/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:52:46,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:52:46,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:52:47,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:52:47,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:52:47,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:52:47,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:52:47,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:52:47,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:52:47,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:52:47,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:52:47,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:52:47,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:52:47,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:52:47,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:52:47,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:52:47,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:52:47,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:52:47,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:52:47,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:52:47,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:52:47,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:52:47,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:52:47,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:52:47,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:52:47,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:52:47,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:52:47,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:52:47,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:52:47,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:52:47,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:52:47,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:52:47,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:52:47,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:52:47,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:52:47,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:52:47,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:52:47,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:52:47,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:52:47,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:52:47,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:52:47,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:52:47,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:52:47,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:52:47,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:52:47,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:52:47,133 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:52:47,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:52:47,133 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:52:47,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:52:47,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:52:47,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:52:47,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:52:47,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:52:47,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:52:47,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:52:47,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:52:47,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:52:47,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:52:47,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:52:47,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:52:47,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:52:47,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:52:47,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:52:47,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:52:47,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:52:47,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:52:47,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:52:47,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:52:47,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:52:47,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:52:47,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:52:47,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:52:47,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:52:47,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:52:47,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:52:47,445 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:52:47,445 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-14 21:52:47,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc68db7c/5b5aff55ae004be8ae32453a97ceb73f/FLAGe39c721cf [2020-10-14 21:52:48,186 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:52:48,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-14 21:52:48,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc68db7c/5b5aff55ae004be8ae32453a97ceb73f/FLAGe39c721cf [2020-10-14 21:52:48,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc68db7c/5b5aff55ae004be8ae32453a97ceb73f [2020-10-14 21:52:48,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:52:48,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:52:48,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:52:48,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:52:48,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:52:48,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:52:48" (1/1) ... [2020-10-14 21:52:48,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35692340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:48, skipping insertion in model container [2020-10-14 21:52:48,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:52:48" (1/1) ... [2020-10-14 21:52:48,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:52:48,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:52:49,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:52:49,295 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:52:49,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:52:49,616 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:52:49,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49 WrapperNode [2020-10-14 21:52:49,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:52:49,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:52:49,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:52:49,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:52:49,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49" (1/1) ... [2020-10-14 21:52:49,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49" (1/1) ... [2020-10-14 21:52:49,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49" (1/1) ... [2020-10-14 21:52:49,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49" (1/1) ... [2020-10-14 21:52:49,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49" (1/1) ... [2020-10-14 21:52:49,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49" (1/1) ... [2020-10-14 21:52:49,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49" (1/1) ... [2020-10-14 21:52:49,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:52:49,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:52:49,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:52:49,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:52:49,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:52:49,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:52:49,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:52:49,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:52:49,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:52:49,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:52:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:52:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:52:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:52:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:52:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:52:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:52:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:52:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:52:55,809 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:52:55,809 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:52:55,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:52:55 BoogieIcfgContainer [2020-10-14 21:52:55,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:52:55,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:52:55,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:52:55,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:52:55,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:52:48" (1/3) ... [2020-10-14 21:52:55,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0dfa3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:52:55, skipping insertion in model container [2020-10-14 21:52:55,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:49" (2/3) ... [2020-10-14 21:52:55,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0dfa3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:52:55, skipping insertion in model container [2020-10-14 21:52:55,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:52:55" (3/3) ... [2020-10-14 21:52:55,825 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label05.c [2020-10-14 21:52:55,836 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:52:55,844 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:52:55,859 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:52:55,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:52:55,885 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:52:55,885 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:52:55,886 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:52:55,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:52:55,886 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:52:55,886 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:52:55,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:52:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:52:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 21:52:55,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:52:55,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:52:55,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:52:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:52:55,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1317057632, now seen corresponding path program 1 times [2020-10-14 21:52:55,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:52:55,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349477546] [2020-10-14 21:52:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:52:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:56,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:56,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:52:56,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 21:52:56,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:56,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:52:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:52:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:52:56,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:52:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:52:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:52:56,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:52:56,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:56,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:52:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:52:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:52:56,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349477546] [2020-10-14 21:52:56,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:52:56,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:52:56,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401538967] [2020-10-14 21:52:56,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:52:56,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:52:56,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:52:56,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:52:56,952 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:53:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:02,600 INFO L93 Difference]: Finished difference Result 1240 states and 2220 transitions. [2020-10-14 21:53:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:53:02,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 21:53:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:02,625 INFO L225 Difference]: With dead ends: 1240 [2020-10-14 21:53:02,625 INFO L226 Difference]: Without dead ends: 724 [2020-10-14 21:53:02,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:53:02,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-14 21:53:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 712. [2020-10-14 21:53:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-14 21:53:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1129 transitions. [2020-10-14 21:53:02,740 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1129 transitions. Word has length 70 [2020-10-14 21:53:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:02,741 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1129 transitions. [2020-10-14 21:53:02,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:53:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1129 transitions. [2020-10-14 21:53:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 21:53:02,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:02,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:53:02,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:53:02,753 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash 717900603, now seen corresponding path program 1 times [2020-10-14 21:53:02,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:02,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802488328] [2020-10-14 21:53:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:02,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:04,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:04,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:04,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 21:53:04,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:53:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2070 [2020-10-14 21:53:04,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:04,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:53:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:04,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 21:53:04,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:53:04,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:04,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:04,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:04,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:04,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:53:04,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:04,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:04,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:05,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:05,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:05,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:53:05,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:53:05,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 21:53:05,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:05,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:53:05,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:53:05,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802488328] [2020-10-14 21:53:05,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:05,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:53:05,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381491243] [2020-10-14 21:53:05,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:53:05,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:05,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:53:05,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:53:05,349 INFO L87 Difference]: Start difference. First operand 712 states and 1129 transitions. Second operand 5 states. [2020-10-14 21:53:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:13,024 INFO L93 Difference]: Finished difference Result 2052 states and 3298 transitions. [2020-10-14 21:53:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:53:13,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 21:53:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:13,037 INFO L225 Difference]: With dead ends: 2052 [2020-10-14 21:53:13,038 INFO L226 Difference]: Without dead ends: 1346 [2020-10-14 21:53:13,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:53:13,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-10-14 21:53:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1340. [2020-10-14 21:53:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-10-14 21:53:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1864 transitions. [2020-10-14 21:53:13,093 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1864 transitions. Word has length 142 [2020-10-14 21:53:13,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:13,095 INFO L479 AbstractCegarLoop]: Abstraction has 1340 states and 1864 transitions. [2020-10-14 21:53:13,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:53:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1864 transitions. [2020-10-14 21:53:13,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 21:53:13,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:13,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:53:13,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:53:13,104 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:13,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1661095937, now seen corresponding path program 1 times [2020-10-14 21:53:13,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:13,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546531715] [2020-10-14 21:53:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:15,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:15,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 21:53:15,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:53:15,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2335 [2020-10-14 21:53:15,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:15,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:15,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:53:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 21:53:15,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:53:15,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:15,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:15,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:15,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:15,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:53:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:15,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:15,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:15,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:15,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:53:15,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 21:53:15,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:15,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:53:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:53:15,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546531715] [2020-10-14 21:53:15,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:53:15,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:53:15,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270696340] [2020-10-14 21:53:15,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:53:15,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:15,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:53:15,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:53:15,828 INFO L87 Difference]: Start difference. First operand 1340 states and 1864 transitions. Second operand 7 states. [2020-10-14 21:53:23,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:23,264 INFO L93 Difference]: Finished difference Result 3653 states and 5190 transitions. [2020-10-14 21:53:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:53:23,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-10-14 21:53:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:23,277 INFO L225 Difference]: With dead ends: 3653 [2020-10-14 21:53:23,277 INFO L226 Difference]: Without dead ends: 2319 [2020-10-14 21:53:23,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:53:23,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-14 21:53:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 2277. [2020-10-14 21:53:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-10-14 21:53:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2922 transitions. [2020-10-14 21:53:23,342 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2922 transitions. Word has length 153 [2020-10-14 21:53:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:23,343 INFO L479 AbstractCegarLoop]: Abstraction has 2277 states and 2922 transitions. [2020-10-14 21:53:23,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:53:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2922 transitions. [2020-10-14 21:53:23,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 21:53:23,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:23,349 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:23,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:53:23,349 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:23,349 INFO L82 PathProgramCache]: Analyzing trace with hash 538894847, now seen corresponding path program 1 times [2020-10-14 21:53:23,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:23,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000044379] [2020-10-14 21:53:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:23,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:23,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:24,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:26,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:26,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 21:53:26,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:53:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3201 [2020-10-14 21:53:26,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:26,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:53:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 21:53:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:26,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:26,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:26,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:26,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:53:26,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:26,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:26,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:26,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:53:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:26,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:26,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:53:26,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:26,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 21:53:26,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:26,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:53:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:53:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:27,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:27,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:53:27,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:27,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 21:53:27,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:27,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:53:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:53:27,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000044379] [2020-10-14 21:53:27,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:27,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:53:27,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808254083] [2020-10-14 21:53:27,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:53:27,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:27,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:53:27,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:53:27,387 INFO L87 Difference]: Start difference. First operand 2277 states and 2922 transitions. Second operand 8 states. [2020-10-14 21:53:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:35,060 INFO L93 Difference]: Finished difference Result 4905 states and 6620 transitions. [2020-10-14 21:53:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:53:35,065 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 248 [2020-10-14 21:53:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:35,084 INFO L225 Difference]: With dead ends: 4905 [2020-10-14 21:53:35,084 INFO L226 Difference]: Without dead ends: 3561 [2020-10-14 21:53:35,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:53:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-10-14 21:53:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3215. [2020-10-14 21:53:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2020-10-14 21:53:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 3975 transitions. [2020-10-14 21:53:35,195 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 3975 transitions. Word has length 248 [2020-10-14 21:53:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:35,196 INFO L479 AbstractCegarLoop]: Abstraction has 3215 states and 3975 transitions. [2020-10-14 21:53:35,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:53:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 3975 transitions. [2020-10-14 21:53:35,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-14 21:53:35,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:35,209 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:35,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:53:35,209 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:35,210 INFO L82 PathProgramCache]: Analyzing trace with hash -468948057, now seen corresponding path program 1 times [2020-10-14 21:53:35,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:35,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486206015] [2020-10-14 21:53:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:35,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:35,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:40,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:40,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-14 21:53:40,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:53:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 21:53:40,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:40,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:53:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 21:53:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:40,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:40,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:40,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:53:40,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:40,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:53:40,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:40,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:40,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:53:40,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 21:53:40,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:40,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:53:40,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:41,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:53:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:41,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:41,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:41,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:53:41,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:53:41,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:41,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:41,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:53:41,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:53:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:53:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 126 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:53:41,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486206015] [2020-10-14 21:53:41,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:41,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:53:41,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335964171] [2020-10-14 21:53:41,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:53:41,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:41,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:53:41,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:53:41,635 INFO L87 Difference]: Start difference. First operand 3215 states and 3975 transitions. Second operand 7 states. [2020-10-14 21:53:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:48,045 INFO L93 Difference]: Finished difference Result 6173 states and 7707 transitions. [2020-10-14 21:53:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:53:48,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-14 21:53:48,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:48,066 INFO L225 Difference]: With dead ends: 6173 [2020-10-14 21:53:48,067 INFO L226 Difference]: Without dead ends: 3271 [2020-10-14 21:53:48,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:53:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2020-10-14 21:53:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3232. [2020-10-14 21:53:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3232 states. [2020-10-14 21:53:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 3993 transitions. [2020-10-14 21:53:48,164 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 3993 transitions. Word has length 350 [2020-10-14 21:53:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:48,164 INFO L479 AbstractCegarLoop]: Abstraction has 3232 states and 3993 transitions. [2020-10-14 21:53:48,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:53:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 3993 transitions. [2020-10-14 21:53:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-14 21:53:48,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:48,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:48,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:53:48,172 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:48,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:48,172 INFO L82 PathProgramCache]: Analyzing trace with hash 755618270, now seen corresponding path program 1 times [2020-10-14 21:53:48,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:48,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497288284] [2020-10-14 21:53:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:50,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:50,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-14 21:53:50,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:53:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-14 21:53:50,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:50,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:53:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 371 [2020-10-14 21:53:50,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:53:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:50,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:50,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:53:50,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:50,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:50,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:50,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:53:50,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:50,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:50,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:50,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:53:50,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:50,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 21:53:50,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:50,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:50,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:50,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:53:50,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:53:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:50,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:51,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:53:51,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:53:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-14 21:53:51,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:51,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 21:53:51,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 59 proven. 158 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:53:51,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497288284] [2020-10-14 21:53:51,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:51,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:53:51,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229520713] [2020-10-14 21:53:51,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:53:51,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:51,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:53:51,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:53:51,451 INFO L87 Difference]: Start difference. First operand 3232 states and 3993 transitions. Second operand 8 states. [2020-10-14 21:54:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:06,965 INFO L93 Difference]: Finished difference Result 9278 states and 12103 transitions. [2020-10-14 21:54:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 21:54:06,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 365 [2020-10-14 21:54:06,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:07,002 INFO L225 Difference]: With dead ends: 9278 [2020-10-14 21:54:07,003 INFO L226 Difference]: Without dead ends: 7923 [2020-10-14 21:54:07,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-14 21:54:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7923 states. [2020-10-14 21:54:07,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7923 to 6063. [2020-10-14 21:54:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6063 states. [2020-10-14 21:54:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6063 states to 6063 states and 7476 transitions. [2020-10-14 21:54:07,178 INFO L78 Accepts]: Start accepts. Automaton has 6063 states and 7476 transitions. Word has length 365 [2020-10-14 21:54:07,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:07,179 INFO L479 AbstractCegarLoop]: Abstraction has 6063 states and 7476 transitions. [2020-10-14 21:54:07,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:54:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6063 states and 7476 transitions. [2020-10-14 21:54:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-14 21:54:07,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:07,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:07,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:54:07,189 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:07,190 INFO L82 PathProgramCache]: Analyzing trace with hash 71516830, now seen corresponding path program 1 times [2020-10-14 21:54:07,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:07,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238110210] [2020-10-14 21:54:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:09,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:09,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-14 21:54:09,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:09,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1895 [2020-10-14 21:54:09,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:09,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-14 21:54:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 21:54:09,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:09,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:09,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:09,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:09,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:09,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:54:09,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:09,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:09,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:54:09,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:09,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:09,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:54:09,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 21:54:09,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:09,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:09,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:54:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:09,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:09,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:09,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:54:09,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:54:09,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:09,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:54:09,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 21:54:09,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238110210] [2020-10-14 21:54:09,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:09,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:54:09,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819391411] [2020-10-14 21:54:09,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:54:09,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:09,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:54:09,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:54:09,798 INFO L87 Difference]: Start difference. First operand 6063 states and 7476 transitions. Second operand 5 states. [2020-10-14 21:54:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:20,433 INFO L93 Difference]: Finished difference Result 12198 states and 15831 transitions. [2020-10-14 21:54:20,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:54:20,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2020-10-14 21:54:20,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:20,486 INFO L225 Difference]: With dead ends: 12198 [2020-10-14 21:54:20,486 INFO L226 Difference]: Without dead ends: 8321 [2020-10-14 21:54:20,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:54:20,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8321 states. [2020-10-14 21:54:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8321 to 8311. [2020-10-14 21:54:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8311 states. [2020-10-14 21:54:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8311 states to 8311 states and 10513 transitions. [2020-10-14 21:54:20,692 INFO L78 Accepts]: Start accepts. Automaton has 8311 states and 10513 transitions. Word has length 424 [2020-10-14 21:54:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:20,693 INFO L479 AbstractCegarLoop]: Abstraction has 8311 states and 10513 transitions. [2020-10-14 21:54:20,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:54:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 8311 states and 10513 transitions. [2020-10-14 21:54:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-14 21:54:20,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:20,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:20,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:54:20,704 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:20,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1127276032, now seen corresponding path program 1 times [2020-10-14 21:54:20,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:20,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231853611] [2020-10-14 21:54:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:22,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:22,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-14 21:54:22,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-14 21:54:22,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:22,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:54:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 21:54:22,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:22,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:22,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:22,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:22,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:54:22,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:22,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:22,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:22,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:22,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:54:22,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:22,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 21:54:22,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:22,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:54:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:22,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:54:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:22,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:54:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 21:54:22,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:22,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 21:54:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:54:22,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231853611] [2020-10-14 21:54:22,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:22,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:22,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547118365] [2020-10-14 21:54:22,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:22,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:22,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:22,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:22,685 INFO L87 Difference]: Start difference. First operand 8311 states and 10513 transitions. Second operand 7 states. [2020-10-14 21:54:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:33,887 INFO L93 Difference]: Finished difference Result 19824 states and 26390 transitions. [2020-10-14 21:54:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:54:33,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 443 [2020-10-14 21:54:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:33,935 INFO L225 Difference]: With dead ends: 19824 [2020-10-14 21:54:33,935 INFO L226 Difference]: Without dead ends: 12135 [2020-10-14 21:54:33,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:54:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12135 states. [2020-10-14 21:54:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12135 to 12079. [2020-10-14 21:54:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12079 states. [2020-10-14 21:54:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12079 states to 12079 states and 15270 transitions. [2020-10-14 21:54:34,363 INFO L78 Accepts]: Start accepts. Automaton has 12079 states and 15270 transitions. Word has length 443 [2020-10-14 21:54:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:34,364 INFO L479 AbstractCegarLoop]: Abstraction has 12079 states and 15270 transitions. [2020-10-14 21:54:34,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 12079 states and 15270 transitions. [2020-10-14 21:54:34,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-14 21:54:34,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:34,378 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:54:34,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:54:34,379 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:34,379 INFO L82 PathProgramCache]: Analyzing trace with hash -2083190187, now seen corresponding path program 1 times [2020-10-14 21:54:34,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:34,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647603397] [2020-10-14 21:54:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:34,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:35,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:39,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:39,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-14 21:54:39,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:54:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 21:54:39,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:39,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:54:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:54:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-14 21:54:39,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:39,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:39,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:39,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:54:39,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:39,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:39,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:39,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:54:39,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:39,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:54:39,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:39,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:54:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:39,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:54:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:39,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:40,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:54:40,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-14 21:54:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:40,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:54:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:40,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 21:54:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:54:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 21:54:40,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:40,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 21:54:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 373 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-14 21:54:40,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647603397] [2020-10-14 21:54:40,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:40,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:40,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064546532] [2020-10-14 21:54:40,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:40,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:40,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:40,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:40,502 INFO L87 Difference]: Start difference. First operand 12079 states and 15270 transitions. Second operand 7 states. [2020-10-14 21:54:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:50,906 INFO L93 Difference]: Finished difference Result 27030 states and 35212 transitions. [2020-10-14 21:54:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:54:50,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-14 21:54:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:50,967 INFO L225 Difference]: With dead ends: 27030 [2020-10-14 21:54:50,967 INFO L226 Difference]: Without dead ends: 15236 [2020-10-14 21:54:51,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:54:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15236 states. [2020-10-14 21:54:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15236 to 14295. [2020-10-14 21:54:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14295 states. [2020-10-14 21:54:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14295 states to 14295 states and 17466 transitions. [2020-10-14 21:54:51,415 INFO L78 Accepts]: Start accepts. Automaton has 14295 states and 17466 transitions. Word has length 464 [2020-10-14 21:54:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:51,415 INFO L479 AbstractCegarLoop]: Abstraction has 14295 states and 17466 transitions. [2020-10-14 21:54:51,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 14295 states and 17466 transitions. [2020-10-14 21:54:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-14 21:54:51,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:51,430 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-14 21:54:51,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:54:51,431 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:51,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1872548719, now seen corresponding path program 1 times [2020-10-14 21:54:51,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:51,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479780305] [2020-10-14 21:54:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:56,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:56,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-14 21:54:56,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:54:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 21:54:56,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:56,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:54:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:54:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:56,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:56,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:56,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:56,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:54:56,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:56,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:56,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:56,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:57,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:57,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:54:57,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:54:57,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:57,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:54:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:54:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:57,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:57,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:54:57,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:57,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 21:54:57,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:57,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:57,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:54:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:57,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:54:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:57,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:57,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:57,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:54:57,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:54:57,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:57,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 21:54:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 301 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 21:54:57,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479780305] [2020-10-14 21:54:57,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:57,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:54:57,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995942110] [2020-10-14 21:54:57,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:54:57,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:57,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:54:57,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:54:57,802 INFO L87 Difference]: Start difference. First operand 14295 states and 17466 transitions. Second operand 8 states. [2020-10-14 21:55:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:13,623 INFO L93 Difference]: Finished difference Result 31211 states and 38434 transitions. [2020-10-14 21:55:13,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 21:55:13,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 537 [2020-10-14 21:55:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:13,694 INFO L225 Difference]: With dead ends: 31211 [2020-10-14 21:55:13,694 INFO L226 Difference]: Without dead ends: 17538 [2020-10-14 21:55:13,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:55:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17538 states. [2020-10-14 21:55:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17538 to 17191. [2020-10-14 21:55:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17191 states. [2020-10-14 21:55:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17191 states to 17191 states and 20920 transitions. [2020-10-14 21:55:14,069 INFO L78 Accepts]: Start accepts. Automaton has 17191 states and 20920 transitions. Word has length 537 [2020-10-14 21:55:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:14,071 INFO L479 AbstractCegarLoop]: Abstraction has 17191 states and 20920 transitions. [2020-10-14 21:55:14,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:55:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 17191 states and 20920 transitions. [2020-10-14 21:55:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-14 21:55:14,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:14,086 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-14 21:55:14,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:55:14,086 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:14,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:14,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1656163801, now seen corresponding path program 1 times [2020-10-14 21:55:14,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:14,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364532865] [2020-10-14 21:55:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:14,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:17,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:17,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-14 21:55:17,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:17,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3413 [2020-10-14 21:55:17,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:17,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 493 [2020-10-14 21:55:17,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 21:55:17,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:17,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:17,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:17,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:17,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:17,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:17,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:17,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:17,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:17,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:17,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:17,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:17,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:17,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 21:55:17,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:17,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:17,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:17,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:17,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:17,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:17,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:17,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 21:55:17,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:17,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:17,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:18,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:55:18,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 21:55:18,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:18,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:55:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-14 21:55:18,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364532865] [2020-10-14 21:55:18,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:18,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:55:18,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110766198] [2020-10-14 21:55:18,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:55:18,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:18,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:55:18,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:55:18,358 INFO L87 Difference]: Start difference. First operand 17191 states and 20920 transitions. Second operand 5 states. [2020-10-14 21:55:25,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:25,746 INFO L93 Difference]: Finished difference Result 37493 states and 46945 transitions. [2020-10-14 21:55:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:55:25,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 549 [2020-10-14 21:55:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:25,825 INFO L225 Difference]: With dead ends: 37493 [2020-10-14 21:55:25,825 INFO L226 Difference]: Without dead ends: 20924 [2020-10-14 21:55:25,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:55:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20924 states. [2020-10-14 21:55:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20924 to 20912. [2020-10-14 21:55:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20912 states. [2020-10-14 21:55:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20912 states to 20912 states and 25190 transitions. [2020-10-14 21:55:26,256 INFO L78 Accepts]: Start accepts. Automaton has 20912 states and 25190 transitions. Word has length 549 [2020-10-14 21:55:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:26,257 INFO L479 AbstractCegarLoop]: Abstraction has 20912 states and 25190 transitions. [2020-10-14 21:55:26,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:55:26,258 INFO L276 IsEmpty]: Start isEmpty. Operand 20912 states and 25190 transitions. [2020-10-14 21:55:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-10-14 21:55:26,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:26,275 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:55:26,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:55:26,276 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:26,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:26,276 INFO L82 PathProgramCache]: Analyzing trace with hash -77471902, now seen corresponding path program 1 times [2020-10-14 21:55:26,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:26,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300399716] [2020-10-14 21:55:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:31,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:31,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 620 [2020-10-14 21:55:31,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:55:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 21:55:31,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:31,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:55:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:31,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 546 [2020-10-14 21:55:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:31,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:31,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:31,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:31,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:31,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:31,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:55:31,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:31,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:31,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:31,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:31,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:31,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:31,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:31,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:31,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 21:55:31,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:31,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 21:55:31,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:31,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:55:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 21:55:31,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 21:55:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:32,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:32,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:55:32,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-10-14 21:55:32,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:32,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:55:32,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:33,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-14 21:55:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:33,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:33,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:55:33,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 21:55:33,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:33,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 21:55:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 191 proven. 295 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-14 21:55:33,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300399716] [2020-10-14 21:55:33,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:33,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:55:33,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620877719] [2020-10-14 21:55:33,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:55:33,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:33,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:55:33,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:55:33,399 INFO L87 Difference]: Start difference. First operand 20912 states and 25190 transitions. Second operand 10 states. [2020-10-14 21:55:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:46,631 INFO L93 Difference]: Finished difference Result 44458 states and 56994 transitions. [2020-10-14 21:55:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 21:55:46,634 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 606 [2020-10-14 21:55:46,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:46,841 INFO L225 Difference]: With dead ends: 44458 [2020-10-14 21:55:46,841 INFO L226 Difference]: Without dead ends: 24485 [2020-10-14 21:55:46,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-14 21:55:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24485 states. [2020-10-14 21:55:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24485 to 24069. [2020-10-14 21:55:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24069 states. [2020-10-14 21:55:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24069 states to 24069 states and 28766 transitions. [2020-10-14 21:55:47,340 INFO L78 Accepts]: Start accepts. Automaton has 24069 states and 28766 transitions. Word has length 606 [2020-10-14 21:55:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:47,341 INFO L479 AbstractCegarLoop]: Abstraction has 24069 states and 28766 transitions. [2020-10-14 21:55:47,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:55:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 24069 states and 28766 transitions. [2020-10-14 21:55:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2020-10-14 21:55:47,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:47,356 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-14 21:55:47,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:55:47,356 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:47,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:47,357 INFO L82 PathProgramCache]: Analyzing trace with hash 293682887, now seen corresponding path program 1 times [2020-10-14 21:55:47,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:47,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538733601] [2020-10-14 21:55:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:47,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:49,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:51,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:52,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:52,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 623 [2020-10-14 21:55:52,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 21:55:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-14 21:55:52,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:52,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 21:55:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 587 [2020-10-14 21:55:52,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:55:52,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:52,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:52,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:52,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:52,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:52,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:52,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:52,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:52,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:52,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:52,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:53,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:53,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:53,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-14 21:55:53,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:53,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:55:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 21:55:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:53,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:54,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:54,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:54,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 21:55:54,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:54,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:55:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:55:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:54,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:54,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:54,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 21:55:54,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 21:55:54,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:54,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 21:55:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 90 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:55:55,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538733601] [2020-10-14 21:55:55,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:55,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 21:55:55,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678289885] [2020-10-14 21:55:55,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 21:55:55,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:55,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 21:55:55,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:55:55,497 INFO L87 Difference]: Start difference. First operand 24069 states and 28766 transitions. Second operand 14 states. [2020-10-14 21:56:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:14,972 INFO L93 Difference]: Finished difference Result 48487 states and 58242 transitions. [2020-10-14 21:56:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 21:56:14,974 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 609 [2020-10-14 21:56:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:15,059 INFO L225 Difference]: With dead ends: 48487 [2020-10-14 21:56:15,059 INFO L226 Difference]: Without dead ends: 24731 [2020-10-14 21:56:15,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2020-10-14 21:56:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24731 states. [2020-10-14 21:56:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24731 to 24710. [2020-10-14 21:56:15,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24710 states. [2020-10-14 21:56:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24710 states to 24710 states and 29531 transitions. [2020-10-14 21:56:15,535 INFO L78 Accepts]: Start accepts. Automaton has 24710 states and 29531 transitions. Word has length 609 [2020-10-14 21:56:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:15,537 INFO L479 AbstractCegarLoop]: Abstraction has 24710 states and 29531 transitions. [2020-10-14 21:56:15,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 21:56:15,537 INFO L276 IsEmpty]: Start isEmpty. Operand 24710 states and 29531 transitions. [2020-10-14 21:56:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2020-10-14 21:56:15,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:15,554 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:56:15,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:56:15,555 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:15,555 INFO L82 PathProgramCache]: Analyzing trace with hash -601909756, now seen corresponding path program 1 times [2020-10-14 21:56:15,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:15,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187420513] [2020-10-14 21:56:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:16,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-14 21:56:17,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-14 21:56:17,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 486 [2020-10-14 21:56:17,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 21:56:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:17,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:17,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:17,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:56:17,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:17,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:17,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:56:17,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 21:56:17,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:17,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:56:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:56:17,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:17,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 21:56:17,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 21:56:17,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:17,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-14 21:56:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:17,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:56:17,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:17,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 21:56:17,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:17,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 21:56:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 21:56:18,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187420513] [2020-10-14 21:56:18,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:18,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:18,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290500132] [2020-10-14 21:56:18,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:18,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:18,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:18,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:18,161 INFO L87 Difference]: Start difference. First operand 24710 states and 29531 transitions. Second operand 7 states. [2020-10-14 21:56:27,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:27,125 INFO L93 Difference]: Finished difference Result 52844 states and 64568 transitions. [2020-10-14 21:56:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:56:27,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 643 [2020-10-14 21:56:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:27,211 INFO L225 Difference]: With dead ends: 52844 [2020-10-14 21:56:27,212 INFO L226 Difference]: Without dead ends: 29066 [2020-10-14 21:56:27,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:56:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29066 states. [2020-10-14 21:56:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29066 to 29061. [2020-10-14 21:56:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29061 states. [2020-10-14 21:56:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29061 states to 29061 states and 34998 transitions. [2020-10-14 21:56:27,704 INFO L78 Accepts]: Start accepts. Automaton has 29061 states and 34998 transitions. Word has length 643 [2020-10-14 21:56:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:27,705 INFO L479 AbstractCegarLoop]: Abstraction has 29061 states and 34998 transitions. [2020-10-14 21:56:27,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 29061 states and 34998 transitions. [2020-10-14 21:56:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-14 21:56:27,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:27,722 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:56:27,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 21:56:27,722 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash 596032435, now seen corresponding path program 1 times [2020-10-14 21:56:27,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:27,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577078815] [2020-10-14 21:56:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:28,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:28,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 662 [2020-10-14 21:56:28,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:28,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-14 21:56:28,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:28,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:28,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:28,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 592 [2020-10-14 21:56:28,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 21:56:28,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:28,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:28,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:28,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:56:28,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:28,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:28,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:28,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:28,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:56:28,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:28,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 21:56:28,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:28,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:56:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:28,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:28,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:28,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 21:56:28,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 21:56:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:28,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 21:56:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:29,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:29,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 21:56:29,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:29,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:56:29,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:29,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:29,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:56:29,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-10-14 21:56:29,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577078815] [2020-10-14 21:56:29,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:29,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:56:29,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627377774] [2020-10-14 21:56:29,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:56:29,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:29,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:56:29,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:56:29,245 INFO L87 Difference]: Start difference. First operand 29061 states and 34998 transitions. Second operand 5 states.