/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:26:56,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:26:56,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:26:56,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:26:56,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:26:56,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:26:56,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:26:56,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:26:56,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:26:56,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:26:56,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:26:56,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:26:56,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:26:56,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:26:56,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:26:56,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:26:56,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:26:56,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:26:56,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:26:56,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:26:56,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:26:56,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:26:56,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:26:56,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:26:56,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:26:56,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:26:56,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:26:56,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:26:56,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:26:56,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:26:56,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:26:56,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:26:56,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:26:56,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:26:56,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:26:56,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:26:56,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:26:56,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:26:56,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:26:56,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:26:56,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:26:56,848 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 04:26:56,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:26:56,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:26:56,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:26:56,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:26:56,872 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:26:56,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:26:56,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:26:56,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:26:56,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:26:56,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:26:56,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:26:56,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:26:56,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:26:56,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:26:56,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:26:56,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:26:56,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:26:56,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:26:56,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:26:56,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:26:56,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:26:56,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:26:56,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:26:56,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:26:56,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:26:56,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:26:56,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:26:56,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:26:56,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:26:56,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:26:57,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:26:57,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:26:57,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:26:57,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:26:57,258 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:26:57,259 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label09.c [2020-10-14 04:26:57,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d295dc641/ba3d938a12084b03860a5fc2728765b8/FLAG872399f81 [2020-10-14 04:26:58,273 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:26:58,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label09.c [2020-10-14 04:26:58,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d295dc641/ba3d938a12084b03860a5fc2728765b8/FLAG872399f81 [2020-10-14 04:26:58,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d295dc641/ba3d938a12084b03860a5fc2728765b8 [2020-10-14 04:26:58,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:26:58,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:26:58,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:26:58,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:26:58,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:26:58,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:26:58" (1/1) ... [2020-10-14 04:26:58,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d15d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:58, skipping insertion in model container [2020-10-14 04:26:58,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:26:58" (1/1) ... [2020-10-14 04:26:58,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:26:59,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:27:01,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:27:01,216 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:27:02,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:27:02,291 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:27:02,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02 WrapperNode [2020-10-14 04:27:02,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:27:02,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:27:02,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:27:02,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:27:02,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02" (1/1) ... [2020-10-14 04:27:02,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02" (1/1) ... [2020-10-14 04:27:02,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02" (1/1) ... [2020-10-14 04:27:02,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02" (1/1) ... [2020-10-14 04:27:02,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02" (1/1) ... [2020-10-14 04:27:02,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02" (1/1) ... [2020-10-14 04:27:02,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02" (1/1) ... [2020-10-14 04:27:03,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:27:03,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:27:03,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:27:03,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:27:03,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02" (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 04:27:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:27:03,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:27:03,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:27:03,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:27:03,107 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:27:03,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:27:03,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:27:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:27:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:27:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:27:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:27:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:27:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:27:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:27:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:27:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:27:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:27:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:27:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:27:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:27:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:27:17,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:27:17,409 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:27:17,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:27:17 BoogieIcfgContainer [2020-10-14 04:27:17,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:27:17,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:27:17,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:27:17,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:27:17,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:26:58" (1/3) ... [2020-10-14 04:27:17,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13326d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:27:17, skipping insertion in model container [2020-10-14 04:27:17,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:27:02" (2/3) ... [2020-10-14 04:27:17,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13326d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:27:17, skipping insertion in model container [2020-10-14 04:27:17,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:27:17" (3/3) ... [2020-10-14 04:27:17,451 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label09.c [2020-10-14 04:27:17,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:27:17,474 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:27:17,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:27:17,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:27:17,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:27:17,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:27:17,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:27:17,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:27:17,532 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:27:17,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:27:17,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:27:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:27:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 04:27:17,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:27:17,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:27:17,604 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:27:17,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:27:17,611 INFO L82 PathProgramCache]: Analyzing trace with hash 498792324, now seen corresponding path program 1 times [2020-10-14 04:27:17,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:27:17,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508653898] [2020-10-14 04:27:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:27:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:17,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:18,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 04:27:18,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-14 04:27:18,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:18,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:27:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:27:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 04:27:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:27:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:27:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:18,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:18,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:27:18,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:27:18,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:18,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:18,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:18,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:18,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:27:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:27:18,597 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 04:27:18,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508653898] [2020-10-14 04:27:18,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:27:18,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:27:18,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110452852] [2020-10-14 04:27:18,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:27:18,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:27:18,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:27:18,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:27:18,634 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:27:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:27:46,349 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 04:27:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:27:46,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-14 04:27:46,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:27:46,400 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 04:27:46,400 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 04:27:46,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 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 04:27:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 04:27:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 04:27:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 04:27:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 04:27:46,687 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 55 [2020-10-14 04:27:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:27:46,690 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 04:27:46,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:27:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 04:27:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 04:27:46,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:27:46,710 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, 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 04:27:46,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:27:46,712 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:27:46,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:27:46,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1268700669, now seen corresponding path program 1 times [2020-10-14 04:27:46,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:27:46,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215025345] [2020-10-14 04:27:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:27:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:47,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:49,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:49,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:49,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:27:49,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:27:49,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2649 [2020-10-14 04:27:49,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:49,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:27:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:27:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:27:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:27:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:49,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:49,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:27:49,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:27:49,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:49,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:27:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:27:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:27:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:27:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:49,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:27:49,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 04:27:49,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:49,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 04:27:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:27:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:27:49,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215025345] [2020-10-14 04:27:49,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:27:49,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:27:49,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803041818] [2020-10-14 04:27:49,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:27:49,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:27:49,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:27:49,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:27:49,820 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 5 states. [2020-10-14 04:28:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:28:32,557 INFO L93 Difference]: Finished difference Result 9218 states and 14512 transitions. [2020-10-14 04:28:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:28:32,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 04:28:32,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:28:32,602 INFO L225 Difference]: With dead ends: 9218 [2020-10-14 04:28:32,602 INFO L226 Difference]: Without dead ends: 6040 [2020-10-14 04:28:32,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:28:32,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2020-10-14 04:28:32,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6024. [2020-10-14 04:28:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6024 states. [2020-10-14 04:28:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8357 transitions. [2020-10-14 04:28:32,817 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8357 transitions. Word has length 128 [2020-10-14 04:28:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:28:32,821 INFO L479 AbstractCegarLoop]: Abstraction has 6024 states and 8357 transitions. [2020-10-14 04:28:32,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:28:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8357 transitions. [2020-10-14 04:28:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 04:28:32,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:28:32,841 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, 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 04:28:32,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:28:32,842 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:28:32,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:28:32,843 INFO L82 PathProgramCache]: Analyzing trace with hash -392681663, now seen corresponding path program 1 times [2020-10-14 04:28:32,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:28:32,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877439314] [2020-10-14 04:28:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:28:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:32,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:33,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:33,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:34,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:34,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:28:34,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:28:34,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1680 [2020-10-14 04:28:34,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:34,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:28:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:28:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 04:28:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:28:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:34,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:34,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:34,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:28:34,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:28:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:28:34,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:34,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:28:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:28:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:28:34,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:34,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:28:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:34,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:34,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:28:34,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:28:34,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 04:28:34,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:34,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:34,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:28:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:28:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:28:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:28:35,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877439314] [2020-10-14 04:28:35,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:28:35,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:28:35,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341413847] [2020-10-14 04:28:35,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:28:35,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:28:35,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:28:35,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:28:35,034 INFO L87 Difference]: Start difference. First operand 6024 states and 8357 transitions. Second operand 5 states. [2020-10-14 04:29:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:29:26,587 INFO L93 Difference]: Finished difference Result 14872 states and 21399 transitions. [2020-10-14 04:29:26,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:29:26,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 04:29:26,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:29:26,653 INFO L225 Difference]: With dead ends: 14872 [2020-10-14 04:29:26,654 INFO L226 Difference]: Without dead ends: 8854 [2020-10-14 04:29:26,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:29:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8854 states. [2020-10-14 04:29:26,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8854 to 8845. [2020-10-14 04:29:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8845 states. [2020-10-14 04:29:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8845 states to 8845 states and 11621 transitions. [2020-10-14 04:29:26,961 INFO L78 Accepts]: Start accepts. Automaton has 8845 states and 11621 transitions. Word has length 128 [2020-10-14 04:29:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:29:26,964 INFO L479 AbstractCegarLoop]: Abstraction has 8845 states and 11621 transitions. [2020-10-14 04:29:26,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:29:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 8845 states and 11621 transitions. [2020-10-14 04:29:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 04:29:26,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:29:26,969 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, 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] [2020-10-14 04:29:26,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:29:26,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:29:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:29:26,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1133397178, now seen corresponding path program 1 times [2020-10-14 04:29:26,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:29:26,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126663179] [2020-10-14 04:29:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:29:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:27,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:28,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:28,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 04:29:28,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:29:28,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-10-14 04:29:28,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:28,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:28,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:29:28,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:29:28,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 04:29:28,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:29:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:29:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:28,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:28,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:29:28,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:29:28,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:28,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:29:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:29:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:29:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:29:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:29:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:28,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:28,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:29:28,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:28,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 04:29:28,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:28,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:29:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:29:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:29:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:29:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:29:28,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126663179] [2020-10-14 04:29:28,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:29:28,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:29:28,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513753113] [2020-10-14 04:29:28,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:29:28,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:29:28,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:29:28,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:29:28,400 INFO L87 Difference]: Start difference. First operand 8845 states and 11621 transitions. Second operand 5 states. [2020-10-14 04:30:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:30:29,540 INFO L93 Difference]: Finished difference Result 26193 states and 34875 transitions. [2020-10-14 04:30:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:30:29,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-14 04:30:29,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:30:29,621 INFO L225 Difference]: With dead ends: 26193 [2020-10-14 04:30:29,622 INFO L226 Difference]: Without dead ends: 17354 [2020-10-14 04:30:29,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:30:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17354 states. [2020-10-14 04:30:30,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17354 to 17307. [2020-10-14 04:30:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17307 states. [2020-10-14 04:30:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17307 states to 17307 states and 21486 transitions. [2020-10-14 04:30:30,086 INFO L78 Accepts]: Start accepts. Automaton has 17307 states and 21486 transitions. Word has length 136 [2020-10-14 04:30:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:30:30,089 INFO L479 AbstractCegarLoop]: Abstraction has 17307 states and 21486 transitions. [2020-10-14 04:30:30,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:30:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 17307 states and 21486 transitions. [2020-10-14 04:30:30,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 04:30:30,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:30:30,097 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, 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] [2020-10-14 04:30:30,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:30:30,098 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:30:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:30:30,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1369299056, now seen corresponding path program 1 times [2020-10-14 04:30:30,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:30:30,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867233398] [2020-10-14 04:30:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:30:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:31,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:32,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:32,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 04:30:32,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:30:32,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2001 [2020-10-14 04:30:32,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:32,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:30:32,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:30:32,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 04:30:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:32,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:30:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:32,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:32,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:30:32,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:30:32,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:32,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:30:32,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:32,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:30:32,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:30:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:32,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:32,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:32,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:30:32,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 04:30:32,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:32,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:30:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:30:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:30:32,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867233398] [2020-10-14 04:30:32,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:30:32,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:30:32,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115350042] [2020-10-14 04:30:32,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:30:32,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:30:32,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:30:32,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:30:32,630 INFO L87 Difference]: Start difference. First operand 17307 states and 21486 transitions. Second operand 5 states.