:09,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:01:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:09,992 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:09,992 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:09,993 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:09,993 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:09,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:09,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:01:09,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:09,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:01:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:10,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785918326] [2020-09-24 16:01:10,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:10,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:01:10,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536039565] [2020-09-24 16:01:10,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:01:10,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:10,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:01:10,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:01:10,013 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 5 states. [2020-09-24 16:01:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:10,307 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2020-09-24 16:01:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:01:10,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-24 16:01:10,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:10,311 INFO L225 Difference]: With dead ends: 171 [2020-09-24 16:01:10,311 INFO L226 Difference]: Without dead ends: 164 [2020-09-24 16:01:10,312 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 [2020-09-24 16:01:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-24 16:01:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-24 16:01:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-24 16:01:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-24 16:01:10,339 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2020-09-24 16:01:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:10,339 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-24 16:01:10,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:01:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-24 16:01:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 16:01:10,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:10,342 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] [2020-09-24 16:01:10,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:01:10,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:10,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-24 16:01:10,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:10,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354200355] [2020-09-24 16:01:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:10,390 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:10,390 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:10,390 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:10,390 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 16:01:10,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 16:01:10,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:01:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 16:01:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:10,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:10,469 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:10,472 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:10,473 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:10,473 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:10,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:10,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:01:10,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:10,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:10,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:01:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:10,494 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:10,494 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:10,494 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:10,495 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:10,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:10,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:10,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:01:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:10,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 16:01:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:10,514 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:10,514 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:10,514 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:10,514 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:10,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:10,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:10,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:10,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:01:10,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:10,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:10,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354200355] [2020-09-24 16:01:10,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:10,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:01:10,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474281004] [2020-09-24 16:01:10,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:01:10,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:10,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:01:10,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:01:10,526 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-24 16:01:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:10,779 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-09-24 16:01:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 16:01:10,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-24 16:01:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:10,783 INFO L225 Difference]: With dead ends: 411 [2020-09-24 16:01:10,783 INFO L226 Difference]: Without dead ends: 265 [2020-09-24 16:01:10,785 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 [2020-09-24 16:01:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-24 16:01:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-09-24 16:01:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-24 16:01:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-09-24 16:01:10,810 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-09-24 16:01:10,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:10,811 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-09-24 16:01:10,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:01:10,811 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-09-24 16:01:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 16:01:10,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:10,814 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] [2020-09-24 16:01:10,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:01:10,814 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:10,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:10,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-09-24 16:01:10,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:10,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218621447] [2020-09-24 16:01:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:10,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:10,849 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:10,849 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:10,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:10,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 16:01:10,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:10,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:01:10,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:01:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 16:01:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:10,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:10,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:10,937 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:10,937 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:10,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:10,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:10,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:10,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:10,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:10,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:01:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:10,960 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:10,963 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:10,964 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:10,964 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:10,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:10,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:01:10,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:01:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 16:01:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:10,989 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:10,992 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:10,992 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:10,993 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:10,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:01:10,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:01:10,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:01:10,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:11,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 16:01:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:11,013 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:11,016 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:11,017 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:11,017 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:11,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:11,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:11,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:01:11,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:11,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:11,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:01:11,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:11,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:11,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218621447] [2020-09-24 16:01:11,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:11,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 16:01:11,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738762434] [2020-09-24 16:01:11,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:01:11,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:11,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:01:11,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:11,040 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 8 states. [2020-09-24 16:01:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:11,484 INFO L93 Difference]: Finished difference Result 513 states and 648 transitions. [2020-09-24 16:01:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:01:11,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-24 16:01:11,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:11,488 INFO L225 Difference]: With dead ends: 513 [2020-09-24 16:01:11,489 INFO L226 Difference]: Without dead ends: 327 [2020-09-24 16:01:11,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:01:11,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-09-24 16:01:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 240. [2020-09-24 16:01:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-24 16:01:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 296 transitions. [2020-09-24 16:01:11,512 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 296 transitions. Word has length 59 [2020-09-24 16:01:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:11,513 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 296 transitions. [2020-09-24 16:01:11,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:01:11,513 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 296 transitions. [2020-09-24 16:01:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 16:01:11,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:11,517 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] [2020-09-24 16:01:11,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:01:11,517 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:11,517 INFO L82 PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times [2020-09-24 16:01:11,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:11,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941788702] [2020-09-24 16:01:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:11,550 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:11,550 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:11,551 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:11,551 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:11,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 16:01:11,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:11,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:01:11,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 16:01:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 16:01:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:11,640 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:11,640 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:11,640 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:11,641 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:11,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:11,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:11,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:11,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:11,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:01:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:11,654 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:11,654 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:11,654 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:11,654 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:11,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 16:01:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:11,660 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:11,661 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:11,661 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:11,661 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:11,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:01:11,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:11,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:11,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 16:01:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:11,670 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:11,670 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:11,670 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:11,670 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:11,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:01:11,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:11,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 16:01:11,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:11,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 16:01:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:11,688 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:11,688 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:11,688 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:11,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:11,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:11,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:11,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:11,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:01:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:11,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 16:01:11,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941788702] [2020-09-24 16:01:11,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:11,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:01:11,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752417270] [2020-09-24 16:01:11,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:01:11,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:11,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:01:11,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:11,701 INFO L87 Difference]: Start difference. First operand 240 states and 296 transitions. Second operand 8 states. [2020-09-24 16:01:12,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:12,042 INFO L93 Difference]: Finished difference Result 611 states and 778 transitions. [2020-09-24 16:01:12,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:01:12,043 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-24 16:01:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:12,047 INFO L225 Difference]: With dead ends: 611 [2020-09-24 16:01:12,047 INFO L226 Difference]: Without dead ends: 385 [2020-09-24 16:01:12,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:01:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-09-24 16:01:12,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 280. [2020-09-24 16:01:12,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-24 16:01:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 353 transitions. [2020-09-24 16:01:12,069 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 353 transitions. Word has length 79 [2020-09-24 16:01:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:12,069 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 353 transitions. [2020-09-24 16:01:12,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:01:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 353 transitions. [2020-09-24 16:01:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 16:01:12,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:12,074 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] [2020-09-24 16:01:12,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:01:12,074 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1731656998, now seen corresponding path program 1 times [2020-09-24 16:01:12,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:12,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758107028] [2020-09-24 16:01:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,123 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,124 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 16:01:12,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:01:12,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:01:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-24 16:01:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:01:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:12,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-24 16:01:12,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:12,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:01:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,236 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:12,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:12,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:12,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 16:01:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,243 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,243 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,243 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 16:01:12,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:12,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 16:01:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,248 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:01:12,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:12,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:12,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 16:01:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,254 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,254 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,254 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,255 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:01:12,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:12,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 16:01:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:12,267 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:12,267 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:12,267 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:12,268 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:12,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:01:12,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:01:12,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:01:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 16:01:12,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-24 16:01:12,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758107028] [2020-09-24 16:01:12,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:12,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:01:12,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067631118] [2020-09-24 16:01:12,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:01:12,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:12,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:01:12,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:01:12,292 INFO L87 Difference]: Start difference. First operand 280 states and 353 transitions. Second operand 6 states. [2020-09-24 16:01:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:12,482 INFO L93 Difference]: Finished difference Result 519 states and 662 transitions. [2020-09-24 16:01:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:01:12,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-09-24 16:01:12,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:12,488 INFO L225 Difference]: With dead ends: 519 [2020-09-24 16:01:12,488 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 16:01:12,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 16:01:12,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 152. [2020-09-24 16:01:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-24 16:01:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2020-09-24 16:01:12,507 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 183 transitions. Word has length 101 [2020-09-24 16:01:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:12,510 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 183 transitions. [2020-09-24 16:01:12,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:01:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 183 transitions. [2020-09-24 16:01:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 16:01:12,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:12,516 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] [2020-09-24 16:01:12,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:01:12,517 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:12,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:12,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-24 16:01:12,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:12,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550582591] [2020-09-24 16:01:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:01:12,567 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:01:12,567 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:01:12,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:01:12,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:01:12 BoogieIcfgContainer [2020-09-24 16:01:12,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:01:12,618 INFO L168 Benchmark]: Toolchain (without parser) took 4429.24 ms. Allocated memory was 147.8 MB in the beginning and 244.8 MB in the end (delta: 97.0 MB). Free memory was 104.0 MB in the beginning and 153.3 MB in the end (delta: -49.3 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:12,619 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:01:12,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.49 ms. Allocated memory is still 147.8 MB. Free memory was 103.3 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:12,627 INFO L168 Benchmark]: Boogie Preprocessor took 134.75 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 93.1 MB in the beginning and 181.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:12,628 INFO L168 Benchmark]: RCFGBuilder took 450.09 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 160.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:12,629 INFO L168 Benchmark]: TraceAbstraction took 3506.95 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 159.8 MB in the beginning and 153.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:12,642 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.49 ms. Allocated memory is still 147.8 MB. Free memory was 103.3 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.75 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 93.1 MB in the beginning and 181.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.09 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 160.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3506.95 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 159.8 MB in the beginning and 153.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 47.4 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: 3.3s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 593 SDtfs, 796 SDslu, 1290 SDs, 0 SdLazy, 772 SolverSat, 244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred 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, 367 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 418 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 34423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 72/78 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...