/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=NARROWEST --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/Problem18_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:55:44,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:55:44,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:55:44,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:55:44,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:55:44,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:55:44,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:55:44,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:55:44,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:55:44,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:55:44,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:55:44,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:55:44,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:55:44,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:55:44,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:55:44,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:55:44,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:55:44,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:55:44,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:55:44,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:55:44,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:55:44,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:55:44,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:55:44,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:55:44,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:55:44,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:55:44,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:55:44,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:55:44,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:55:44,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:55:44,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:55:44,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:55:44,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:55:44,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:55:44,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:55:44,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:55:44,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:55:44,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:55:44,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:55:44,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:55:44,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:55:44,843 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 [2020-10-13 09:55:44,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:55:44,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:55:44,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:55:44,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:55:44,867 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:55:44,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:55:44,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:55:44,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:55:44,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:55:44,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:55:44,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:55:44,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:55:44,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:55:44,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:55:44,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:55:44,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:55:44,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:55:44,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:55:44,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:55:44,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:55:44,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:55:44,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:55:44,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:55:44,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:55:44,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:55:44,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:55:44,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:55:44,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:55:44,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:55:44,871 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:55:45,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:55:45,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:55:45,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:55:45,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:55:45,225 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:55:45,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label55.c [2020-10-13 09:55:45,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/794176f53/737dacb3dcbc4f789c78b888d944ee88/FLAGe31d75fa4 [2020-10-13 09:55:46,021 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:55:46,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label55.c [2020-10-13 09:55:46,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/794176f53/737dacb3dcbc4f789c78b888d944ee88/FLAGe31d75fa4 [2020-10-13 09:55:46,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/794176f53/737dacb3dcbc4f789c78b888d944ee88 [2020-10-13 09:55:46,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:55:46,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:55:46,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:55:46,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:55:46,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:55:46,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:55:46" (1/1) ... [2020-10-13 09:55:46,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:46, skipping insertion in model container [2020-10-13 09:55:46,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:55:46" (1/1) ... [2020-10-13 09:55:46,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:55:46,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:55:47,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:55:47,841 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:55:48,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:55:48,314 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:55:48,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48 WrapperNode [2020-10-13 09:55:48,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:55:48,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:55:48,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:55:48,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:55:48,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48" (1/1) ... [2020-10-13 09:55:48,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48" (1/1) ... [2020-10-13 09:55:48,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48" (1/1) ... [2020-10-13 09:55:48,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48" (1/1) ... [2020-10-13 09:55:48,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48" (1/1) ... [2020-10-13 09:55:48,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48" (1/1) ... [2020-10-13 09:55:48,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48" (1/1) ... [2020-10-13 09:55:48,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:55:48,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:55:48,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:55:48,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:55:48,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48" (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 [2020-10-13 09:55:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:55:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:55:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:55:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:55:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:55:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:55:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:55:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:55:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:55:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:55:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:55:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:55:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:55:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:55:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:55:54,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:55:54,888 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:55:54,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:55:54 BoogieIcfgContainer [2020-10-13 09:55:54,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:55:54,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:55:54,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:55:54,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:55:54,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:55:46" (1/3) ... [2020-10-13 09:55:54,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5243ac21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:55:54, skipping insertion in model container [2020-10-13 09:55:54,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:55:48" (2/3) ... [2020-10-13 09:55:54,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5243ac21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:55:54, skipping insertion in model container [2020-10-13 09:55:54,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:55:54" (3/3) ... [2020-10-13 09:55:54,918 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label55.c [2020-10-13 09:55:54,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:55:54,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:55:54,960 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:55:54,995 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:55:54,995 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:55:54,996 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:55:54,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:55:54,996 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:55:54,996 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:55:54,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:55:54,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:55:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:55:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 09:55:55,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:55:55,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:55:55,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:55:55,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:55:55,067 INFO L82 PathProgramCache]: Analyzing trace with hash 184890441, now seen corresponding path program 1 times [2020-10-13 09:55:55,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:55:55,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981922620] [2020-10-13 09:55:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:55:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:55,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:55,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 09:55:55,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-13 09:55:55,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:55:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:55:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:55:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:55:55,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:55:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:55:55,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:55:55,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:55:55,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:55:55,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:55:55,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:55:55,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:55:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:55:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:55:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:55:55,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:55:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:55:55,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981922620] [2020-10-13 09:55:55,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:55:55,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:55:55,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050442695] [2020-10-13 09:55:55,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:55:55,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:55:55,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:55:55,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:55:55,726 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-13 09:56:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:06,885 INFO L93 Difference]: Finished difference Result 2984 states and 5769 transitions. [2020-10-13 09:56:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:56:06,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-13 09:56:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:06,932 INFO L225 Difference]: With dead ends: 2984 [2020-10-13 09:56:06,932 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:56:06,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:56:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:56:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-13 09:56:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-13 09:56:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3571 transitions. [2020-10-13 09:56:07,120 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3571 transitions. Word has length 18 [2020-10-13 09:56:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:07,120 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 3571 transitions. [2020-10-13 09:56:07,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:56:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3571 transitions. [2020-10-13 09:56:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 09:56:07,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:07,127 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:56:07,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:56:07,127 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:07,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:07,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1814973760, now seen corresponding path program 1 times [2020-10-13 09:56:07,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:07,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038879172] [2020-10-13 09:56:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:07,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:08,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:08,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:56:08,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:56:08,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-13 09:56:08,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:56:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:56:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:56:08,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:08,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:08,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:08,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:08,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:08,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:56:08,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:56:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:08,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:08,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:56:08,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 09:56:08,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:56:08,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 09:56:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:56:08,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038879172] [2020-10-13 09:56:08,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:08,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:56:08,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095453347] [2020-10-13 09:56:08,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:56:08,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:08,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:56:08,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:56:08,547 INFO L87 Difference]: Start difference. First operand 2135 states and 3571 transitions. Second operand 6 states. [2020-10-13 09:56:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:22,386 INFO L93 Difference]: Finished difference Result 8545 states and 14529 transitions. [2020-10-13 09:56:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:56:22,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-13 09:56:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:22,437 INFO L225 Difference]: With dead ends: 8545 [2020-10-13 09:56:22,437 INFO L226 Difference]: Without dead ends: 6416 [2020-10-13 09:56:22,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:56:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6416 states. [2020-10-13 09:56:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6416 to 6397. [2020-10-13 09:56:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6397 states. [2020-10-13 09:56:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6397 states to 6397 states and 10234 transitions. [2020-10-13 09:56:22,612 INFO L78 Accepts]: Start accepts. Automaton has 6397 states and 10234 transitions. Word has length 106 [2020-10-13 09:56:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:22,613 INFO L479 AbstractCegarLoop]: Abstraction has 6397 states and 10234 transitions. [2020-10-13 09:56:22,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:56:22,613 INFO L276 IsEmpty]: Start isEmpty. Operand 6397 states and 10234 transitions. [2020-10-13 09:56:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 09:56:22,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:22,619 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:56:22,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:56:22,619 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:22,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:22,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1536276696, now seen corresponding path program 1 times [2020-10-13 09:56:22,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:22,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437919806] [2020-10-13 09:56:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:23,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 09:56:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:56:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-13 09:56:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:56:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:56:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:23,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:23,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:23,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:23,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:23,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:56:23,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:23,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:56:23,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:23,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:56:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 09:56:23,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 09:56:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:56:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:56:24,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437919806] [2020-10-13 09:56:24,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:24,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:56:24,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78940641] [2020-10-13 09:56:24,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:56:24,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:24,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:56:24,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:56:24,009 INFO L87 Difference]: Start difference. First operand 6397 states and 10234 transitions. Second operand 5 states. [2020-10-13 09:56:33,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:33,036 INFO L93 Difference]: Finished difference Result 19194 states and 31277 transitions. [2020-10-13 09:56:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:56:33,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-13 09:56:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:33,116 INFO L225 Difference]: With dead ends: 19194 [2020-10-13 09:56:33,116 INFO L226 Difference]: Without dead ends: 12803 [2020-10-13 09:56:33,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:56:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12803 states. [2020-10-13 09:56:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12803 to 12082. [2020-10-13 09:56:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12082 states. [2020-10-13 09:56:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12082 states to 12082 states and 17502 transitions. [2020-10-13 09:56:33,529 INFO L78 Accepts]: Start accepts. Automaton has 12082 states and 17502 transitions. Word has length 150 [2020-10-13 09:56:33,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:33,531 INFO L479 AbstractCegarLoop]: Abstraction has 12082 states and 17502 transitions. [2020-10-13 09:56:33,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:56:33,532 INFO L276 IsEmpty]: Start isEmpty. Operand 12082 states and 17502 transitions. [2020-10-13 09:56:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-13 09:56:33,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:33,551 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:56:33,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:56:33,551 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:33,552 INFO L82 PathProgramCache]: Analyzing trace with hash -386793032, now seen corresponding path program 1 times [2020-10-13 09:56:33,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:33,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922754125] [2020-10-13 09:56:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:33,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:35,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:35,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-13 09:56:35,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:56:35,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-10-13 09:56:35,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-13 09:56:35,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:56:35,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:35,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:35,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:35,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:35,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:35,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:56:35,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:56:35,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:35,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:35,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:35,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:56:35,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-13 09:56:35,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-13 09:56:35,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:56:35,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922754125] [2020-10-13 09:56:35,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:35,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:56:35,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25447714] [2020-10-13 09:56:35,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:56:35,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:35,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:56:35,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:56:35,731 INFO L87 Difference]: Start difference. First operand 12082 states and 17502 transitions. Second operand 5 states. [2020-10-13 09:56:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:56:47,476 INFO L93 Difference]: Finished difference Result 29842 states and 44975 transitions. [2020-10-13 09:56:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:56:47,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-13 09:56:47,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:56:47,561 INFO L225 Difference]: With dead ends: 29842 [2020-10-13 09:56:47,562 INFO L226 Difference]: Without dead ends: 17766 [2020-10-13 09:56:47,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:56:47,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17766 states. [2020-10-13 09:56:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17766 to 17755. [2020-10-13 09:56:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17755 states. [2020-10-13 09:56:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17755 states to 17755 states and 25343 transitions. [2020-10-13 09:56:48,034 INFO L78 Accepts]: Start accepts. Automaton has 17755 states and 25343 transitions. Word has length 270 [2020-10-13 09:56:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:56:48,036 INFO L479 AbstractCegarLoop]: Abstraction has 17755 states and 25343 transitions. [2020-10-13 09:56:48,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:56:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 17755 states and 25343 transitions. [2020-10-13 09:56:48,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-13 09:56:48,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:56:48,075 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:56:48,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:56:48,076 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:56:48,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:56:48,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1249431456, now seen corresponding path program 1 times [2020-10-13 09:56:48,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:56:48,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782179920] [2020-10-13 09:56:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:56:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:49,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:50,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:53,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:53,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-13 09:56:53,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:56:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:56:53,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:56:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-13 09:56:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:56:53,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:53,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:56:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:53,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:53,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:53,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:56:53,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:56:53,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:53,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:53,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:56:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:53,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:53,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:56:53,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:56:53,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:56:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:56:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:53,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 09:56:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:53,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:53,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-13 09:56:53,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-13 09:56:53,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 386 [2020-10-13 09:56:53,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:56:53,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:56:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:56:53,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:56:54,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:56:54,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:56:54,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:56:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:56:54,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:56:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:56:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:56:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:56:54,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:56:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:56:54,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782179920] [2020-10-13 09:56:54,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:56:54,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:56:54,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750486843] [2020-10-13 09:56:54,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:56:54,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:56:54,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:56:54,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:56:54,570 INFO L87 Difference]: Start difference. First operand 17755 states and 25343 transitions. Second operand 5 states. [2020-10-13 09:57:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:57:04,827 INFO L93 Difference]: Finished difference Result 51810 states and 75696 transitions. [2020-10-13 09:57:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:57:04,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 498 [2020-10-13 09:57:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:57:04,971 INFO L225 Difference]: With dead ends: 51810 [2020-10-13 09:57:04,971 INFO L226 Difference]: Without dead ends: 34061 [2020-10-13 09:57:05,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:57:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34061 states. [2020-10-13 09:57:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34061 to 34057. [2020-10-13 09:57:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34057 states. [2020-10-13 09:57:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34057 states to 34057 states and 46952 transitions. [2020-10-13 09:57:05,849 INFO L78 Accepts]: Start accepts. Automaton has 34057 states and 46952 transitions. Word has length 498 [2020-10-13 09:57:05,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:57:05,849 INFO L479 AbstractCegarLoop]: Abstraction has 34057 states and 46952 transitions. [2020-10-13 09:57:05,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:57:05,850 INFO L276 IsEmpty]: Start isEmpty. Operand 34057 states and 46952 transitions. [2020-10-13 09:57:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-13 09:57:05,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:57:05,915 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:57:05,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:57:05,915 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:57:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:57:05,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1479003145, now seen corresponding path program 1 times [2020-10-13 09:57:05,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:57:05,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108529204] [2020-10-13 09:57:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:57:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:06,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:11,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:11,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-13 09:57:11,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:57:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-13 09:57:11,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:57:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:57:11,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:57:11,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:11,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:57:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:11,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:11,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:57:11,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:11,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:57:11,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:57:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:11,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:11,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:11,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:57:11,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:57:11,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:11,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:57:11,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:11,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 09:57:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:15,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:15,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-13 09:57:15,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:57:15,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3794 [2020-10-13 09:57:15,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:15,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:57:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:57:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 440 [2020-10-13 09:57:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:15,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:15,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:15,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:15,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:57:15,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:15,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-13 09:57:15,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:57:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:57:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 09:57:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:57:16,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108529204] [2020-10-13 09:57:16,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:57:16,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:57:16,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168257405] [2020-10-13 09:57:16,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:57:16,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:57:16,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:57:16,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:57:16,434 INFO L87 Difference]: Start difference. First operand 34057 states and 46952 transitions. Second operand 7 states. [2020-10-13 09:57:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:57:31,242 INFO L93 Difference]: Finished difference Result 78445 states and 111046 transitions. [2020-10-13 09:57:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:57:31,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 552 [2020-10-13 09:57:31,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:57:31,403 INFO L225 Difference]: With dead ends: 78445 [2020-10-13 09:57:31,403 INFO L226 Difference]: Without dead ends: 42926 [2020-10-13 09:57:31,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:57:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42926 states. [2020-10-13 09:57:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42926 to 41976. [2020-10-13 09:57:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41976 states. [2020-10-13 09:57:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41976 states to 41976 states and 51827 transitions. [2020-10-13 09:57:32,883 INFO L78 Accepts]: Start accepts. Automaton has 41976 states and 51827 transitions. Word has length 552 [2020-10-13 09:57:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:57:32,884 INFO L479 AbstractCegarLoop]: Abstraction has 41976 states and 51827 transitions. [2020-10-13 09:57:32,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:57:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 41976 states and 51827 transitions. [2020-10-13 09:57:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-13 09:57:32,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:57:32,958 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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] [2020-10-13 09:57:32,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:57:32,959 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:57:32,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:57:32,959 INFO L82 PathProgramCache]: Analyzing trace with hash -368199844, now seen corresponding path program 1 times [2020-10-13 09:57:32,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:57:32,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230417956] [2020-10-13 09:57:32,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:57:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:34,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:38,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:38,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-13 09:57:38,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:57:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:57:38,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:57:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:57:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:57:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:57:38,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:57:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:38,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:38,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:57:38,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:57:38,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:38,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:57:38,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:57:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:38,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:38,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:57:38,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:38,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:57:38,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:57:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:57:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 09:57:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 09:57:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:38,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:38,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-13 09:57:38,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 09:57:38,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 437 [2020-10-13 09:57:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:38,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:38,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:38,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:57:38,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:57:38,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:38,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:38,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:38,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:38,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:57:39,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230417956] [2020-10-13 09:57:39,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:57:39,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:57:39,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778019477] [2020-10-13 09:57:39,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:57:39,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:57:39,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:57:39,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:57:39,439 INFO L87 Difference]: Start difference. First operand 41976 states and 51827 transitions. Second operand 7 states. [2020-10-13 09:57:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:57:49,385 INFO L93 Difference]: Finished difference Result 75508 states and 93557 transitions. [2020-10-13 09:57:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:57:49,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 587 [2020-10-13 09:57:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:57:49,471 INFO L225 Difference]: With dead ends: 75508 [2020-10-13 09:57:49,472 INFO L226 Difference]: Without dead ends: 33562 [2020-10-13 09:57:49,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:57:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33562 states. [2020-10-13 09:57:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33562 to 29301. [2020-10-13 09:57:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29301 states. [2020-10-13 09:57:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29301 states to 29301 states and 33318 transitions. [2020-10-13 09:57:51,223 INFO L78 Accepts]: Start accepts. Automaton has 29301 states and 33318 transitions. Word has length 587 [2020-10-13 09:57:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:57:51,224 INFO L479 AbstractCegarLoop]: Abstraction has 29301 states and 33318 transitions. [2020-10-13 09:57:51,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:57:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand 29301 states and 33318 transitions. [2020-10-13 09:57:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2020-10-13 09:57:51,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:57:51,269 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:57:51,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:57:51,270 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:57:51,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:57:51,270 INFO L82 PathProgramCache]: Analyzing trace with hash -850048001, now seen corresponding path program 1 times [2020-10-13 09:57:51,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:57:51,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385946397] [2020-10-13 09:57:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:57:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:54,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:54,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 615 [2020-10-13 09:57:54,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:57:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3037 [2020-10-13 09:57:54,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:57:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:57:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:57:54,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:54,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:57:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:54,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:54,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:57:54,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:54,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:57:54,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:57:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:57:54,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:54,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:57:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:54,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:54,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:54,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:57:54,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:54,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:57:54,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:57:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:57:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:57:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 09:57:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:54,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:54,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:57:54,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:54,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:57:54,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 09:57:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:57:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 09:57:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:55,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:55,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-13 09:57:55,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-13 09:57:55,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 437 [2020-10-13 09:57:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:55,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:57:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:57:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:57:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:57:55,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:57:55,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:57:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:57:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:57:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:57:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:57:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:57:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:57:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 33 proven. 132 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:57:55,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385946397] [2020-10-13 09:57:55,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:57:55,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:57:55,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351804923] [2020-10-13 09:57:55,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:57:55,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:57:55,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:57:55,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:57:55,546 INFO L87 Difference]: Start difference. First operand 29301 states and 33318 transitions. Second operand 7 states. [2020-10-13 09:58:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:58:06,071 INFO L93 Difference]: Finished difference Result 65280 states and 75572 transitions. [2020-10-13 09:58:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:58:06,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 599 [2020-10-13 09:58:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:58:06,151 INFO L225 Difference]: With dead ends: 65280 [2020-10-13 09:58:06,151 INFO L226 Difference]: Without dead ends: 35985 [2020-10-13 09:58:06,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:58:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35985 states. [2020-10-13 09:58:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35985 to 35837. [2020-10-13 09:58:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35837 states. [2020-10-13 09:58:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35837 states to 35837 states and 40250 transitions. [2020-10-13 09:58:06,730 INFO L78 Accepts]: Start accepts. Automaton has 35837 states and 40250 transitions. Word has length 599 [2020-10-13 09:58:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:58:06,731 INFO L479 AbstractCegarLoop]: Abstraction has 35837 states and 40250 transitions. [2020-10-13 09:58:06,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:58:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 35837 states and 40250 transitions. [2020-10-13 09:58:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2020-10-13 09:58:06,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:58:06,763 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:58:06,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:58:06,763 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:58:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:58:06,764 INFO L82 PathProgramCache]: Analyzing trace with hash 406825562, now seen corresponding path program 1 times [2020-10-13 09:58:06,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:58:06,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130344111] [2020-10-13 09:58:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:58:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:11,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:11,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 666 [2020-10-13 09:58:11,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:58:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:58:11,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:58:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:58:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:58:11,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:11,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:58:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:11,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:11,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:58:11,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:58:11,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:58:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:12,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:12,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:58:12,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:12,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:58:12,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:12,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:58:12,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:12,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:58:12,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:58:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:12,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:12,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:58:12,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:58:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:58:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:58:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:58:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:12,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:58:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:12,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:12,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-13 09:58:12,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 09:58:12,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 437 [2020-10-13 09:58:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:12,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:58:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:12,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:12,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:12,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:58:12,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:58:12,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:12,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 107 proven. 72 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:58:12,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130344111] [2020-10-13 09:58:12,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:58:12,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:58:12,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523014109] [2020-10-13 09:58:12,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:58:12,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:58:12,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:58:12,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:58:12,962 INFO L87 Difference]: Start difference. First operand 35837 states and 40250 transitions. Second operand 8 states. [2020-10-13 09:58:25,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:58:25,232 INFO L93 Difference]: Finished difference Result 85215 states and 95964 transitions. [2020-10-13 09:58:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:58:25,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 650 [2020-10-13 09:58:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:58:25,328 INFO L225 Difference]: With dead ends: 85215 [2020-10-13 09:58:25,328 INFO L226 Difference]: Without dead ends: 47968 [2020-10-13 09:58:25,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:58:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47968 states. [2020-10-13 09:58:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47968 to 43719. [2020-10-13 09:58:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43719 states. [2020-10-13 09:58:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43719 states to 43719 states and 48485 transitions. [2020-10-13 09:58:25,991 INFO L78 Accepts]: Start accepts. Automaton has 43719 states and 48485 transitions. Word has length 650 [2020-10-13 09:58:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:58:25,991 INFO L479 AbstractCegarLoop]: Abstraction has 43719 states and 48485 transitions. [2020-10-13 09:58:25,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:58:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 43719 states and 48485 transitions. [2020-10-13 09:58:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2020-10-13 09:58:26,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:58:26,027 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:58:26,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:58:26,027 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:58:26,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:58:26,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1694377868, now seen corresponding path program 1 times [2020-10-13 09:58:26,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:58:26,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758728938] [2020-10-13 09:58:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:58:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:26,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:26,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:32,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:32,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 759 [2020-10-13 09:58:32,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:58:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5867 [2020-10-13 09:58:32,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:58:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 09:58:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:58:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:58:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:32,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:32,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:58:32,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:32,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:58:32,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:32,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:32,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:58:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:32,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:32,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:58:32,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:58:32,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:58:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 09:58:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:32,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 09:58:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:32,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:32,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:58:32,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:58:32,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:58:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:58:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:58:32,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:32,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:58:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:32,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:32,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:58:32,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:32,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:58:32,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 09:58:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-13 09:58:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:32,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:32,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:32,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-13 09:58:32,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:58:32,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 437 [2020-10-13 09:58:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:32,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:58:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:32,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:32,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:58:32,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:58:32,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 120 proven. 138 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-13 09:58:33,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758728938] [2020-10-13 09:58:33,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:58:33,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:58:33,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070849864] [2020-10-13 09:58:33,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:58:33,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:58:33,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:58:33,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:58:33,207 INFO L87 Difference]: Start difference. First operand 43719 states and 48485 transitions. Second operand 7 states. [2020-10-13 09:58:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:58:46,992 INFO L93 Difference]: Finished difference Result 99313 states and 112881 transitions. [2020-10-13 09:58:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:58:46,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 741 [2020-10-13 09:58:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:58:47,120 INFO L225 Difference]: With dead ends: 99313 [2020-10-13 09:58:47,121 INFO L226 Difference]: Without dead ends: 55600 [2020-10-13 09:58:47,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:58:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55600 states. [2020-10-13 09:58:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55600 to 52385. [2020-10-13 09:58:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52385 states. [2020-10-13 09:58:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52385 states to 52385 states and 58019 transitions. [2020-10-13 09:58:48,007 INFO L78 Accepts]: Start accepts. Automaton has 52385 states and 58019 transitions. Word has length 741 [2020-10-13 09:58:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:58:48,008 INFO L479 AbstractCegarLoop]: Abstraction has 52385 states and 58019 transitions. [2020-10-13 09:58:48,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:58:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 52385 states and 58019 transitions. [2020-10-13 09:58:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2020-10-13 09:58:48,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:58:48,050 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 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] [2020-10-13 09:58:48,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:58:48,051 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:58:48,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:58:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1000864925, now seen corresponding path program 1 times [2020-10-13 09:58:48,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:58:48,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197820914] [2020-10-13 09:58:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:58:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:48,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:49,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:53,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:53,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 785 [2020-10-13 09:58:53,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:58:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:58:53,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:58:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:58:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:58:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:58:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:53,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:53,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:58:53,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:58:53,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:58:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:58:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:58:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:53,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:58:53,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:58:53,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:58:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:58:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:58:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:53,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:58:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:53,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:53,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:58:53,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:58:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 09:58:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:53,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 09:58:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:53,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:53,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:58:53,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:53,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:58:53,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:53,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:58:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:53,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:58:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:53,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:53,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:58:53,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:53,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:58:53,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 09:58:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-13 09:58:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:53,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:53,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:53,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-13 09:58:53,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 09:58:53,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 437 [2020-10-13 09:58:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:58:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:58:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:58:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:58:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:58:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:58:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:58:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:58:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:58:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:58:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:58:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:58:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:58:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 55 proven. 276 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2020-10-13 09:58:54,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197820914] [2020-10-13 09:58:54,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:58:54,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:58:54,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118701450] [2020-10-13 09:58:54,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:58:54,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:58:54,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:58:54,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:58:54,335 INFO L87 Difference]: Start difference. First operand 52385 states and 58019 transitions. Second operand 7 states. [2020-10-13 09:59:04,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:59:04,717 INFO L93 Difference]: Finished difference Result 121050 states and 134055 transitions. [2020-10-13 09:59:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:59:04,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 765 [2020-10-13 09:59:04,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:59:04,860 INFO L225 Difference]: With dead ends: 121050 [2020-10-13 09:59:04,861 INFO L226 Difference]: Without dead ends: 68671 [2020-10-13 09:59:04,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:59:04,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68671 states. [2020-10-13 09:59:05,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68671 to 59490. [2020-10-13 09:59:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59490 states. [2020-10-13 09:59:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59490 states to 59490 states and 65693 transitions. [2020-10-13 09:59:05,713 INFO L78 Accepts]: Start accepts. Automaton has 59490 states and 65693 transitions. Word has length 765 [2020-10-13 09:59:05,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:59:05,713 INFO L479 AbstractCegarLoop]: Abstraction has 59490 states and 65693 transitions. [2020-10-13 09:59:05,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:59:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 59490 states and 65693 transitions. [2020-10-13 09:59:05,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-13 09:59:05,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:59:05,751 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:59:05,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:59:05,752 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:59:05,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:59:05,752 INFO L82 PathProgramCache]: Analyzing trace with hash 710520486, now seen corresponding path program 1 times [2020-10-13 09:59:05,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:59:05,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435040503] [2020-10-13 09:59:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:59:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:59:05,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:10,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:59:10,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-10-13 09:59:10,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:59:10,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:59:10,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:59:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:59:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:59:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:59:10,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:59:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:59:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:59:11,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:11,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:59:11,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:59:11,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:59:11,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:59:11,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:59:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:59:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:59:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:59:11,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:59:11,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:59:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:59:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:11,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:59:11,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:59:11,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:59:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:59:11,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:59:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:59:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:59:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:59:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:59:11,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:59:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:59:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:11,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:59:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:59:11,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:59:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:59:11,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:59:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:59:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-10-13 09:59:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:59:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:59:11,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-13 09:59:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:59:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:11,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:59:11,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-13 09:59:11,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:59:11,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 09:59:11,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:59:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:59:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 437 [2020-10-13 09:59:11,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:59:11,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:59:11,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:59:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:59:11,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:11,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:59:11,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:59:11,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:59:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:59:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:59:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:59:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:59:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:59:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:59:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 33 proven. 234 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-13 09:59:13,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435040503] [2020-10-13 09:59:13,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:59:13,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:59:13,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966917700] [2020-10-13 09:59:13,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:59:13,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:59:13,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:59:13,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:59:13,486 INFO L87 Difference]: Start difference. First operand 59490 states and 65693 transitions. Second operand 7 states.