/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem12_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:11:01,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:11:01,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:11:01,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:11:01,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:11:01,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:11:01,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:11:01,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:11:01,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:11:01,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:11:01,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:11:01,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:11:01,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:11:01,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:11:01,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:11:01,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:11:01,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:11:01,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:11:01,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:11:01,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:11:01,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:11:01,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:11:01,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:11:01,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:11:01,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:11:01,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:11:01,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:11:01,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:11:01,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:11:01,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:11:01,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:11:01,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:11:01,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:11:01,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:11:01,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:11:01,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:11:01,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:11:01,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:11:01,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:11:01,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:11:01,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:11:01,780 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 21:11:01,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:11:01,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:11:01,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:11:01,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:11:01,803 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:11:01,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:11:01,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:11:01,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:11:01,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:11:01,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:11:01,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:11:01,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:11:01,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:11:01,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:11:01,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:11:01,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:11:01,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:11:01,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:11:01,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:11:01,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:11:01,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:11:01,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:11:01,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:11:01,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:11:01,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:11:01,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:11:01,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:11:01,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:11:01,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:11:01,808 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:11:02,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:11:02,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:11:02,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:11:02,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:11:02,142 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:11:02,143 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label23.c [2020-10-14 21:11:02,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2266f3866/90cd34ad163846d79c9af7a757618760/FLAG9f29696a4 [2020-10-14 21:11:02,912 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:11:02,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label23.c [2020-10-14 21:11:02,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2266f3866/90cd34ad163846d79c9af7a757618760/FLAG9f29696a4 [2020-10-14 21:11:02,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2266f3866/90cd34ad163846d79c9af7a757618760 [2020-10-14 21:11:03,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:11:03,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:11:03,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:11:03,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:11:03,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:11:03,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:11:02" (1/1) ... [2020-10-14 21:11:03,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:03, skipping insertion in model container [2020-10-14 21:11:03,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:11:02" (1/1) ... [2020-10-14 21:11:03,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:11:03,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:11:04,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:11:04,730 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:11:05,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:11:05,455 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:11:05,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05 WrapperNode [2020-10-14 21:11:05,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:11:05,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:11:05,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:11:05,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:11:05,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05" (1/1) ... [2020-10-14 21:11:05,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05" (1/1) ... [2020-10-14 21:11:05,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05" (1/1) ... [2020-10-14 21:11:05,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05" (1/1) ... [2020-10-14 21:11:05,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05" (1/1) ... [2020-10-14 21:11:05,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05" (1/1) ... [2020-10-14 21:11:05,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05" (1/1) ... [2020-10-14 21:11:05,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:11:05,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:11:05,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:11:05,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:11:05,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05" (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 21:11:05,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:11:05,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:11:05,835 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:11:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:11:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:11:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:11:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:11:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:11:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:11:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:11:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:11:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:11:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:11:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:11:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:11:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:11:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:11:10,537 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:11:10,538 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:11:10,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:11:10 BoogieIcfgContainer [2020-10-14 21:11:10,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:11:10,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:11:10,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:11:10,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:11:10,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:11:02" (1/3) ... [2020-10-14 21:11:10,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f56b8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:11:10, skipping insertion in model container [2020-10-14 21:11:10,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:11:05" (2/3) ... [2020-10-14 21:11:10,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f56b8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:11:10, skipping insertion in model container [2020-10-14 21:11:10,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:11:10" (3/3) ... [2020-10-14 21:11:10,560 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label23.c [2020-10-14 21:11:10,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:11:10,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:11:10,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:11:10,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:11:10,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:11:10,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:11:10,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:11:10,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:11:10,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:11:10,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:11:10,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:11:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:11:10,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 21:11:10,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:10,674 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] [2020-10-14 21:11:10,675 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:10,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2070539302, now seen corresponding path program 1 times [2020-10-14 21:11:10,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:10,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808529141] [2020-10-14 21:11:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:10,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:11,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 21:11:11,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 21:11:11,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:11,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:11:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:11:11,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 21:11:11,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:11:11,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:11,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:11,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:11,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:11:11,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:11,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:11:11,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:11,383 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 21:11:11,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808529141] [2020-10-14 21:11:11,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:11:11,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:11:11,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107103761] [2020-10-14 21:11:11,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:11:11,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:11,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:11:11,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:11:11,416 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:11:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:11:18,893 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:11:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:11:18,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 21:11:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:11:18,952 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:11:18,952 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:11:18,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:11:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:11:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:11:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:11:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2863 transitions. [2020-10-14 21:11:19,219 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2863 transitions. Word has length 41 [2020-10-14 21:11:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:11:19,221 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2863 transitions. [2020-10-14 21:11:19,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:11:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2863 transitions. [2020-10-14 21:11:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 21:11:19,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:19,232 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 21:11:19,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:11:19,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:19,235 INFO L82 PathProgramCache]: Analyzing trace with hash 119524935, now seen corresponding path program 1 times [2020-10-14 21:11:19,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:19,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566009665] [2020-10-14 21:11:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:19,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:20,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:20,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 21:11:20,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:11:20,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-14 21:11:20,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:20,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:11:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:11:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:11:20,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:11:20,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:20,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:20,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:20,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:11:20,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:20,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:20,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:11:20,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:20,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:20,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:20,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:11:20,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:11:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 21:11:20,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:20,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:20,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:11:20,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:11:20,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566009665] [2020-10-14 21:11:20,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:20,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:11:20,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654401201] [2020-10-14 21:11:20,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:11:20,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:20,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:11:20,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:11:20,590 INFO L87 Difference]: Start difference. First operand 1553 states and 2863 transitions. Second operand 6 states. [2020-10-14 21:11:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:11:28,994 INFO L93 Difference]: Finished difference Result 4668 states and 8667 transitions. [2020-10-14 21:11:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:11:28,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-10-14 21:11:28,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:11:29,017 INFO L225 Difference]: With dead ends: 4668 [2020-10-14 21:11:29,018 INFO L226 Difference]: Without dead ends: 3121 [2020-10-14 21:11:29,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:11:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2020-10-14 21:11:29,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3106. [2020-10-14 21:11:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2020-10-14 21:11:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5575 transitions. [2020-10-14 21:11:29,127 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5575 transitions. Word has length 110 [2020-10-14 21:11:29,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:11:29,130 INFO L479 AbstractCegarLoop]: Abstraction has 3106 states and 5575 transitions. [2020-10-14 21:11:29,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:11:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5575 transitions. [2020-10-14 21:11:29,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 21:11:29,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:29,140 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 21:11:29,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:11:29,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:29,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1567221619, now seen corresponding path program 1 times [2020-10-14 21:11:29,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:29,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149965106] [2020-10-14 21:11:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:29,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:29,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:29,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 21:11:29,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 21:11:29,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:29,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:11:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 21:11:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:29,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:29,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:29,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:29,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:11:29,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:29,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:29,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:29,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:29,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:11:29,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:29,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 21:11:29,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:29,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:29,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:29,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:29,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:11:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:11:29,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149965106] [2020-10-14 21:11:29,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:29,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:11:29,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144998609] [2020-10-14 21:11:29,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:11:29,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:29,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:11:29,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:11:29,836 INFO L87 Difference]: Start difference. First operand 3106 states and 5575 transitions. Second operand 6 states. [2020-10-14 21:11:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:11:44,688 INFO L93 Difference]: Finished difference Result 12441 states and 22880 transitions. [2020-10-14 21:11:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:11:44,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-14 21:11:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:11:44,754 INFO L225 Difference]: With dead ends: 12441 [2020-10-14 21:11:44,754 INFO L226 Difference]: Without dead ends: 9341 [2020-10-14 21:11:44,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:11:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2020-10-14 21:11:45,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 9320. [2020-10-14 21:11:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-14 21:11:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 14723 transitions. [2020-10-14 21:11:45,059 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 14723 transitions. Word has length 116 [2020-10-14 21:11:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:11:45,060 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 14723 transitions. [2020-10-14 21:11:45,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:11:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 14723 transitions. [2020-10-14 21:11:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 21:11:45,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:11:45,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-14 21:11:45,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:11:45,069 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:11:45,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:11:45,070 INFO L82 PathProgramCache]: Analyzing trace with hash -502732398, now seen corresponding path program 1 times [2020-10-14 21:11:45,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:11:45,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705031363] [2020-10-14 21:11:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:11:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:46,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:48,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:48,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 21:11:48,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:11:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3873 [2020-10-14 21:11:48,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:48,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 21:11:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:11:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:11:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:11:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:49,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:49,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:11:49,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:49,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:11:49,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:49,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:11:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:11:49,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:11:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:49,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:49,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 21:11:49,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 21:11:49,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:49,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:11:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:11:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:11:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:11:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 21:11:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:11:49,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:11:49,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:11:49,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:11:49,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:11:49,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 21:11:49,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:11:49,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:11:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:11:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:11:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:11:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:11:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:11:49,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705031363] [2020-10-14 21:11:49,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:11:49,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:11:49,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956586023] [2020-10-14 21:11:49,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:11:49,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:11:49,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:11:49,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:11:49,595 INFO L87 Difference]: Start difference. First operand 9320 states and 14723 transitions. Second operand 8 states. [2020-10-14 21:12:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:12:06,343 INFO L93 Difference]: Finished difference Result 28303 states and 46275 transitions. [2020-10-14 21:12:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:12:06,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 233 [2020-10-14 21:12:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:12:06,439 INFO L225 Difference]: With dead ends: 28303 [2020-10-14 21:12:06,439 INFO L226 Difference]: Without dead ends: 18989 [2020-10-14 21:12:06,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:12:06,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18989 states. [2020-10-14 21:12:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18989 to 18910. [2020-10-14 21:12:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18910 states. [2020-10-14 21:12:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18910 states to 18910 states and 26418 transitions. [2020-10-14 21:12:07,020 INFO L78 Accepts]: Start accepts. Automaton has 18910 states and 26418 transitions. Word has length 233 [2020-10-14 21:12:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:12:07,021 INFO L479 AbstractCegarLoop]: Abstraction has 18910 states and 26418 transitions. [2020-10-14 21:12:07,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:12:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 18910 states and 26418 transitions. [2020-10-14 21:12:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-14 21:12:07,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:07,049 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-14 21:12:07,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:12:07,050 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:07,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:07,050 INFO L82 PathProgramCache]: Analyzing trace with hash -802784870, now seen corresponding path program 1 times [2020-10-14 21:12:07,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:07,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646463555] [2020-10-14 21:12:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:08,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:11,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:11,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-14 21:12:11,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:12:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4520 [2020-10-14 21:12:11,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:11,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:11,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 21:12:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-14 21:12:11,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:11,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:12:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:12:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:12:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:11,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:12:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:11,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:12:11,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:11,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:12:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:11,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:11,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:12:11,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:11,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:12:11,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:11,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:11,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:12:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:11,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 21:12:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:12,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:12,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 21:12:12,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 21:12:12,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:12,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:12:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-14 21:12:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:12:12,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646463555] [2020-10-14 21:12:12,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:12:12,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:12:12,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911941667] [2020-10-14 21:12:12,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:12:12,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:12:12,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:12:12,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:12:12,870 INFO L87 Difference]: Start difference. First operand 18910 states and 26418 transitions. Second operand 8 states. [2020-10-14 21:12:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:12:29,062 INFO L93 Difference]: Finished difference Result 38312 states and 54487 transitions. [2020-10-14 21:12:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:12:29,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 403 [2020-10-14 21:12:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:12:29,229 INFO L225 Difference]: With dead ends: 38312 [2020-10-14 21:12:29,229 INFO L226 Difference]: Without dead ends: 19408 [2020-10-14 21:12:29,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:12:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19408 states. [2020-10-14 21:12:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19408 to 19329. [2020-10-14 21:12:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19329 states. [2020-10-14 21:12:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19329 states to 19329 states and 25305 transitions. [2020-10-14 21:12:29,728 INFO L78 Accepts]: Start accepts. Automaton has 19329 states and 25305 transitions. Word has length 403 [2020-10-14 21:12:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:12:29,728 INFO L479 AbstractCegarLoop]: Abstraction has 19329 states and 25305 transitions. [2020-10-14 21:12:29,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:12:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 19329 states and 25305 transitions. [2020-10-14 21:12:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-14 21:12:29,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:29,753 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2020-10-14 21:12:29,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:12:29,753 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:29,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:29,753 INFO L82 PathProgramCache]: Analyzing trace with hash -116392698, now seen corresponding path program 1 times [2020-10-14 21:12:29,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:29,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268593965] [2020-10-14 21:12:29,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:30,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:34,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:34,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-14 21:12:34,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:12:34,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4337 [2020-10-14 21:12:34,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:34,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 21:12:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-14 21:12:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:12:34,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:12:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:34,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:34,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:34,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:12:34,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:12:34,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:34,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:12:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:12:34,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:34,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:12:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:34,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:34,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:34,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:12:34,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:34,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 21:12:34,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:34,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:12:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:12:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:12:34,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:34,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 21:12:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:35,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:35,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 21:12:35,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:12:35,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-14 21:12:35,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:35,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:12:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-14 21:12:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:12:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:12:35,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268593965] [2020-10-14 21:12:35,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:12:35,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:12:35,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604198391] [2020-10-14 21:12:35,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:12:35,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:12:35,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:12:35,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:12:35,697 INFO L87 Difference]: Start difference. First operand 19329 states and 25305 transitions. Second operand 7 states. [2020-10-14 21:12:53,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:12:53,588 INFO L93 Difference]: Finished difference Result 57065 states and 83846 transitions. [2020-10-14 21:12:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:12:53,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-14 21:12:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:12:53,768 INFO L225 Difference]: With dead ends: 57065 [2020-10-14 21:12:53,768 INFO L226 Difference]: Without dead ends: 37742 [2020-10-14 21:12:53,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:12:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37742 states. [2020-10-14 21:12:54,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37742 to 36322. [2020-10-14 21:12:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36322 states. [2020-10-14 21:12:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36322 states to 36322 states and 46343 transitions. [2020-10-14 21:12:54,803 INFO L78 Accepts]: Start accepts. Automaton has 36322 states and 46343 transitions. Word has length 429 [2020-10-14 21:12:54,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:12:54,804 INFO L479 AbstractCegarLoop]: Abstraction has 36322 states and 46343 transitions. [2020-10-14 21:12:54,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:12:54,804 INFO L276 IsEmpty]: Start isEmpty. Operand 36322 states and 46343 transitions. [2020-10-14 21:12:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-14 21:12:54,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:12:54,846 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:54,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:12:54,847 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:12:54,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:12:54,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1437501974, now seen corresponding path program 1 times [2020-10-14 21:12:54,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:12:54,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450261197] [2020-10-14 21:12:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:12:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:12:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:12:59,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:12:59,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-14 21:12:59,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:12:59,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 21:12:59,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:12:59,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:12:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:12:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 21:12:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-14 21:12:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:13:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:00,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:00,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:00,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:13:00,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:00,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:13:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:13:00,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:00,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:00,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:00,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:13:00,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 21:13:00,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:00,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:13:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:13:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:13:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:00,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:00,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:00,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:13:00,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:00,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 21:13:00,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:00,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:13:00,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:00,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 21:13:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:00,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:00,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 21:13:00,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-14 21:13:00,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:00,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:13:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:13:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-14 21:13:00,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 21:13:01,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450261197] [2020-10-14 21:13:01,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:13:01,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:13:01,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128709261] [2020-10-14 21:13:01,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:13:01,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:01,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:13:01,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:13:01,338 INFO L87 Difference]: Start difference. First operand 36322 states and 46343 transitions. Second operand 7 states. [2020-10-14 21:13:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:20,270 INFO L93 Difference]: Finished difference Result 91656 states and 126210 transitions. [2020-10-14 21:13:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:13:20,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 487 [2020-10-14 21:13:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:20,554 INFO L225 Difference]: With dead ends: 91656 [2020-10-14 21:13:20,554 INFO L226 Difference]: Without dead ends: 55340 [2020-10-14 21:13:20,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:13:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55340 states. [2020-10-14 21:13:23,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55340 to 52477. [2020-10-14 21:13:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52477 states. [2020-10-14 21:13:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52477 states to 52477 states and 67707 transitions. [2020-10-14 21:13:23,789 INFO L78 Accepts]: Start accepts. Automaton has 52477 states and 67707 transitions. Word has length 487 [2020-10-14 21:13:23,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:23,790 INFO L479 AbstractCegarLoop]: Abstraction has 52477 states and 67707 transitions. [2020-10-14 21:13:23,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:13:23,790 INFO L276 IsEmpty]: Start isEmpty. Operand 52477 states and 67707 transitions. [2020-10-14 21:13:23,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-14 21:13:23,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:23,852 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-14 21:13:23,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:13:23,852 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:23,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:23,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1208715534, now seen corresponding path program 1 times [2020-10-14 21:13:23,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:23,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849382765] [2020-10-14 21:13:23,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:25,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:28,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:28,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-14 21:13:28,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:13:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 21:13:28,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:28,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:13:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 21:13:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 368 [2020-10-14 21:13:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:29,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:29,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:29,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:29,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:13:29,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:29,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:13:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:13:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:13:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:29,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:29,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 21:13:29,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:29,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 21:13:29,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:29,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:13:29,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:29,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 21:13:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:29,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:29,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:13:29,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:13:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 21:13:29,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:29,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:13:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-14 21:13:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:29,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 21:13:29,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-14 21:13:29,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:29,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:13:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:13:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-14 21:13:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:13:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 291 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:13:30,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849382765] [2020-10-14 21:13:30,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:13:30,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:13:30,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054421317] [2020-10-14 21:13:30,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:13:30,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:30,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:13:30,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:13:30,146 INFO L87 Difference]: Start difference. First operand 52477 states and 67707 transitions. Second operand 7 states. [2020-10-14 21:13:53,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:53,188 INFO L93 Difference]: Finished difference Result 129027 states and 183222 transitions. [2020-10-14 21:13:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:13:53,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 521 [2020-10-14 21:13:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:53,568 INFO L225 Difference]: With dead ends: 129027 [2020-10-14 21:13:53,568 INFO L226 Difference]: Without dead ends: 77433 [2020-10-14 21:13:53,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:13:53,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77433 states. [2020-10-14 21:13:55,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77433 to 68343. [2020-10-14 21:13:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68343 states. [2020-10-14 21:13:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68343 states to 68343 states and 87807 transitions. [2020-10-14 21:13:55,529 INFO L78 Accepts]: Start accepts. Automaton has 68343 states and 87807 transitions. Word has length 521 [2020-10-14 21:13:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:55,530 INFO L479 AbstractCegarLoop]: Abstraction has 68343 states and 87807 transitions. [2020-10-14 21:13:55,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:13:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 68343 states and 87807 transitions. [2020-10-14 21:13:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2020-10-14 21:13:55,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:55,591 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:55,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:13:55,591 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:55,592 INFO L82 PathProgramCache]: Analyzing trace with hash 950909971, now seen corresponding path program 1 times [2020-10-14 21:13:55,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:55,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470821843] [2020-10-14 21:13:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:56,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:57,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:00,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:00,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 640 [2020-10-14 21:14:00,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:14:00,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 21:14:00,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:00,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:00,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:14:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-14 21:14:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:00,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:00,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:00,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:00,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:14:00,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:00,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:00,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:00,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 21:14:00,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:00,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:14:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:00,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:14:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:01,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:01,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:01,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 21:14:01,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 21:14:01,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:01,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 21:14:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-14 21:14:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:01,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 21:14:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 21:14:01,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:01,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 21:14:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-10-14 21:14:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:01,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 21:14:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 21:14:01,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:01,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:14:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 283 [2020-10-14 21:14:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:14:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 287 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-14 21:14:01,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470821843] [2020-10-14 21:14:01,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:01,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:14:01,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977002587] [2020-10-14 21:14:01,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:01,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:01,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:01,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:01,858 INFO L87 Difference]: Start difference. First operand 68343 states and 87807 transitions. Second operand 7 states. [2020-10-14 21:14:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:21,426 INFO L93 Difference]: Finished difference Result 187235 states and 249989 transitions. [2020-10-14 21:14:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:14:21,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 624 [2020-10-14 21:14:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:24,016 INFO L225 Difference]: With dead ends: 187235 [2020-10-14 21:14:24,016 INFO L226 Difference]: Without dead ends: 118902 [2020-10-14 21:14:24,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:14:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118902 states. [2020-10-14 21:14:25,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118902 to 102483. [2020-10-14 21:14:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102483 states. [2020-10-14 21:14:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102483 states to 102483 states and 130468 transitions. [2020-10-14 21:14:25,478 INFO L78 Accepts]: Start accepts. Automaton has 102483 states and 130468 transitions. Word has length 624 [2020-10-14 21:14:25,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:25,478 INFO L479 AbstractCegarLoop]: Abstraction has 102483 states and 130468 transitions. [2020-10-14 21:14:25,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:25,478 INFO L276 IsEmpty]: Start isEmpty. Operand 102483 states and 130468 transitions. [2020-10-14 21:14:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2020-10-14 21:14:25,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:25,535 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:25,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:14:25,536 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:25,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1412562924, now seen corresponding path program 1 times [2020-10-14 21:14:25,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:25,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676574278] [2020-10-14 21:14:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:30,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:30,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-14 21:14:30,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:14:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 21:14:30,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:30,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 21:14:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 373 [2020-10-14 21:14:30,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:30,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:30,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:30,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:30,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:14:30,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:30,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:14:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:14:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:30,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:30,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:14:30,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:30,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 21:14:30,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:30,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:14:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:30,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 21:14:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:30,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:31,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:31,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-14 21:14:31,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-14 21:14:31,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:31,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 374 [2020-10-14 21:14:31,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:31,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:14:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:31,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:31,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:14:31,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:31,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 21:14:31,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:31,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:14:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:14:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:31,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-10-14 21:14:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:31,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:31,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:31,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:14:31,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:14:31,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:31,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:14:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 21:14:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:14:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 224 proven. 107 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 21:14:32,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676574278] [2020-10-14 21:14:32,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:32,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:14:32,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964780239] [2020-10-14 21:14:32,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:14:32,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:32,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:14:32,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:14:32,059 INFO L87 Difference]: Start difference. First operand 102483 states and 130468 transitions. Second operand 8 states.