/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:25:35,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:25:35,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:25:35,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:25:35,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:25:35,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:25:35,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:25:35,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:25:35,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:25:35,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:25:35,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:25:35,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:25:35,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:25:35,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:25:35,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:25:35,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:25:35,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:25:35,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:25:35,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:25:35,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:25:35,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:25:35,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:25:35,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:25:35,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:25:35,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:25:35,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:25:35,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:25:35,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:25:35,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:25:35,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:25:35,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:25:35,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:25:35,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:25:35,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:25:35,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:25:35,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:25:35,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:25:35,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:25:35,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:25:35,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:25:35,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:25:35,692 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 [2020-10-14 01:25:35,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:25:35,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:25:35,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:25:35,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:25:35,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:25:35,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:25:35,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:25:35,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:25:35,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:25:35,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:25:35,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:25:35,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:25:35,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:25:35,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:25:35,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:25:35,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:25:35,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:25:35,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:25:35,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:25:35,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:25:35,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:25:35,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:25:35,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:25:35,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:25:35,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:25:35,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:25:35,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:25:35,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:25:35,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:25:35,733 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-14 01:25:36,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:25:36,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:25:36,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:25:36,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:25:36,121 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:25:36,123 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label50.c [2020-10-14 01:25:36,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b83c17b30/e4ee54fa270a4b0c86ecd11ebea42bc9/FLAG56f29e282 [2020-10-14 01:25:37,130 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:25:37,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label50.c [2020-10-14 01:25:37,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b83c17b30/e4ee54fa270a4b0c86ecd11ebea42bc9/FLAG56f29e282 [2020-10-14 01:25:37,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b83c17b30/e4ee54fa270a4b0c86ecd11ebea42bc9 [2020-10-14 01:25:37,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:25:37,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:25:37,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:25:37,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:25:37,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:25:37,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:25:37" (1/1) ... [2020-10-14 01:25:37,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33fb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:37, skipping insertion in model container [2020-10-14 01:25:37,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:25:37" (1/1) ... [2020-10-14 01:25:37,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:25:37,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:25:40,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:25:40,109 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:25:41,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:25:41,461 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:25:41,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41 WrapperNode [2020-10-14 01:25:41,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:25:41,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:25:41,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:25:41,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:25:41,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41" (1/1) ... [2020-10-14 01:25:41,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41" (1/1) ... [2020-10-14 01:25:41,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41" (1/1) ... [2020-10-14 01:25:41,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41" (1/1) ... [2020-10-14 01:25:41,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41" (1/1) ... [2020-10-14 01:25:41,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41" (1/1) ... [2020-10-14 01:25:42,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41" (1/1) ... [2020-10-14 01:25:42,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:25:42,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:25:42,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:25:42,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:25:42,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41" (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 [2020-10-14 01:25:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:25:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:25:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:25:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:25:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:25:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:25:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:25:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 01:25:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 01:25:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 01:25:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:25:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:25:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:25:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:25:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:25:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:25:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 01:25:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 01:25:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 01:25:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:25:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:25:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:25:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:25:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:25:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:25:50,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:25:50,403 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:25:50,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:25:50 BoogieIcfgContainer [2020-10-14 01:25:50,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:25:50,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:25:50,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:25:50,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:25:50,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:25:37" (1/3) ... [2020-10-14 01:25:50,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789ad5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:25:50, skipping insertion in model container [2020-10-14 01:25:50,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:25:41" (2/3) ... [2020-10-14 01:25:50,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789ad5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:25:50, skipping insertion in model container [2020-10-14 01:25:50,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:25:50" (3/3) ... [2020-10-14 01:25:50,427 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label50.c [2020-10-14 01:25:50,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:25:50,448 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:25:50,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:25:50,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:25:50,496 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:25:50,496 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:25:50,496 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:25:50,496 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:25:50,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:25:50,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:25:50,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:25:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 01:25:50,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2020-10-14 01:25:50,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:25:50,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:25:50,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:25:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:25:50,666 INFO L82 PathProgramCache]: Analyzing trace with hash 462139361, now seen corresponding path program 1 times [2020-10-14 01:25:50,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:25:50,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112102017] [2020-10-14 01:25:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:25:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:57,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:57,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1724 [2020-10-14 01:25:57,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5226 [2020-10-14 01:25:57,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:57,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:57,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 01:25:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:25:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1718 [2020-10-14 01:25:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:25:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:25:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:25:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:25:58,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:25:58,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:25:58,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:25:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:25:58,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:25:58,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:25:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:25:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:25:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:25:58,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:26:00,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112102017] [2020-10-14 01:26:00,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:26:00,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:26:00,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771976932] [2020-10-14 01:26:00,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:26:00,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:26:00,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:26:00,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:26:00,976 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-14 01:26:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:26:17,687 INFO L93 Difference]: Finished difference Result 6309 states and 11850 transitions. [2020-10-14 01:26:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:26:17,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1702 [2020-10-14 01:26:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:26:17,749 INFO L225 Difference]: With dead ends: 6309 [2020-10-14 01:26:17,750 INFO L226 Difference]: Without dead ends: 4023 [2020-10-14 01:26:17,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:26:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2020-10-14 01:26:18,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 4008. [2020-10-14 01:26:18,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4008 states. [2020-10-14 01:26:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 6271 transitions. [2020-10-14 01:26:18,028 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 6271 transitions. Word has length 1702 [2020-10-14 01:26:18,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:26:18,035 INFO L479 AbstractCegarLoop]: Abstraction has 4008 states and 6271 transitions. [2020-10-14 01:26:18,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:26:18,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 6271 transitions. [2020-10-14 01:26:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2020-10-14 01:26:18,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:26:18,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:26:18,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:26:18,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:26:18,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:26:18,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2055157974, now seen corresponding path program 1 times [2020-10-14 01:26:18,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:26:18,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290468115] [2020-10-14 01:26:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:26:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:21,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:23,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:23,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1735 [2020-10-14 01:26:23,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:26:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5302 [2020-10-14 01:26:23,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:23,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:26:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:26:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:26:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:26:24,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:26:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:24,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:24,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:26:24,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:26:24,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:24,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:26:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:26:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:26:24,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:24,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:26:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:24,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:24,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:24,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:26:24,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:26:24,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:24,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:26:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:26:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:26:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:26:25,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290468115] [2020-10-14 01:26:25,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:26:25,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:26:25,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317969719] [2020-10-14 01:26:25,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:26:25,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:26:25,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:26:25,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:26:25,848 INFO L87 Difference]: Start difference. First operand 4008 states and 6271 transitions. Second operand 7 states. [2020-10-14 01:26:50,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:26:50,965 INFO L93 Difference]: Finished difference Result 11962 states and 18970 transitions. [2020-10-14 01:26:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:26:50,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1711 [2020-10-14 01:26:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:26:51,021 INFO L225 Difference]: With dead ends: 11962 [2020-10-14 01:26:51,022 INFO L226 Difference]: Without dead ends: 7960 [2020-10-14 01:26:51,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:26:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2020-10-14 01:26:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7734. [2020-10-14 01:26:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7734 states. [2020-10-14 01:26:51,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7734 states to 7734 states and 10944 transitions. [2020-10-14 01:26:51,282 INFO L78 Accepts]: Start accepts. Automaton has 7734 states and 10944 transitions. Word has length 1711 [2020-10-14 01:26:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:26:51,283 INFO L479 AbstractCegarLoop]: Abstraction has 7734 states and 10944 transitions. [2020-10-14 01:26:51,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:26:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 7734 states and 10944 transitions. [2020-10-14 01:26:51,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2020-10-14 01:26:51,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:26:51,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:26:51,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:26:51,343 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:26:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:26:51,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1643436262, now seen corresponding path program 1 times [2020-10-14 01:26:51,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:26:51,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740898193] [2020-10-14 01:26:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:26:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:56,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:56,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1749 [2020-10-14 01:26:56,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:26:56,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 01:26:56,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:56,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:26:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 01:26:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:26:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:57,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:26:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:57,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:57,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:57,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:26:57,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:26:57,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:57,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:26:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:26:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:26:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:26:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:57,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:57,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:26:57,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:26:57,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:57,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:26:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:26:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 01:26:57,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:57,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 01:26:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:26:57,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:26:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:26:57,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:26:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:26:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:26:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:26:57,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:26:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:26:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:26:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:26:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:26:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:26:58,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740898193] [2020-10-14 01:26:58,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:26:58,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:26:58,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965261755] [2020-10-14 01:26:58,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:26:58,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:26:58,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:26:58,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:26:58,701 INFO L87 Difference]: Start difference. First operand 7734 states and 10944 transitions. Second operand 7 states. [2020-10-14 01:27:23,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:27:23,298 INFO L93 Difference]: Finished difference Result 23304 states and 34161 transitions. [2020-10-14 01:27:23,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:27:23,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1723 [2020-10-14 01:27:23,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:27:23,372 INFO L225 Difference]: With dead ends: 23304 [2020-10-14 01:27:23,373 INFO L226 Difference]: Without dead ends: 15576 [2020-10-14 01:27:23,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:27:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15576 states. [2020-10-14 01:27:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15576 to 15312. [2020-10-14 01:27:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15312 states. [2020-10-14 01:27:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15312 states to 15312 states and 20097 transitions. [2020-10-14 01:27:23,816 INFO L78 Accepts]: Start accepts. Automaton has 15312 states and 20097 transitions. Word has length 1723 [2020-10-14 01:27:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:27:23,819 INFO L479 AbstractCegarLoop]: Abstraction has 15312 states and 20097 transitions. [2020-10-14 01:27:23,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:27:23,820 INFO L276 IsEmpty]: Start isEmpty. Operand 15312 states and 20097 transitions. [2020-10-14 01:27:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2020-10-14 01:27:23,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:27:23,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:27:23,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:27:23,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:27:23,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:27:23,908 INFO L82 PathProgramCache]: Analyzing trace with hash 547362183, now seen corresponding path program 1 times [2020-10-14 01:27:23,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:27:23,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521709923] [2020-10-14 01:27:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:27:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:24,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:29,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:29,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1767 [2020-10-14 01:27:29,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:27:29,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 01:27:29,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:29,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:29,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:27:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 01:27:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:27:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:27:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:27:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:29,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:29,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:27:29,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:27:29,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:27:29,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:29,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:29,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:27:29,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:27:29,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:27:29,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:27:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:27:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:29,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:29,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:29,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:27:29,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:27:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:27:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:29,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:27:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:27:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 01:27:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:27:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 01:27:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:29,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:29,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 01:27:29,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:27:29,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:27:29,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:29,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:27:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:27:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:27:29,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:27:29,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 01:27:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:29,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:29,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:27:29,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:27:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:27:29,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:29,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:27:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 01:27:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:27:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:27:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 39 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 01:27:30,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521709923] [2020-10-14 01:27:30,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:27:30,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:27:30,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648621160] [2020-10-14 01:27:30,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:27:30,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:27:30,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:27:30,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:27:30,661 INFO L87 Difference]: Start difference. First operand 15312 states and 20097 transitions. Second operand 7 states. [2020-10-14 01:27:53,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:27:53,701 INFO L93 Difference]: Finished difference Result 45964 states and 62966 transitions. [2020-10-14 01:27:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:27:53,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1739 [2020-10-14 01:27:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:27:53,817 INFO L225 Difference]: With dead ends: 45964 [2020-10-14 01:27:53,818 INFO L226 Difference]: Without dead ends: 30658 [2020-10-14 01:27:53,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:27:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30658 states. [2020-10-14 01:27:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30658 to 30519. [2020-10-14 01:27:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30519 states. [2020-10-14 01:27:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30519 states to 30519 states and 39186 transitions. [2020-10-14 01:27:54,504 INFO L78 Accepts]: Start accepts. Automaton has 30519 states and 39186 transitions. Word has length 1739 [2020-10-14 01:27:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:27:54,504 INFO L479 AbstractCegarLoop]: Abstraction has 30519 states and 39186 transitions. [2020-10-14 01:27:54,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:27:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30519 states and 39186 transitions. [2020-10-14 01:27:54,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2020-10-14 01:27:54,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:27:54,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:27:54,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:27:54,610 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:27:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:27:54,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1978752350, now seen corresponding path program 1 times [2020-10-14 01:27:54,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:27:54,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43030413] [2020-10-14 01:27:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:27:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:27:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:54,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:55,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:27:59,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:27:59,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1765 [2020-10-14 01:27:59,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:27:59,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 01:27:59,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:27:59,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:27:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:27:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 01:27:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:27:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:28:00,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:28:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:28:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:00,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:28:00,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:28:00,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:28:00,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:28:00,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:28:00,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:28:00,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:28:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:28:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:28:00,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:28:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:28:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:28:00,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:00,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:28:00,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:28:00,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:28:00,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:28:00,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:28:00,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:28:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:28:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:28:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:28:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:28:00,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 01:28:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:28:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:00,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:28:00,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:28:00,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:28:00,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 01:28:00,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:28:00,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:28:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:28:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:28:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:28:00,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:28:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:28:01,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43030413] [2020-10-14 01:28:01,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:28:01,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:28:01,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566958626] [2020-10-14 01:28:01,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:28:01,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:28:01,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:28:01,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:28:01,487 INFO L87 Difference]: Start difference. First operand 30519 states and 39186 transitions. Second operand 7 states. [2020-10-14 01:28:25,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:28:25,932 INFO L93 Difference]: Finished difference Result 61216 states and 78882 transitions. [2020-10-14 01:28:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:28:25,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1739 [2020-10-14 01:28:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:28:26,045 INFO L225 Difference]: With dead ends: 61216 [2020-10-14 01:28:26,046 INFO L226 Difference]: Without dead ends: 30703 [2020-10-14 01:28:26,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:28:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30703 states. [2020-10-14 01:28:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30703 to 30585. [2020-10-14 01:28:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30585 states. [2020-10-14 01:28:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30585 states to 30585 states and 36501 transitions. [2020-10-14 01:28:26,623 INFO L78 Accepts]: Start accepts. Automaton has 30585 states and 36501 transitions. Word has length 1739 [2020-10-14 01:28:26,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:28:26,624 INFO L479 AbstractCegarLoop]: Abstraction has 30585 states and 36501 transitions. [2020-10-14 01:28:26,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:28:26,624 INFO L276 IsEmpty]: Start isEmpty. Operand 30585 states and 36501 transitions. [2020-10-14 01:28:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1750 [2020-10-14 01:28:26,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:28:26,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:28:26,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:28:26,701 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:28:26,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:28:26,702 INFO L82 PathProgramCache]: Analyzing trace with hash -420348350, now seen corresponding path program 1 times [2020-10-14 01:28:26,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:28:26,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577284104] [2020-10-14 01:28:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:28:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:28:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:31,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:28:31,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1777 [2020-10-14 01:28:31,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:28:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-14 01:28:31,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:28:31,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:28:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:28:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 01:28:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:28:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:28:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:28:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:28:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:28:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:28:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:28:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:28:32,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:28:32,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:28:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:28:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:28:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:28:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:28:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:28:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:28:32,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:32,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:28:32,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:28:32,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:28:32,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:28:32,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:28:32,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:28:32,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:28:32,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:28:32,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:28:32,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:28:32,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 01:28:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:28:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:32,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:28:32,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 01:28:32,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:28:32,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:28:32,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:28:32,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:28:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:28:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:28:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 01:28:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:28:32,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 01:28:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:28:32,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:28:32,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:28:32,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:28:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:28:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:28:32,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:28:32,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:28:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:28:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:28:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:28:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:28:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 01:28:34,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577284104] [2020-10-14 01:28:34,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:28:34,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:28:34,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62121514] [2020-10-14 01:28:34,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:28:34,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:28:34,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:28:34,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:28:34,524 INFO L87 Difference]: Start difference. First operand 30585 states and 36501 transitions. Second operand 7 states. [2020-10-14 01:28:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:28:58,066 INFO L93 Difference]: Finished difference Result 92111 states and 115196 transitions. [2020-10-14 01:28:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:28:58,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1749 [2020-10-14 01:28:58,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:28:58,241 INFO L225 Difference]: With dead ends: 92111 [2020-10-14 01:28:58,242 INFO L226 Difference]: Without dead ends: 61532 [2020-10-14 01:28:58,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:28:58,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61532 states. [2020-10-14 01:28:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61532 to 60993. [2020-10-14 01:28:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60993 states. [2020-10-14 01:28:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60993 states to 60993 states and 72741 transitions. [2020-10-14 01:28:59,775 INFO L78 Accepts]: Start accepts. Automaton has 60993 states and 72741 transitions. Word has length 1749 [2020-10-14 01:28:59,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:28:59,776 INFO L479 AbstractCegarLoop]: Abstraction has 60993 states and 72741 transitions. [2020-10-14 01:28:59,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:28:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 60993 states and 72741 transitions. [2020-10-14 01:28:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1769 [2020-10-14 01:28:59,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:28:59,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:28:59,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:28:59,952 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:28:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:28:59,954 INFO L82 PathProgramCache]: Analyzing trace with hash 74551273, now seen corresponding path program 1 times [2020-10-14 01:28:59,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:28:59,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942874584] [2020-10-14 01:28:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:29:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:00,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:05,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:05,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1794 [2020-10-14 01:29:05,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:29:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5215 [2020-10-14 01:29:05,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:05,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:29:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 01:29:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 01:29:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:05,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:29:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:05,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:05,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:29:05,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:29:05,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:05,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:29:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:29:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:29:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:29:05,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:29:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:05,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:05,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:29:05,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:05,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:29:05,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:05,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:05,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:29:05,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:29:05,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:29:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:29:05,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 01:29:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:05,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:05,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 01:29:05,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:05,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 01:29:05,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:05,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:29:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:29:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:29:05,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:29:07,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942874584] [2020-10-14 01:29:07,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:29:07,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:29:07,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432822893] [2020-10-14 01:29:07,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:29:07,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:29:07,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:29:07,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:29:07,686 INFO L87 Difference]: Start difference. First operand 60993 states and 72741 transitions. Second operand 7 states.