/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:31:24,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:31:24,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:31:24,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:31:24,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:31:24,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:31:24,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:31:24,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:31:24,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:31:24,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:31:24,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:31:24,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:31:24,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:31:24,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:31:24,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:31:24,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:31:24,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:31:24,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:31:24,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:31:24,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:31:24,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:31:24,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:31:24,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:31:24,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:31:24,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:31:24,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:31:24,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:31:24,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:31:24,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:31:24,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:31:24,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:31:24,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:31:24,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:31:24,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:31:24,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:31:24,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:31:24,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:31:24,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:31:24,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:31:24,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:31:24,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:31:24,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:31:24,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:31:24,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:31:24,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:31:24,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:31:24,770 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:31:24,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:31:24,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:31:24,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:31:24,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:31:24,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:31:24,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:31:24,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:31:24,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:31:24,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:31:24,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:31:24,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:31:24,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:31:24,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:31:24,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:31:24,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:31:24,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:31:24,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:31:24,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:31:24,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:31:24,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:31:24,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:31:24,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:31:24,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:31:24,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:31:24,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:31:25,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:31:25,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:31:25,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:31:25,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:31:25,237 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:31:25,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 05:31:25,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/155c53e48/a1532e21e7474d529c9c3abbc54f924a/FLAGae4756716 [2020-09-25 05:31:25,907 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:31:25,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 05:31:25,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/155c53e48/a1532e21e7474d529c9c3abbc54f924a/FLAGae4756716 [2020-09-25 05:31:26,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/155c53e48/a1532e21e7474d529c9c3abbc54f924a [2020-09-25 05:31:26,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:31:26,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:31:26,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:26,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:31:26,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:31:26,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:26" (1/1) ... [2020-09-25 05:31:26,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c31b5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26, skipping insertion in model container [2020-09-25 05:31:26,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:26" (1/1) ... [2020-09-25 05:31:26,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:31:26,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:31:26,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:26,551 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:31:26,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:26,597 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:31:26,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26 WrapperNode [2020-09-25 05:31:26,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:26,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:31:26,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:31:26,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:31:26,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26" (1/1) ... [2020-09-25 05:31:26,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26" (1/1) ... [2020-09-25 05:31:26,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26" (1/1) ... [2020-09-25 05:31:26,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26" (1/1) ... [2020-09-25 05:31:26,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26" (1/1) ... [2020-09-25 05:31:26,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26" (1/1) ... [2020-09-25 05:31:26,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26" (1/1) ... [2020-09-25 05:31:26,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:31:26,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:31:26,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:31:26,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:31:26,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:31:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:31:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:31:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 05:31:26,822 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 05:31:26,822 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 05:31:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-25 05:31:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-25 05:31:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-25 05:31:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-25 05:31:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-25 05:31:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-25 05:31:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:31:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:31:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 05:31:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:31:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 05:31:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 05:31:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-25 05:31:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-25 05:31:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-25 05:31:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-25 05:31:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-25 05:31:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-25 05:31:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:31:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:31:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:31:27,228 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:31:27,228 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:31:27,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:27 BoogieIcfgContainer [2020-09-25 05:31:27,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:31:27,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:31:27,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:31:27,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:31:27,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:31:26" (1/3) ... [2020-09-25 05:31:27,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd21b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:27, skipping insertion in model container [2020-09-25 05:31:27,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:26" (2/3) ... [2020-09-25 05:31:27,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd21b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:27, skipping insertion in model container [2020-09-25 05:31:27,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:27" (3/3) ... [2020-09-25 05:31:27,244 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-25 05:31:27,257 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:31:27,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:31:27,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:31:27,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:31:27,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:31:27,315 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:31:27,315 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:31:27,315 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:31:27,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:31:27,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:31:27,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:31:27,340 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 05:31:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 05:31:27,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:27,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:27,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:27,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-25 05:31:27,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:27,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515936832] [2020-09-25 05:31:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:27,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:27,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:31:27,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 05:31:27,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:27,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:31:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:31:27,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:27,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:27,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:27,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:27,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:31:27,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:27,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:27,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:31:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:27,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:27,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:27,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:31:27,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:27,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:31:27,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515936832] [2020-09-25 05:31:27,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:27,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:31:27,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898872554] [2020-09-25 05:31:27,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:31:27,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:27,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:31:27,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:31:27,932 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-09-25 05:31:28,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:28,139 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2020-09-25 05:31:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:31:28,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-25 05:31:28,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:28,158 INFO L225 Difference]: With dead ends: 199 [2020-09-25 05:31:28,158 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 05:31:28,164 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 [2020-09-25 05:31:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 05:31:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-09-25 05:31:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 05:31:28,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-09-25 05:31:28,234 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 19 [2020-09-25 05:31:28,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:28,235 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-09-25 05:31:28,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:31:28,235 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-09-25 05:31:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 05:31:28,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:28,237 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] [2020-09-25 05:31:28,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:31:28,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:28,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:28,238 INFO L82 PathProgramCache]: Analyzing trace with hash 837576233, now seen corresponding path program 1 times [2020-09-25 05:31:28,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:28,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148728852] [2020-09-25 05:31:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:28,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:28,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:31:28,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 05:31:28,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:28,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 05:31:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:31:28,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:28,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:28,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:28,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:31:28,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:28,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:31:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:28,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:31:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:28,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:28,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:28,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:31:28,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:28,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:31:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:31:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:31:28,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148728852] [2020-09-25 05:31:28,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:28,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:31:28,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460387894] [2020-09-25 05:31:28,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:31:28,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:28,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:31:28,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:31:28,555 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 5 states. [2020-09-25 05:31:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:28,841 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2020-09-25 05:31:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:31:28,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-25 05:31:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:28,846 INFO L225 Difference]: With dead ends: 171 [2020-09-25 05:31:28,846 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 05:31:28,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:31:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 05:31:28,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 05:31:28,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 05:31:28,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-25 05:31:28,877 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2020-09-25 05:31:28,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:28,877 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-25 05:31:28,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:31:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-25 05:31:28,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 05:31:28,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:28,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:28,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:31:28,880 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:28,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:28,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-25 05:31:28,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:28,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619454732] [2020-09-25 05:31:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:29,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:29,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 05:31:29,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:31:29,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-09-25 05:31:29,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:29,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:31:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:31:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:29,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:29,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:29,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:31:29,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:29,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:29,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:31:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:29,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:29,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:31:29,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:29,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:31:29,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 05:31:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:29,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:29,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:29,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:31:29,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:29,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:31:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:31:29,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619454732] [2020-09-25 05:31:29,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:29,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:31:29,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851509224] [2020-09-25 05:31:29,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:31:29,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:29,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:31:29,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:31:29,533 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-25 05:31:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:29,824 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-09-25 05:31:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:31:29,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 05:31:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:29,832 INFO L225 Difference]: With dead ends: 411 [2020-09-25 05:31:29,835 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 05:31:29,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:31:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 05:31:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-09-25 05:31:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 05:31:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-09-25 05:31:29,900 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-09-25 05:31:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:29,903 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-09-25 05:31:29,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:31:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-09-25 05:31:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 05:31:29,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:29,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:29,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:31:29,920 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:29,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:29,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-09-25 05:31:29,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:29,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744222145] [2020-09-25 05:31:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:29,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:30,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:31,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:31,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:31:31,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:31:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1882 [2020-09-25 05:31:31,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:31,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:31:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:31:31,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:31,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:31,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:31,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:31:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:31,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:31,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:31:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:31,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:31,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:31,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:31,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:31:31,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:31,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:31:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:31:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:31,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:31:31,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:31,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:31:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:31,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 05:31:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:31,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:31,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:31:31,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:31,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:31:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:31:31,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744222145] [2020-09-25 05:31:31,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:31,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:31:31,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836888738] [2020-09-25 05:31:31,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:31:31,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:31,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:31:31,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:31:31,947 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 8 states. [2020-09-25 05:31:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:32,324 INFO L93 Difference]: Finished difference Result 573 states and 736 transitions. [2020-09-25 05:31:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:31:32,325 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 05:31:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:32,329 INFO L225 Difference]: With dead ends: 573 [2020-09-25 05:31:32,329 INFO L226 Difference]: Without dead ends: 387 [2020-09-25 05:31:32,331 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 [2020-09-25 05:31:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-09-25 05:31:32,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 240. [2020-09-25 05:31:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-25 05:31:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 298 transitions. [2020-09-25 05:31:32,375 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 298 transitions. Word has length 59 [2020-09-25 05:31:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:32,375 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 298 transitions. [2020-09-25 05:31:32,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:31:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 298 transitions. [2020-09-25 05:31:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 05:31:32,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:32,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:32,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:31:32,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:32,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:32,380 INFO L82 PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times [2020-09-25 05:31:32,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:32,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593999501] [2020-09-25 05:31:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:32,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:32,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:33,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:36,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:36,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 05:31:36,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:31:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4562 [2020-09-25 05:31:36,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:36,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 05:31:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:31:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:37,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:37,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:37,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:37,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:31:37,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:37,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:37,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:37,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:37,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:31:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:37,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:37,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:37,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:31:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:37,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:37,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:31:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:37,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:37,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:37,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:31:37,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:37,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:37,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 05:31:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:37,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:37,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:37,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:31:37,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:31:37,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:37,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:31:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 05:31:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:37,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:37,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:31:37,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:37,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:31:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 05:31:37,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593999501] [2020-09-25 05:31:37,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:37,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:31:37,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982586618] [2020-09-25 05:31:37,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:31:37,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:37,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:31:37,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:31:37,112 INFO L87 Difference]: Start difference. First operand 240 states and 298 transitions. Second operand 8 states. [2020-09-25 05:31:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:37,522 INFO L93 Difference]: Finished difference Result 733 states and 952 transitions. [2020-09-25 05:31:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:31:37,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-25 05:31:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:37,534 INFO L225 Difference]: With dead ends: 733 [2020-09-25 05:31:37,534 INFO L226 Difference]: Without dead ends: 507 [2020-09-25 05:31:37,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:31:37,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-25 05:31:37,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 320. [2020-09-25 05:31:37,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-09-25 05:31:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 410 transitions. [2020-09-25 05:31:37,571 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 410 transitions. Word has length 79 [2020-09-25 05:31:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:37,572 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 410 transitions. [2020-09-25 05:31:37,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:31:37,572 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 410 transitions. [2020-09-25 05:31:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 05:31:37,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:37,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:37,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:31:37,585 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:37,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1731656998, now seen corresponding path program 1 times [2020-09-25 05:31:37,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:37,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506467729] [2020-09-25 05:31:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:38,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:38,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 05:31:38,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-09-25 05:31:38,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:38,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:38,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-25 05:31:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:31:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:38,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:38,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:38,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:38,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:31:38,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:38,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:38,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:31:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:38,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:38,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:38,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:31:38,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:38,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:38,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:31:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:38,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:38,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:38,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:31:38,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:38,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:38,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:38,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 05:31:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:38,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:38,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:38,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:31:38,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:38,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:31:38,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:38,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:38,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:31:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:38,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:38,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:31:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:31:38,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:38,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:38,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 05:31:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:38,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:38,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:31:38,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:31:38,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:38,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:31:38,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 05:31:38,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506467729] [2020-09-25 05:31:38,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:38,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:31:38,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932745725] [2020-09-25 05:31:38,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:31:38,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:38,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:31:38,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:31:38,373 INFO L87 Difference]: Start difference. First operand 320 states and 410 transitions. Second operand 6 states. [2020-09-25 05:31:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:38,564 INFO L93 Difference]: Finished difference Result 599 states and 775 transitions. [2020-09-25 05:31:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:31:38,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-09-25 05:31:38,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:38,570 INFO L225 Difference]: With dead ends: 599 [2020-09-25 05:31:38,570 INFO L226 Difference]: Without dead ends: 293 [2020-09-25 05:31:38,571 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 [2020-09-25 05:31:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-25 05:31:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 172. [2020-09-25 05:31:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-25 05:31:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 211 transitions. [2020-09-25 05:31:38,584 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 211 transitions. Word has length 101 [2020-09-25 05:31:38,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:38,584 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 211 transitions. [2020-09-25 05:31:38,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:31:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 211 transitions. [2020-09-25 05:31:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 05:31:38,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:38,586 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:38,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:31:38,587 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:38,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-25 05:31:38,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:38,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595519547] [2020-09-25 05:31:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:31:38,610 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:31:38,610 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:31:38,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:31:38,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:31:38 BoogieIcfgContainer [2020-09-25 05:31:38,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:31:38,659 INFO L168 Benchmark]: Toolchain (without parser) took 12396.54 ms. Allocated memory was 140.5 MB in the beginning and 316.1 MB in the end (delta: 175.6 MB). Free memory was 103.9 MB in the beginning and 263.1 MB in the end (delta: -159.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:38,660 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:31:38,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.39 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 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. [2020-09-25 05:31:38,669 INFO L168 Benchmark]: Boogie Preprocessor took 131.31 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 182.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:38,670 INFO L168 Benchmark]: RCFGBuilder took 504.13 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 160.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:38,670 INFO L168 Benchmark]: TraceAbstraction took 11417.79 ms. Allocated memory was 203.9 MB in the beginning and 316.1 MB in the end (delta: 112.2 MB). Free memory was 159.8 MB in the beginning and 266.9 MB in the end (delta: -107.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:38,683 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.39 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 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 131.31 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 182.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.13 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 160.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11417.79 ms. Allocated memory was 203.9 MB in the beginning and 316.1 MB in the end (delta: 112.2 MB). Free memory was 159.8 MB in the beginning and 266.9 MB in the end (delta: -107.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 592 SDtfs, 888 SDslu, 1282 SDs, 0 SdLazy, 768 SolverSat, 259 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred 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: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 529 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 418 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 35463 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...