/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:17:00,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:17:00,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:17:00,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:17:00,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:17:00,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:17:00,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:17:00,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:17:00,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:17:00,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:17:00,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:17:00,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:17:00,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:17:00,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:17:00,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:17:00,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:17:00,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:17:00,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:17:00,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:17:00,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:17:00,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:17:00,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:17:00,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:17:00,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:17:00,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:17:00,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:17:00,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:17:00,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:17:00,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:17:00,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:17:00,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:17:00,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:17:00,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:17:00,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:17:00,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:17:00,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:17:00,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:17:00,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:17:00,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:17:00,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:17:00,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:17:00,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 01:17:00,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:17:00,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:17:00,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:17:00,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:17:00,591 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:17:00,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:17:00,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:17:00,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:17:00,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:17:00,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:17:00,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:17:00,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:17:00,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:17:00,594 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:17:00,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:17:00,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:17:00,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:17:00,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:17:00,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:17:00,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:17:00,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:17:00,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:17:00,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:17:00,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:17:00,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:17:00,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:17:00,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:17:00,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:17:00,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:17:00,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:17:00,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:17:00,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:17:00,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:17:00,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:17:00,885 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:17:00,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label18.c [2020-10-14 01:17:00,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01830d6ec/f1f9800c92ab44279002e9669cc915fc/FLAG5a1a8cc16 [2020-10-14 01:17:01,736 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:17:01,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label18.c [2020-10-14 01:17:01,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01830d6ec/f1f9800c92ab44279002e9669cc915fc/FLAG5a1a8cc16 [2020-10-14 01:17:02,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01830d6ec/f1f9800c92ab44279002e9669cc915fc [2020-10-14 01:17:02,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:17:02,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:17:02,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:17:02,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:17:02,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:17:02,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:17:02" (1/1) ... [2020-10-14 01:17:02,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:02, skipping insertion in model container [2020-10-14 01:17:02,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:17:02" (1/1) ... [2020-10-14 01:17:02,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:17:02,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:17:04,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:17:04,993 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:17:06,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:17:06,306 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:17:06,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06 WrapperNode [2020-10-14 01:17:06,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:17:06,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:17:06,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:17:06,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:17:06,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06" (1/1) ... [2020-10-14 01:17:06,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06" (1/1) ... [2020-10-14 01:17:06,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06" (1/1) ... [2020-10-14 01:17:06,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06" (1/1) ... [2020-10-14 01:17:06,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06" (1/1) ... [2020-10-14 01:17:06,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06" (1/1) ... [2020-10-14 01:17:06,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06" (1/1) ... [2020-10-14 01:17:06,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:17:06,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:17:06,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:17:06,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:17:06,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:17:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:17:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:17:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:17:06,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:17:06,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:17:06,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:17:06,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:17:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 01:17:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 01:17:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 01:17:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:17:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:17:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:17:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:17:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:17:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:17:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 01:17:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 01:17:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 01:17:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:17:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:17:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:17:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:17:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:17:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:17:14,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:17:14,888 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:17:14,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:17:14 BoogieIcfgContainer [2020-10-14 01:17:14,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:17:14,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:17:14,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:17:14,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:17:14,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:17:02" (1/3) ... [2020-10-14 01:17:14,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e555615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:17:14, skipping insertion in model container [2020-10-14 01:17:14,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:06" (2/3) ... [2020-10-14 01:17:14,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e555615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:17:14, skipping insertion in model container [2020-10-14 01:17:14,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:17:14" (3/3) ... [2020-10-14 01:17:14,916 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label18.c [2020-10-14 01:17:14,926 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:17:14,936 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:17:14,949 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:17:14,980 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:17:14,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:17:14,981 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:17:14,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:17:14,981 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:17:14,981 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:17:14,981 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:17:14,981 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:17:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 01:17:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1663 [2020-10-14 01:17:15,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:17:15,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:17:15,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:17:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:17:15,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2012726847, now seen corresponding path program 1 times [2020-10-14 01:17:15,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:17:15,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547940869] [2020-10-14 01:17:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:17:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:21,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:21,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1684 [2020-10-14 01:17:21,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:17:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5162 [2020-10-14 01:17:21,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:21,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 01:17:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:17:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1678 [2020-10-14 01:17:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:17:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:17:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:22,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:22,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:17:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:17:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:17:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:22,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:17:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:17:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:17:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:17:25,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547940869] [2020-10-14 01:17:25,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:17:25,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:17:25,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435789264] [2020-10-14 01:17:25,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:17:25,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:17:25,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:17:25,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:17:25,060 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-14 01:17:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:17:40,778 INFO L93 Difference]: Finished difference Result 6310 states and 11850 transitions. [2020-10-14 01:17:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:17:40,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1662 [2020-10-14 01:17:40,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:17:40,835 INFO L225 Difference]: With dead ends: 6310 [2020-10-14 01:17:40,836 INFO L226 Difference]: Without dead ends: 4024 [2020-10-14 01:17:40,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:17:40,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-10-14 01:17:41,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997. [2020-10-14 01:17:41,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-14 01:17:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions. [2020-10-14 01:17:41,047 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1662 [2020-10-14 01:17:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:17:41,051 INFO L479 AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions. [2020-10-14 01:17:41,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:17:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions. [2020-10-14 01:17:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2020-10-14 01:17:41,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:17:41,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:17:41,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:17:41,268 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:17:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:17:41,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1402496074, now seen corresponding path program 1 times [2020-10-14 01:17:41,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:17:41,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439103040] [2020-10-14 01:17:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:17:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:41,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:46,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:46,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1695 [2020-10-14 01:17:46,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:17:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-14 01:17:46,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:46,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:17:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:17:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:17:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:48,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:17:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:48,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:48,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:17:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:17:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:17:48,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:48,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:17:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:17:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:17:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:48,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:17:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:17:48,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:17:48,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:17:48,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:17:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:17:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:17:48,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:17:48,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:17:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:17:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:17:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:17:48,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:17:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:17:49,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439103040] [2020-10-14 01:17:49,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:17:49,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:17:49,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550184685] [2020-10-14 01:17:49,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:17:49,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:17:49,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:17:49,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:17:49,649 INFO L87 Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 7 states. [2020-10-14 01:18:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:18:09,553 INFO L93 Difference]: Finished difference Result 11777 states and 19104 transitions. [2020-10-14 01:18:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:18:09,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1671 [2020-10-14 01:18:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:18:09,598 INFO L225 Difference]: With dead ends: 11777 [2020-10-14 01:18:09,598 INFO L226 Difference]: Without dead ends: 7786 [2020-10-14 01:18:09,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 01:18:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7786 states. [2020-10-14 01:18:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7786 to 7656. [2020-10-14 01:18:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7656 states. [2020-10-14 01:18:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 11198 transitions. [2020-10-14 01:18:09,796 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 11198 transitions. Word has length 1671 [2020-10-14 01:18:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:18:09,797 INFO L479 AbstractCegarLoop]: Abstraction has 7656 states and 11198 transitions. [2020-10-14 01:18:09,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:18:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 11198 transitions. [2020-10-14 01:18:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1674 [2020-10-14 01:18:09,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:18:09,939 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:18:09,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:18:09,940 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:18:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:18:09,941 INFO L82 PathProgramCache]: Analyzing trace with hash 363945618, now seen corresponding path program 1 times [2020-10-14 01:18:09,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:18:09,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508022510] [2020-10-14 01:18:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:18:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:10,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:15,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1697 [2020-10-14 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-14 01:18:15,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:15,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:18:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:18:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:18:15,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:18:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:18:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:15,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:15,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:15,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:18:15,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:18:15,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:15,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:15,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:18:15,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:18:15,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:18:15,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:18:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:18:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:15,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:15,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 01:18:15,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:18:15,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:15,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:18:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:18:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:18:15,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:18:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:18:16,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508022510] [2020-10-14 01:18:16,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:18:16,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:18:16,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361203912] [2020-10-14 01:18:16,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:18:16,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:18:16,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:18:16,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:18:16,998 INFO L87 Difference]: Start difference. First operand 7656 states and 11198 transitions. Second operand 7 states. [2020-10-14 01:18:38,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:18:38,609 INFO L93 Difference]: Finished difference Result 22887 states and 34046 transitions. [2020-10-14 01:18:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:18:38,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1673 [2020-10-14 01:18:38,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:18:38,672 INFO L225 Difference]: With dead ends: 22887 [2020-10-14 01:18:38,672 INFO L226 Difference]: Without dead ends: 15237 [2020-10-14 01:18:38,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:18:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15237 states. [2020-10-14 01:18:39,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15237 to 15032. [2020-10-14 01:18:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15032 states. [2020-10-14 01:18:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15032 states to 15032 states and 19517 transitions. [2020-10-14 01:18:39,048 INFO L78 Accepts]: Start accepts. Automaton has 15032 states and 19517 transitions. Word has length 1673 [2020-10-14 01:18:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:18:39,049 INFO L479 AbstractCegarLoop]: Abstraction has 15032 states and 19517 transitions. [2020-10-14 01:18:39,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:18:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 15032 states and 19517 transitions. [2020-10-14 01:18:39,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2020-10-14 01:18:39,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:18:39,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:18:39,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:18:39,115 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:18:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:18:39,116 INFO L82 PathProgramCache]: Analyzing trace with hash -107243806, now seen corresponding path program 1 times [2020-10-14 01:18:39,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:18:39,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759023193] [2020-10-14 01:18:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:18:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:39,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:44,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:44,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1708 [2020-10-14 01:18:44,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:18:44,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5164 [2020-10-14 01:18:44,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:44,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:18:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:18:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 01:18:44,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:18:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:18:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:45,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:45,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:18:45,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:45,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:18:45,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:45,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:18:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:18:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:18:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:18:45,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:18:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:18:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:18:45,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:18:45,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:18:45,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:18:45,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:18:45,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:18:45,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:18:45,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:18:45,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:18:45,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:18:45,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:18:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:18:46,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759023193] [2020-10-14 01:18:46,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:18:46,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:18:46,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689450816] [2020-10-14 01:18:46,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:18:46,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:18:46,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:18:46,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:18:46,222 INFO L87 Difference]: Start difference. First operand 15032 states and 19517 transitions. Second operand 7 states. [2020-10-14 01:19:07,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:19:07,851 INFO L93 Difference]: Finished difference Result 43246 states and 57700 transitions. [2020-10-14 01:19:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:19:07,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1684 [2020-10-14 01:19:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:19:07,936 INFO L225 Difference]: With dead ends: 43246 [2020-10-14 01:19:07,936 INFO L226 Difference]: Without dead ends: 28220 [2020-10-14 01:19:07,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:19:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28220 states. [2020-10-14 01:19:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28220 to 26178. [2020-10-14 01:19:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26178 states. [2020-10-14 01:19:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26178 states to 26178 states and 31889 transitions. [2020-10-14 01:19:08,540 INFO L78 Accepts]: Start accepts. Automaton has 26178 states and 31889 transitions. Word has length 1684 [2020-10-14 01:19:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:19:08,541 INFO L479 AbstractCegarLoop]: Abstraction has 26178 states and 31889 transitions. [2020-10-14 01:19:08,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:19:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand 26178 states and 31889 transitions. [2020-10-14 01:19:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1798 [2020-10-14 01:19:08,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:19:08,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:19:08,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:19:08,638 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:19:08,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:19:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash -418751135, now seen corresponding path program 1 times [2020-10-14 01:19:08,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:19:08,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571997382] [2020-10-14 01:19:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:19:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:09,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:14,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:14,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1823 [2020-10-14 01:19:14,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:19:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-14 01:19:14,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:14,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:19:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 01:19:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 01:19:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:19:14,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:19:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:14,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:14,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:19:14,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:14,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:19:14,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:14,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:19:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:19:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:19:14,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:19:14,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:19:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:14,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:14,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 01:19:14,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 01:19:14,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:14,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:19:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:19:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 01:19:14,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:19:14,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 01:19:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:14,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:14,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 01:19:14,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:14,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 01:19:14,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:14,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:19:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:19:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:19:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:19:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:19:16,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571997382] [2020-10-14 01:19:16,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:19:16,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:19:16,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581988043] [2020-10-14 01:19:16,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:19:16,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:19:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:19:16,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:19:16,026 INFO L87 Difference]: Start difference. First operand 26178 states and 31889 transitions. Second operand 7 states. [2020-10-14 01:19:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:19:41,078 INFO L93 Difference]: Finished difference Result 68670 states and 88056 transitions. [2020-10-14 01:19:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:19:41,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1797 [2020-10-14 01:19:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:19:41,190 INFO L225 Difference]: With dead ends: 68670 [2020-10-14 01:19:41,190 INFO L226 Difference]: Without dead ends: 42498 [2020-10-14 01:19:41,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:19:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42498 states. [2020-10-14 01:19:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42498 to 40239. [2020-10-14 01:19:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40239 states. [2020-10-14 01:19:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40239 states to 40239 states and 49986 transitions. [2020-10-14 01:19:42,068 INFO L78 Accepts]: Start accepts. Automaton has 40239 states and 49986 transitions. Word has length 1797 [2020-10-14 01:19:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:19:42,069 INFO L479 AbstractCegarLoop]: Abstraction has 40239 states and 49986 transitions. [2020-10-14 01:19:42,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:19:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 40239 states and 49986 transitions. [2020-10-14 01:19:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2020-10-14 01:19:42,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:19:42,202 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:19:42,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:19:42,203 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:19:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:19:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash 795721455, now seen corresponding path program 1 times [2020-10-14 01:19:42,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:19:42,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092751820] [2020-10-14 01:19:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:19:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:43,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:47,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:47,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1853 [2020-10-14 01:19:47,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:19:47,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5244 [2020-10-14 01:19:47,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:47,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:47,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:19:47,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-14 01:19:47,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:19:47,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:19:48,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:19:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:48,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:48,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:19:48,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:19:48,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:48,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:19:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:19:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:19:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:19:48,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:19:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:48,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:48,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:48,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 01:19:48,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:48,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 01:19:48,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:48,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:19:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:19:48,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:19:48,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:19:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 01:19:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:48,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:48,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:48,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 01:19:48,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:19:48,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:48,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:19:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:19:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 01:19:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:19:48,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 01:19:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:19:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:19:48,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:19:48,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 01:19:48,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:19:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:19:48,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:19:48,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:19:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:19:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:19:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 01:19:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:19:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 01:19:49,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092751820] [2020-10-14 01:19:49,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:19:49,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:19:49,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696827443] [2020-10-14 01:19:49,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:19:49,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:19:49,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:19:49,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:19:49,716 INFO L87 Difference]: Start difference. First operand 40239 states and 49986 transitions. Second operand 8 states. [2020-10-14 01:20:13,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:20:13,595 INFO L93 Difference]: Finished difference Result 104424 states and 135909 transitions. [2020-10-14 01:20:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:20:13,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1825 [2020-10-14 01:20:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:20:13,786 INFO L225 Difference]: With dead ends: 104424 [2020-10-14 01:20:13,787 INFO L226 Difference]: Without dead ends: 64191 [2020-10-14 01:20:13,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:20:13,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64191 states. [2020-10-14 01:20:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64191 to 58301. [2020-10-14 01:20:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58301 states. [2020-10-14 01:20:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58301 states to 58301 states and 75980 transitions. [2020-10-14 01:20:15,038 INFO L78 Accepts]: Start accepts. Automaton has 58301 states and 75980 transitions. Word has length 1825 [2020-10-14 01:20:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:20:15,039 INFO L479 AbstractCegarLoop]: Abstraction has 58301 states and 75980 transitions. [2020-10-14 01:20:15,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:20:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 58301 states and 75980 transitions. [2020-10-14 01:20:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1831 [2020-10-14 01:20:15,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:20:15,177 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:20:15,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:20:15,177 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:20:15,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:20:15,178 INFO L82 PathProgramCache]: Analyzing trace with hash -212381058, now seen corresponding path program 1 times [2020-10-14 01:20:15,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:20:15,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867963611] [2020-10-14 01:20:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:20:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:15,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:20,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:20,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1858 [2020-10-14 01:20:20,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:20:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-14 01:20:20,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:20,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:20:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-14 01:20:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:20:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:20:20,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:20:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:20,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:20,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:20:20,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:20,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:20:20,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:20,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:20:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:20:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:20:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:20:20,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:20:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:20,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:20,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 01:20:20,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 01:20:20,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:20,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:20:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:20:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:20:20,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:20:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 01:20:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:20,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:20,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 01:20:20,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:20:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 01:20:20,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:20,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:20:20,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:20:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 01:20:20,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:20:20,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 01:20:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:20:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:20,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:20:20,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:20:20,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:20:20,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:20:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:20:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:20:20,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:20:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:20:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:20:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:20:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:20:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 01:20:22,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867963611] [2020-10-14 01:20:22,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:20:22,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:20:22,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886120415] [2020-10-14 01:20:22,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:20:22,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:20:22,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:20:22,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:20:22,519 INFO L87 Difference]: Start difference. First operand 58301 states and 75980 transitions. Second operand 7 states.