/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/Problem04_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:27:42,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:27:42,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:27:42,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:27:42,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:27:42,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:27:42,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:27:42,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:27:42,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:27:42,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:27:42,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:27:42,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:27:42,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:27:42,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:27:42,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:27:42,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:27:42,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:27:42,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:27:42,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:27:42,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:27:42,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:27:42,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:27:42,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:27:42,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:27:42,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:27:42,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:27:42,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:27:42,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:27:42,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:27:42,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:27:42,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:27:42,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:27:42,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:27:42,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:27:42,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:27:42,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:27:42,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:27:42,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:27:42,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:27:42,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:27:42,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:27:42,879 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 19:27:42,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:27:42,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:27:42,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:27:42,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:27:42,903 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:27:42,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:27:42,904 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:27:42,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:27:42,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:27:42,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:27:42,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:27:42,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:27:42,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:27:42,905 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:27:42,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:27:42,906 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:27:42,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:27:42,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:27:42,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:27:42,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:27:42,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:27:42,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:27:42,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:27:42,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:27:42,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:27:42,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:27:42,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:27:42,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:27:42,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:27:42,909 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 19:27:43,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:27:43,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:27:43,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:27:43,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:27:43,262 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:27:43,263 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label39.c [2020-10-14 19:27:43,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e10c53e00/8b2ff763c19c4024a07d8acd821bf4e2/FLAG0010bd400 [2020-10-14 19:27:44,084 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:27:44,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label39.c [2020-10-14 19:27:44,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e10c53e00/8b2ff763c19c4024a07d8acd821bf4e2/FLAG0010bd400 [2020-10-14 19:27:44,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e10c53e00/8b2ff763c19c4024a07d8acd821bf4e2 [2020-10-14 19:27:44,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:27:44,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:27:44,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:27:44,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:27:44,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:27:44,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:27:44" (1/1) ... [2020-10-14 19:27:44,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e979d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:44, skipping insertion in model container [2020-10-14 19:27:44,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:27:44" (1/1) ... [2020-10-14 19:27:44,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:27:44,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:27:45,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:27:45,854 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:27:46,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:27:47,006 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:27:47,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47 WrapperNode [2020-10-14 19:27:47,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:27:47,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:27:47,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:27:47,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:27:47,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47" (1/1) ... [2020-10-14 19:27:47,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47" (1/1) ... [2020-10-14 19:27:47,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47" (1/1) ... [2020-10-14 19:27:47,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47" (1/1) ... [2020-10-14 19:27:47,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47" (1/1) ... [2020-10-14 19:27:47,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47" (1/1) ... [2020-10-14 19:27:47,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47" (1/1) ... [2020-10-14 19:27:47,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:27:47,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:27:47,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:27:47,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:27:47,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47" (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 19:27:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:27:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:27:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:27:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:27:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:27:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:27:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:27:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:27:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:27:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:27:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:27:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:27:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:27:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:27:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:27:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:27:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:27:51,957 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:27:51,958 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:27:51,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:27:51 BoogieIcfgContainer [2020-10-14 19:27:51,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:27:51,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:27:51,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:27:51,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:27:51,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:27:44" (1/3) ... [2020-10-14 19:27:51,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7784d43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:27:51, skipping insertion in model container [2020-10-14 19:27:51,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:47" (2/3) ... [2020-10-14 19:27:51,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7784d43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:27:51, skipping insertion in model container [2020-10-14 19:27:51,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:27:51" (3/3) ... [2020-10-14 19:27:51,980 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label39.c [2020-10-14 19:27:51,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:27:52,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:27:52,019 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:27:52,050 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:27:52,051 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:27:52,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:27:52,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:27:52,051 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:27:52,051 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:27:52,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:27:52,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:27:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:27:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2020-10-14 19:27:52,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:52,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:52,136 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:52,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:52,143 INFO L82 PathProgramCache]: Analyzing trace with hash 731294538, now seen corresponding path program 1 times [2020-10-14 19:27:52,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:52,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201206387] [2020-10-14 19:27:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:53,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:58,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:58,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 785 [2020-10-14 19:27:58,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:27:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-14 19:27:58,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:58,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:27:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:27:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 779 [2020-10-14 19:27:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:27:58,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:27:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:59,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:59,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:27:59,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:59,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:27:59,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:59,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:59,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:27:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:27:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:00,317 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 19:28:00,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201206387] [2020-10-14 19:28:00,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:28:00,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:28:00,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182430484] [2020-10-14 19:28:00,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:28:00,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:00,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:28:00,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:28:00,347 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2020-10-14 19:28:08,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:08,598 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 19:28:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:28:08,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 771 [2020-10-14 19:28:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:08,651 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:28:08,652 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:28:08,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 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 19:28:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:28:08,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 19:28:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 19:28:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3029 transitions. [2020-10-14 19:28:08,823 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3029 transitions. Word has length 771 [2020-10-14 19:28:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:08,825 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 3029 transitions. [2020-10-14 19:28:08,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:28:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3029 transitions. [2020-10-14 19:28:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2020-10-14 19:28:08,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:08,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:28:08,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:28:08,866 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:08,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:08,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1174601061, now seen corresponding path program 1 times [2020-10-14 19:28:08,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:08,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96337879] [2020-10-14 19:28:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:09,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:14,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:14,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-14 19:28:14,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:28:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 19:28:14,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:14,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:28:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:28:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 776 [2020-10-14 19:28:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:14,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:14,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:14,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:14,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:28:14,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:14,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:14,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:14,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:28:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:14,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:14,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:28:14,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:14,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:28:14,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:14,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:28:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:28:15,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96337879] [2020-10-14 19:28:15,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:28:15,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:28:15,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183555638] [2020-10-14 19:28:15,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:28:15,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:15,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:28:15,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:28:15,442 INFO L87 Difference]: Start difference. First operand 1689 states and 3029 transitions. Second operand 5 states. [2020-10-14 19:28:23,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:23,787 INFO L93 Difference]: Finished difference Result 5075 states and 9165 transitions. [2020-10-14 19:28:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:28:23,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 779 [2020-10-14 19:28:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:23,808 INFO L225 Difference]: With dead ends: 5075 [2020-10-14 19:28:23,809 INFO L226 Difference]: Without dead ends: 3392 [2020-10-14 19:28:23,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 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 19:28:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2020-10-14 19:28:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3379. [2020-10-14 19:28:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3379 states. [2020-10-14 19:28:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 5288 transitions. [2020-10-14 19:28:23,903 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 5288 transitions. Word has length 779 [2020-10-14 19:28:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:23,904 INFO L479 AbstractCegarLoop]: Abstraction has 3379 states and 5288 transitions. [2020-10-14 19:28:23,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:28:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 5288 transitions. [2020-10-14 19:28:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2020-10-14 19:28:23,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:23,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:28:23,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:28:23,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:23,936 INFO L82 PathProgramCache]: Analyzing trace with hash -55032047, now seen corresponding path program 1 times [2020-10-14 19:28:23,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:23,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278451383] [2020-10-14 19:28:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:25,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:27,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:29,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:29,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-14 19:28:29,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:28:29,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 19:28:29,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:29,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:28:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:28:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 776 [2020-10-14 19:28:29,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:29,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:29,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:29,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:29,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:28:29,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:29,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:29,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:28:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:29,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:29,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:28:29,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:29,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:28:29,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:29,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:29,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:29,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:29,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:28:29,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:28:29,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278451383] [2020-10-14 19:28:29,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:28:29,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:28:29,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517097217] [2020-10-14 19:28:29,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:28:29,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:29,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:28:29,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:28:29,979 INFO L87 Difference]: Start difference. First operand 3379 states and 5288 transitions. Second operand 5 states. [2020-10-14 19:28:37,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:37,831 INFO L93 Difference]: Finished difference Result 10141 states and 16072 transitions. [2020-10-14 19:28:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:28:37,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 786 [2020-10-14 19:28:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:37,873 INFO L225 Difference]: With dead ends: 10141 [2020-10-14 19:28:37,873 INFO L226 Difference]: Without dead ends: 6768 [2020-10-14 19:28:37,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 19:28:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2020-10-14 19:28:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6755. [2020-10-14 19:28:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6755 states. [2020-10-14 19:28:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6755 states to 6755 states and 10253 transitions. [2020-10-14 19:28:38,100 INFO L78 Accepts]: Start accepts. Automaton has 6755 states and 10253 transitions. Word has length 786 [2020-10-14 19:28:38,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:38,106 INFO L479 AbstractCegarLoop]: Abstraction has 6755 states and 10253 transitions. [2020-10-14 19:28:38,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:28:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 6755 states and 10253 transitions. [2020-10-14 19:28:38,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2020-10-14 19:28:38,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:38,138 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:38,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:28:38,139 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:38,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:38,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1203130280, now seen corresponding path program 1 times [2020-10-14 19:28:38,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:38,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481823516] [2020-10-14 19:28:38,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:42,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:43,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 859 [2020-10-14 19:28:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:28:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-14 19:28:43,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:43,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:28:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 19:28:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 776 [2020-10-14 19:28:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:28:43,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:43,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:43,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:43,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:28:43,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:43,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:43,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:28:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:43,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:43,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:28:43,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:43,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:28:43,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:43,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:43,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:28:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:43,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:43,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:28:43,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:43,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 19:28:43,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:43,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 19:28:43,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:28:44,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481823516] [2020-10-14 19:28:44,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:28:44,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:28:44,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916581635] [2020-10-14 19:28:44,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:28:44,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:44,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:28:44,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:28:44,397 INFO L87 Difference]: Start difference. First operand 6755 states and 10253 transitions. Second operand 5 states. [2020-10-14 19:28:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:53,723 INFO L93 Difference]: Finished difference Result 20278 states and 31375 transitions. [2020-10-14 19:28:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:28:53,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 841 [2020-10-14 19:28:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:53,790 INFO L225 Difference]: With dead ends: 20278 [2020-10-14 19:28:53,790 INFO L226 Difference]: Without dead ends: 13529 [2020-10-14 19:28:53,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 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 19:28:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13529 states. [2020-10-14 19:28:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13529 to 13515. [2020-10-14 19:28:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13515 states. [2020-10-14 19:28:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13515 states to 13515 states and 19766 transitions. [2020-10-14 19:28:54,222 INFO L78 Accepts]: Start accepts. Automaton has 13515 states and 19766 transitions. Word has length 841 [2020-10-14 19:28:54,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:54,223 INFO L479 AbstractCegarLoop]: Abstraction has 13515 states and 19766 transitions. [2020-10-14 19:28:54,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:28:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 13515 states and 19766 transitions. [2020-10-14 19:28:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-14 19:28:54,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:54,272 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:54,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:28:54,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:54,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1354632572, now seen corresponding path program 1 times [2020-10-14 19:28:54,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:54,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054873580] [2020-10-14 19:28:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:59,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 877 [2020-10-14 19:28:59,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:28:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 19:28:59,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:59,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:28:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 19:28:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-14 19:28:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:29:01,545 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2020-10-14 19:29:02,505 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-10-14 19:29:02,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:29:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:02,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:02,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:29:02,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:29:02,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:02,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:02,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:29:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:29:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:02,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:02,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:29:02,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:02,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:29:02,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:02,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:29:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:29:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:02,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:02,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 19:29:02,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 19:29:02,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:02,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 19:29:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:29:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:29:06,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054873580] [2020-10-14 19:29:06,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:29:06,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:29:06,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433968764] [2020-10-14 19:29:06,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:29:06,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:29:06,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:29:06,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:29:06,979 INFO L87 Difference]: Start difference. First operand 13515 states and 19766 transitions. Second operand 17 states. [2020-10-14 19:29:16,153 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-14 19:29:17,022 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-14 19:29:18,453 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-14 19:29:18,713 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-14 19:29:19,107 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-14 19:29:22,609 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-14 19:29:23,037 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-14 19:29:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:29:25,163 INFO L93 Difference]: Finished difference Result 27701 states and 40982 transitions. [2020-10-14 19:29:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:29:25,164 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 859 [2020-10-14 19:29:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:29:25,210 INFO L225 Difference]: With dead ends: 27701 [2020-10-14 19:29:25,211 INFO L226 Difference]: Without dead ends: 14192 [2020-10-14 19:29:25,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:29:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14192 states. [2020-10-14 19:29:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14192 to 14178. [2020-10-14 19:29:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14178 states. [2020-10-14 19:29:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14178 states to 14178 states and 20447 transitions. [2020-10-14 19:29:25,535 INFO L78 Accepts]: Start accepts. Automaton has 14178 states and 20447 transitions. Word has length 859 [2020-10-14 19:29:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:29:25,536 INFO L479 AbstractCegarLoop]: Abstraction has 14178 states and 20447 transitions. [2020-10-14 19:29:25,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:29:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 14178 states and 20447 transitions. [2020-10-14 19:29:25,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2020-10-14 19:29:25,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:29:25,583 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:29:25,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:29:25,584 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:29:25,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:29:25,585 INFO L82 PathProgramCache]: Analyzing trace with hash 85982082, now seen corresponding path program 1 times [2020-10-14 19:29:25,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:29:25,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023506873] [2020-10-14 19:29:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:29:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:25,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:30,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:30,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 959 [2020-10-14 19:29:30,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:29:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-14 19:29:30,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:30,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:29:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 19:29:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 664 [2020-10-14 19:29:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:32,579 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-14 19:29:32,752 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-14 19:29:32,918 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-14 19:29:33,073 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-10-14 19:29:33,301 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 51 [2020-10-14 19:29:33,701 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 51 [2020-10-14 19:29:33,992 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 47 [2020-10-14 19:29:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:29:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:34,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:34,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:29:34,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:29:34,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:34,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:34,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:29:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:34,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:34,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:34,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:29:34,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:34,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:29:34,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:34,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:34,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:29:34,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:34,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:29:34,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:29:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 19:29:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:34,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:34,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:29:34,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 19:29:34,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:29:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 19:29:34,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:29:34,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:29:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:29:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:29:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 19:29:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:29:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 19:29:41,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023506873] [2020-10-14 19:29:41,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:29:41,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:29:41,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559976704] [2020-10-14 19:29:41,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:29:41,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:29:41,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:29:41,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:29:41,553 INFO L87 Difference]: Start difference. First operand 14178 states and 20447 transitions. Second operand 17 states. [2020-10-14 19:29:42,856 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-14 19:29:43,052 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-14 19:29:45,857 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-14 19:29:47,631 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-14 19:29:47,992 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2020-10-14 19:29:48,419 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 113 [2020-10-14 19:29:49,284 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2020-10-14 19:29:49,940 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 106 [2020-10-14 19:29:53,495 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 19:29:57,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:29:57,731 INFO L93 Difference]: Finished difference Result 29021 states and 42328 transitions. [2020-10-14 19:29:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:29:57,732 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 941 [2020-10-14 19:29:57,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:29:57,800 INFO L225 Difference]: With dead ends: 29021 [2020-10-14 19:29:57,800 INFO L226 Difference]: Without dead ends: 14849 [2020-10-14 19:29:57,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:29:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14849 states. [2020-10-14 19:29:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14849 to 14835. [2020-10-14 19:29:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14835 states. [2020-10-14 19:29:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14835 states to 14835 states and 21117 transitions. [2020-10-14 19:29:58,138 INFO L78 Accepts]: Start accepts. Automaton has 14835 states and 21117 transitions. Word has length 941 [2020-10-14 19:29:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:29:58,139 INFO L479 AbstractCegarLoop]: Abstraction has 14835 states and 21117 transitions. [2020-10-14 19:29:58,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:29:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14835 states and 21117 transitions. [2020-10-14 19:29:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2020-10-14 19:29:58,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:29:58,186 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:29:58,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:29:58,186 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:29:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:29:58,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1791473153, now seen corresponding path program 1 times [2020-10-14 19:29:58,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:29:58,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307906978] [2020-10-14 19:29:58,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:29:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:29:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:29:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:03,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:03,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-14 19:30:03,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:30:03,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 19:30:03,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:03,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:30:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:30:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 19:30:03,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:03,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:03,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:03,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:03,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:30:03,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:03,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:03,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:03,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:03,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:30:03,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:03,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:30:03,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:03,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:03,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:03,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:03,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:03,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:03,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 19:30:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:03,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:03,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 19:30:03,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:30:03,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:03,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 19:30:03,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:30:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:03,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:03,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 19:30:03,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 19:30:03,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:03,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:30:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:30:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 19:30:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 19:30:04,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307906978] [2020-10-14 19:30:04,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:30:04,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:30:04,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952775529] [2020-10-14 19:30:04,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:30:04,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:04,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:30:04,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:30:04,660 INFO L87 Difference]: Start difference. First operand 14835 states and 21117 transitions. Second operand 7 states. [2020-10-14 19:30:15,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:15,141 INFO L93 Difference]: Finished difference Result 43236 states and 63301 transitions. [2020-10-14 19:30:15,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 19:30:15,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 984 [2020-10-14 19:30:15,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:15,218 INFO L225 Difference]: With dead ends: 43236 [2020-10-14 19:30:15,219 INFO L226 Difference]: Without dead ends: 28407 [2020-10-14 19:30:15,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:30:15,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28407 states. [2020-10-14 19:30:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28407 to 23380. [2020-10-14 19:30:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23380 states. [2020-10-14 19:30:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23380 states to 23380 states and 32339 transitions. [2020-10-14 19:30:15,750 INFO L78 Accepts]: Start accepts. Automaton has 23380 states and 32339 transitions. Word has length 984 [2020-10-14 19:30:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:15,751 INFO L479 AbstractCegarLoop]: Abstraction has 23380 states and 32339 transitions. [2020-10-14 19:30:15,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:30:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 23380 states and 32339 transitions. [2020-10-14 19:30:15,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2020-10-14 19:30:15,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:15,800 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:15,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:30:15,800 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:15,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1023044250, now seen corresponding path program 1 times [2020-10-14 19:30:15,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:15,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926666848] [2020-10-14 19:30:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:18,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:20,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:20,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1038 [2020-10-14 19:30:20,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:30:20,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 19:30:20,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:20,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:30:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 19:30:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 776 [2020-10-14 19:30:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:21,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:21,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:21,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:21,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:21,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:21,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:30:21,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:21,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:21,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:21,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:21,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:21,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:30:21,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:21,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:30:21,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:21,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:21,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 19:30:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:21,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:21,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 19:30:21,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 19:30:21,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:21,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 19:30:21,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 19:30:22,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926666848] [2020-10-14 19:30:22,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:30:22,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:30:22,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079018880] [2020-10-14 19:30:22,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:30:22,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:22,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:30:22,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:30:22,188 INFO L87 Difference]: Start difference. First operand 23380 states and 32339 transitions. Second operand 5 states. [2020-10-14 19:30:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:31,501 INFO L93 Difference]: Finished difference Result 56874 states and 81468 transitions. [2020-10-14 19:30:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:30:31,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1020 [2020-10-14 19:30:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:31,617 INFO L225 Difference]: With dead ends: 56874 [2020-10-14 19:30:31,617 INFO L226 Difference]: Without dead ends: 33500 [2020-10-14 19:30:31,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 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 19:30:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33500 states. [2020-10-14 19:30:32,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33500 to 32656. [2020-10-14 19:30:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32656 states. [2020-10-14 19:30:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32656 states to 32656 states and 46106 transitions. [2020-10-14 19:30:32,301 INFO L78 Accepts]: Start accepts. Automaton has 32656 states and 46106 transitions. Word has length 1020 [2020-10-14 19:30:32,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:32,302 INFO L479 AbstractCegarLoop]: Abstraction has 32656 states and 46106 transitions. [2020-10-14 19:30:32,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:30:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 32656 states and 46106 transitions. [2020-10-14 19:30:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2020-10-14 19:30:32,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:32,365 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:30:32,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:30:32,365 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:32,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:32,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1774523487, now seen corresponding path program 1 times [2020-10-14 19:30:32,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:32,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643425484] [2020-10-14 19:30:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:33,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:37,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:37,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1070 [2020-10-14 19:30:37,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:30:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 19:30:37,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:37,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:30:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 19:30:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 19:30:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:37,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:37,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:37,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:37,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:30:37,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:37,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:37,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:37,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:37,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:37,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:37,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:30:37,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 19:30:37,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:37,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:30:37,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:30:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:37,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:37,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:37,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:30:37,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:30:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 19:30:37,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:37,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 19:30:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:37,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 19:30:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:38,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:38,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 19:30:38,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 19:30:38,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:38,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:30:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:30:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 19:30:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:30:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 376 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-14 19:30:38,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643425484] [2020-10-14 19:30:38,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:30:38,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:30:38,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433483746] [2020-10-14 19:30:38,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:30:38,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:38,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:30:38,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:30:38,612 INFO L87 Difference]: Start difference. First operand 32656 states and 46106 transitions. Second operand 8 states. [2020-10-14 19:30:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:54,971 INFO L93 Difference]: Finished difference Result 88224 states and 124510 transitions. [2020-10-14 19:30:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:30:54,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1050 [2020-10-14 19:30:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:55,135 INFO L225 Difference]: With dead ends: 88224 [2020-10-14 19:30:55,136 INFO L226 Difference]: Without dead ends: 55574 [2020-10-14 19:30:55,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:30:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55574 states. [2020-10-14 19:30:55,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55574 to 47112. [2020-10-14 19:30:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47112 states. [2020-10-14 19:30:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47112 states to 47112 states and 59122 transitions. [2020-10-14 19:30:55,930 INFO L78 Accepts]: Start accepts. Automaton has 47112 states and 59122 transitions. Word has length 1050 [2020-10-14 19:30:55,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:55,930 INFO L479 AbstractCegarLoop]: Abstraction has 47112 states and 59122 transitions. [2020-10-14 19:30:55,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:30:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 47112 states and 59122 transitions. [2020-10-14 19:30:55,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1327 [2020-10-14 19:30:55,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:55,999 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:30:55,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:30:55,999 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:56,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1068863892, now seen corresponding path program 1 times [2020-10-14 19:30:56,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:56,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89809648] [2020-10-14 19:30:56,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1352 [2020-10-14 19:31:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:31:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-14 19:31:01,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:31:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 353 [2020-10-14 19:31:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 223 [2020-10-14 19:31:01,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:01,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:31:01,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:01,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:31:01,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:31:01,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 19:31:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 19:31:01,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:01,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:31:01,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:01,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 19:31:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:31:01,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:31:01,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:01,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 19:31:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 19:31:01,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:31:01,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:01,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 19:31:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 19:31:01,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:01,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 19:31:01,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 19:31:01,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-10-14 19:31:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:01,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:01,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 19:31:01,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:01,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 19:31:01,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:01,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:31:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:31:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-14 19:31:01,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 877 proven. 2 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2020-10-14 19:31:02,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89809648] [2020-10-14 19:31:02,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:02,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:31:02,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145920340] [2020-10-14 19:31:02,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:31:02,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:02,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:31:02,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:31:02,777 INFO L87 Difference]: Start difference. First operand 47112 states and 59122 transitions. Second operand 7 states. [2020-10-14 19:31:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:15,235 INFO L93 Difference]: Finished difference Result 124177 states and 158822 transitions. [2020-10-14 19:31:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:31:15,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1326 [2020-10-14 19:31:15,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:15,512 INFO L225 Difference]: With dead ends: 124177 [2020-10-14 19:31:15,513 INFO L226 Difference]: Without dead ends: 77071 [2020-10-14 19:31:15,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:31:15,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77071 states. [2020-10-14 19:31:16,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77071 to 75235. [2020-10-14 19:31:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75235 states. [2020-10-14 19:31:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75235 states to 75235 states and 93923 transitions. [2020-10-14 19:31:17,052 INFO L78 Accepts]: Start accepts. Automaton has 75235 states and 93923 transitions. Word has length 1326 [2020-10-14 19:31:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:17,053 INFO L479 AbstractCegarLoop]: Abstraction has 75235 states and 93923 transitions. [2020-10-14 19:31:17,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:31:17,053 INFO L276 IsEmpty]: Start isEmpty. Operand 75235 states and 93923 transitions. [2020-10-14 19:31:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2209 [2020-10-14 19:31:17,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:17,183 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:31:17,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:31:17,183 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:17,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:17,184 INFO L82 PathProgramCache]: Analyzing trace with hash 116271875, now seen corresponding path program 1 times [2020-10-14 19:31:17,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:17,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906866101] [2020-10-14 19:31:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking...