/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:20:47,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:20:47,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:20:47,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:20:47,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:20:47,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:20:47,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:20:47,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:20:47,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:20:47,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:20:47,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:20:47,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:20:47,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:20:47,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:20:47,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:20:47,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:20:47,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:20:47,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:20:47,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:20:47,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:20:47,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:20:47,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:20:47,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:20:47,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:20:47,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:20:47,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:20:47,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:20:47,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:20:47,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:20:47,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:20:47,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:20:47,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:20:47,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:20:47,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:20:47,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:20:47,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:20:47,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:20:47,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:20:47,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:20:47,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:20:47,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:20:47,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:20:47,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:20:47,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:20:47,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:20:47,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:20:47,228 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:20:47,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:20:47,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:20:47,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:20:47,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:20:47,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:20:47,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:20:47,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:20:47,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:20:47,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:20:47,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:20:47,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:20:47,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:20:47,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:20:47,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:20:47,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:20:47,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:20:47,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:20:47,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:20:47,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:20:47,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:20:47,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:20:47,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:20:47,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:20:47,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:20:47,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:20:47,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:20:47,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:20:47,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:20:47,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:20:47,558 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:20:47,559 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2020-10-13 08:20:47,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/609e43abe/fc78ef588d264e04ab3bdb07a117b3fe/FLAG8a789d433 [2020-10-13 08:20:48,434 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:20:48,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2020-10-13 08:20:48,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/609e43abe/fc78ef588d264e04ab3bdb07a117b3fe/FLAG8a789d433 [2020-10-13 08:20:48,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/609e43abe/fc78ef588d264e04ab3bdb07a117b3fe [2020-10-13 08:20:48,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:20:48,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:20:48,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:20:48,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:20:48,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:20:48,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:20:48" (1/1) ... [2020-10-13 08:20:48,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:48, skipping insertion in model container [2020-10-13 08:20:48,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:20:48" (1/1) ... [2020-10-13 08:20:48,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:20:49,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:20:50,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:20:50,564 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:20:51,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:20:51,167 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:20:51,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51 WrapperNode [2020-10-13 08:20:51,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:20:51,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:20:51,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:20:51,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:20:51,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51" (1/1) ... [2020-10-13 08:20:51,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51" (1/1) ... [2020-10-13 08:20:51,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51" (1/1) ... [2020-10-13 08:20:51,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51" (1/1) ... [2020-10-13 08:20:51,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51" (1/1) ... [2020-10-13 08:20:51,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51" (1/1) ... [2020-10-13 08:20:51,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51" (1/1) ... [2020-10-13 08:20:51,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:20:51,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:20:51,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:20:51,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:20:51,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:20:51,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:20:51,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:20:51,511 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:20:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:20:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:20:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:20:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:20:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:20:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:20:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:20:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:20:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:20:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:20:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:20:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:20:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:20:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:20:56,684 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:20:56,685 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:20:56,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:20:56 BoogieIcfgContainer [2020-10-13 08:20:56,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:20:56,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:20:56,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:20:56,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:20:56,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:20:48" (1/3) ... [2020-10-13 08:20:56,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db2fee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:20:56, skipping insertion in model container [2020-10-13 08:20:56,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:20:51" (2/3) ... [2020-10-13 08:20:56,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db2fee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:20:56, skipping insertion in model container [2020-10-13 08:20:56,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:20:56" (3/3) ... [2020-10-13 08:20:56,724 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label29.c [2020-10-13 08:20:56,738 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:20:56,752 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:20:56,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:20:56,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:20:56,802 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:20:56,802 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:20:56,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:20:56,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:20:56,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:20:56,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:20:56,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:20:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:20:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 08:20:56,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:56,855 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] [2020-10-13 08:20:56,856 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:56,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:56,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1364317718, now seen corresponding path program 1 times [2020-10-13 08:20:56,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:56,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066400392] [2020-10-13 08:20:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:57,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:57,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 08:20:57,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:57,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-13 08:20:57,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:20:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:20:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:20:57,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:20:57,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:57,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:57,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:57,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:57,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:20:57,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:20:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:20:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:20:57,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066400392] [2020-10-13 08:20:57,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:20:57,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:20:57,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970229349] [2020-10-13 08:20:57,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:20:57,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:57,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:20:57,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:20:57,883 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:21:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:07,001 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:21:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:07,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-13 08:21:07,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:07,058 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:21:07,059 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:21:07,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:21:07,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:21:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:21:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-13 08:21:07,389 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 61 [2020-10-13 08:21:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:07,390 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-13 08:21:07,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:21:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-13 08:21:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 08:21:07,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:07,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:21:07,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:21:07,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:07,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2054853353, now seen corresponding path program 1 times [2020-10-13 08:21:07,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:07,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756428056] [2020-10-13 08:21:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:08,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:08,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 08:21:08,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:21:08,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1244 [2020-10-13 08:21:08,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:21:08,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:21:08,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:08,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:08,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:08,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:08,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:21:08,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:08,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:08,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:08,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:08,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:21:08,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:21:08,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:21:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:21:09,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756428056] [2020-10-13 08:21:09,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:09,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:09,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144934683] [2020-10-13 08:21:09,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:09,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:09,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:09,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:09,020 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-13 08:21:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:18,545 INFO L93 Difference]: Finished difference Result 4668 states and 8253 transitions. [2020-10-13 08:21:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:18,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 08:21:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:18,562 INFO L225 Difference]: With dead ends: 4668 [2020-10-13 08:21:18,562 INFO L226 Difference]: Without dead ends: 3121 [2020-10-13 08:21:18,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:21:18,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2020-10-13 08:21:18,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3109. [2020-10-13 08:21:18,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:21:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4586 transitions. [2020-10-13 08:21:18,644 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4586 transitions. Word has length 130 [2020-10-13 08:21:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:18,645 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4586 transitions. [2020-10-13 08:21:18,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:21:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4586 transitions. [2020-10-13 08:21:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 08:21:18,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:18,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:21:18,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:21:18,648 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:18,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:18,649 INFO L82 PathProgramCache]: Analyzing trace with hash -631420861, now seen corresponding path program 1 times [2020-10-13 08:21:18,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:18,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571859770] [2020-10-13 08:21:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:19,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:19,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:21:19,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:21:19,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-13 08:21:19,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:21:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:21:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:19,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:19,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:19,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:19,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:21:19,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:19,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:20,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:20,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:20,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:21:20,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:21:20,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:21:20,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:21:20,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571859770] [2020-10-13 08:21:20,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:20,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:20,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885092564] [2020-10-13 08:21:20,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:20,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:20,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:20,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:20,173 INFO L87 Difference]: Start difference. First operand 3109 states and 4586 transitions. Second operand 5 states. [2020-10-13 08:21:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:27,075 INFO L93 Difference]: Finished difference Result 6271 states and 9259 transitions. [2020-10-13 08:21:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:27,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-13 08:21:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:27,097 INFO L225 Difference]: With dead ends: 6271 [2020-10-13 08:21:27,098 INFO L226 Difference]: Without dead ends: 3121 [2020-10-13 08:21:27,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:21:27,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2020-10-13 08:21:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3109. [2020-10-13 08:21:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:21:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4334 transitions. [2020-10-13 08:21:27,236 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4334 transitions. Word has length 136 [2020-10-13 08:21:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:27,236 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4334 transitions. [2020-10-13 08:21:27,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:21:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4334 transitions. [2020-10-13 08:21:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 08:21:27,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:27,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:21:27,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:21:27,241 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:27,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:27,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1406505186, now seen corresponding path program 1 times [2020-10-13 08:21:27,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:27,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751048307] [2020-10-13 08:21:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:27,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:28,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:28,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:21:28,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:21:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-10-13 08:21:28,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:21:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:21:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:21:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:28,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:28,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:28,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:28,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:21:28,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:21:28,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:21:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:21:28,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751048307] [2020-10-13 08:21:28,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:28,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:28,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427352093] [2020-10-13 08:21:28,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:28,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:28,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:28,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:28,408 INFO L87 Difference]: Start difference. First operand 3109 states and 4334 transitions. Second operand 5 states. [2020-10-13 08:21:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:38,467 INFO L93 Difference]: Finished difference Result 9337 states and 13222 transitions. [2020-10-13 08:21:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:38,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-13 08:21:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:38,506 INFO L225 Difference]: With dead ends: 9337 [2020-10-13 08:21:38,506 INFO L226 Difference]: Without dead ends: 6234 [2020-10-13 08:21:38,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:21:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2020-10-13 08:21:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 6218. [2020-10-13 08:21:38,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-10-13 08:21:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 8252 transitions. [2020-10-13 08:21:38,699 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 8252 transitions. Word has length 137 [2020-10-13 08:21:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:38,701 INFO L479 AbstractCegarLoop]: Abstraction has 6218 states and 8252 transitions. [2020-10-13 08:21:38,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:21:38,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 8252 transitions. [2020-10-13 08:21:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 08:21:38,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:38,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:21:38,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:21:38,708 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:38,709 INFO L82 PathProgramCache]: Analyzing trace with hash 229996987, now seen corresponding path program 1 times [2020-10-13 08:21:38,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:38,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242375867] [2020-10-13 08:21:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:38,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:38,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:39,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:39,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 08:21:39,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:21:39,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-13 08:21:39,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:21:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:21:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:39,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:39,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:39,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:39,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:21:39,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:39,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:39,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:39,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:21:39,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:39,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 08:21:39,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:21:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:21:40,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242375867] [2020-10-13 08:21:40,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:40,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:40,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845852747] [2020-10-13 08:21:40,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:40,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:40,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:40,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:40,042 INFO L87 Difference]: Start difference. First operand 6218 states and 8252 transitions. Second operand 5 states. [2020-10-13 08:21:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:51,495 INFO L93 Difference]: Finished difference Result 15555 states and 21437 transitions. [2020-10-13 08:21:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:51,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 08:21:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:51,549 INFO L225 Difference]: With dead ends: 15555 [2020-10-13 08:21:51,549 INFO L226 Difference]: Without dead ends: 9343 [2020-10-13 08:21:51,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:21:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9343 states. [2020-10-13 08:21:51,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9343 to 9335. [2020-10-13 08:21:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9335 states. [2020-10-13 08:21:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9335 states to 9335 states and 11980 transitions. [2020-10-13 08:21:51,820 INFO L78 Accepts]: Start accepts. Automaton has 9335 states and 11980 transitions. Word has length 164 [2020-10-13 08:21:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:51,821 INFO L479 AbstractCegarLoop]: Abstraction has 9335 states and 11980 transitions. [2020-10-13 08:21:51,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:21:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 9335 states and 11980 transitions. [2020-10-13 08:21:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 08:21:51,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:51,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:21:51,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:21:51,828 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash 18236235, now seen corresponding path program 1 times [2020-10-13 08:21:51,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:51,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163726484] [2020-10-13 08:21:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:52,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:53,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:53,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 08:21:53,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:21:53,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-13 08:21:53,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 08:21:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:21:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:53,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:53,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:53,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:53,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:53,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:21:53,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:53,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:53,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:53,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:53,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:53,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 08:21:53,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:21:53,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 08:21:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:21:53,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163726484] [2020-10-13 08:21:53,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:53,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:53,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253415965] [2020-10-13 08:21:53,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:53,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:53,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:53,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:53,419 INFO L87 Difference]: Start difference. First operand 9335 states and 11980 transitions. Second operand 5 states. [2020-10-13 08:22:04,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:04,815 INFO L93 Difference]: Finished difference Result 20225 states and 26729 transitions. [2020-10-13 08:22:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:04,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 08:22:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:04,864 INFO L225 Difference]: With dead ends: 20225 [2020-10-13 08:22:04,864 INFO L226 Difference]: Without dead ends: 10896 [2020-10-13 08:22:04,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:04,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10896 states. [2020-10-13 08:22:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10896 to 10888. [2020-10-13 08:22:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10888 states. [2020-10-13 08:22:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10888 states to 10888 states and 13796 transitions. [2020-10-13 08:22:05,088 INFO L78 Accepts]: Start accepts. Automaton has 10888 states and 13796 transitions. Word has length 172 [2020-10-13 08:22:05,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:05,088 INFO L479 AbstractCegarLoop]: Abstraction has 10888 states and 13796 transitions. [2020-10-13 08:22:05,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 10888 states and 13796 transitions. [2020-10-13 08:22:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 08:22:05,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:05,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:05,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:22:05,093 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash -141006017, now seen corresponding path program 1 times [2020-10-13 08:22:05,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:05,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211085089] [2020-10-13 08:22:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:06,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:06,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 08:22:06,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-13 08:22:06,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-13 08:22:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:22:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:06,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:22:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:06,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:06,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:06,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:22:06,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:06,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:22:06,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 08:22:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:06,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211085089] [2020-10-13 08:22:06,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:06,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:22:06,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339083816] [2020-10-13 08:22:06,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:22:06,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:06,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:22:06,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:06,772 INFO L87 Difference]: Start difference. First operand 10888 states and 13796 transitions. Second operand 6 states. [2020-10-13 08:22:22,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:22,312 INFO L93 Difference]: Finished difference Result 27235 states and 35298 transitions. [2020-10-13 08:22:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:22:22,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-13 08:22:22,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:22,379 INFO L225 Difference]: With dead ends: 27235 [2020-10-13 08:22:22,379 INFO L226 Difference]: Without dead ends: 16353 [2020-10-13 08:22:22,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:22:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16353 states. [2020-10-13 08:22:22,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16353 to 16334. [2020-10-13 08:22:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16334 states. [2020-10-13 08:22:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16334 states to 16334 states and 20803 transitions. [2020-10-13 08:22:22,773 INFO L78 Accepts]: Start accepts. Automaton has 16334 states and 20803 transitions. Word has length 182 [2020-10-13 08:22:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:22,774 INFO L479 AbstractCegarLoop]: Abstraction has 16334 states and 20803 transitions. [2020-10-13 08:22:22,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:22:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 16334 states and 20803 transitions. [2020-10-13 08:22:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 08:22:22,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:22,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:22,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:22:22,781 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:22,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1192838761, now seen corresponding path program 1 times [2020-10-13 08:22:22,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:22,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116659119] [2020-10-13 08:22:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:22,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:24,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:24,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 08:22:24,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:24,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-10-13 08:22:24,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-13 08:22:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:22:24,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:24,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:24,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:24,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:24,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:22:24,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:24,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:24,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 08:22:24,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:24,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 08:22:24,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 08:22:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:24,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116659119] [2020-10-13 08:22:24,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:24,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:24,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314320534] [2020-10-13 08:22:24,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:24,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:24,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:24,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:24,873 INFO L87 Difference]: Start difference. First operand 16334 states and 20803 transitions. Second operand 5 states. [2020-10-13 08:22:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:35,847 INFO L93 Difference]: Finished difference Result 48950 states and 63989 transitions. [2020-10-13 08:22:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:35,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-13 08:22:35,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:35,981 INFO L225 Difference]: With dead ends: 48950 [2020-10-13 08:22:35,981 INFO L226 Difference]: Without dead ends: 32622 [2020-10-13 08:22:36,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:36,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32622 states. [2020-10-13 08:22:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32622 to 32603. [2020-10-13 08:22:36,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32603 states. [2020-10-13 08:22:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32603 states to 32603 states and 39978 transitions. [2020-10-13 08:22:36,733 INFO L78 Accepts]: Start accepts. Automaton has 32603 states and 39978 transitions. Word has length 194 [2020-10-13 08:22:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:36,735 INFO L479 AbstractCegarLoop]: Abstraction has 32603 states and 39978 transitions. [2020-10-13 08:22:36,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 32603 states and 39978 transitions. [2020-10-13 08:22:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-13 08:22:36,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:36,795 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:22:36,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:22:36,795 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:36,796 INFO L82 PathProgramCache]: Analyzing trace with hash -989747852, now seen corresponding path program 1 times [2020-10-13 08:22:36,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:36,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858213748] [2020-10-13 08:22:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:41,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:41,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-13 08:22:41,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:22:41,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 08:22:41,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 485 [2020-10-13 08:22:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:22:41,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:42,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:42,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:42,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:42,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:22:42,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:42,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:42,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:42,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:42,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:22:42,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:22:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 08:22:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:42,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:42,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:42,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-13 08:22:42,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:42,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-13 08:22:42,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:42,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 365 [2020-10-13 08:22:42,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:42,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:22:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:42,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:22:42,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 08:22:42,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:22:42,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 08:22:43,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858213748] [2020-10-13 08:22:43,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:43,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:43,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208072109] [2020-10-13 08:22:43,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:43,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:43,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:43,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:43,328 INFO L87 Difference]: Start difference. First operand 32603 states and 39978 transitions. Second operand 5 states. [2020-10-13 08:22:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:57,906 INFO L93 Difference]: Finished difference Result 72179 states and 90629 transitions. [2020-10-13 08:22:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:57,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 535 [2020-10-13 08:22:57,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:58,032 INFO L225 Difference]: With dead ends: 72179 [2020-10-13 08:22:58,032 INFO L226 Difference]: Without dead ends: 39582 [2020-10-13 08:22:58,073 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 [2020-10-13 08:22:58,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39582 states. [2020-10-13 08:22:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39582 to 39574. [2020-10-13 08:22:58,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39574 states. [2020-10-13 08:22:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39574 states to 39574 states and 48393 transitions. [2020-10-13 08:22:58,688 INFO L78 Accepts]: Start accepts. Automaton has 39574 states and 48393 transitions. Word has length 535 [2020-10-13 08:22:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:58,689 INFO L479 AbstractCegarLoop]: Abstraction has 39574 states and 48393 transitions. [2020-10-13 08:22:58,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 39574 states and 48393 transitions. [2020-10-13 08:22:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-13 08:22:58,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:58,820 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, 2, 2, 2, 2, 2, 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] [2020-10-13 08:22:58,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:22:58,821 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:58,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:58,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1121179070, now seen corresponding path program 1 times [2020-10-13 08:22:58,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:58,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635289686] [2020-10-13 08:22:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 851 [2020-10-13 08:23:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:23:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 08:23:04,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:23:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:23:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:23:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:04,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:04,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:04,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 08:23:04,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:23:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:04,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:04,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:23:04,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:23:04,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:23:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:23:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:04,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 08:23:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:05,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:05,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:23:05,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-13 08:23:05,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:23:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:05,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:05,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:23:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:05,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:05,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:23:05,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 08:23:05,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:23:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:05,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:05,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:23:05,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:05,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:23:05,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:05,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 108 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:23:06,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635289686] [2020-10-13 08:23:06,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:06,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:23:06,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660258169] [2020-10-13 08:23:06,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:23:06,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:06,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:23:06,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:23:06,238 INFO L87 Difference]: Start difference. First operand 39574 states and 48393 transitions. Second operand 7 states. [2020-10-13 08:23:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:24,583 INFO L93 Difference]: Finished difference Result 91281 states and 113606 transitions. [2020-10-13 08:23:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:23:24,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 835 [2020-10-13 08:23:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:24,746 INFO L225 Difference]: With dead ends: 91281 [2020-10-13 08:23:24,746 INFO L226 Difference]: Without dead ends: 51713 [2020-10-13 08:23:24,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:23:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51713 states. [2020-10-13 08:23:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51713 to 50923. [2020-10-13 08:23:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50923 states. [2020-10-13 08:23:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50923 states to 50923 states and 62576 transitions. [2020-10-13 08:23:26,144 INFO L78 Accepts]: Start accepts. Automaton has 50923 states and 62576 transitions. Word has length 835 [2020-10-13 08:23:26,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:26,145 INFO L479 AbstractCegarLoop]: Abstraction has 50923 states and 62576 transitions. [2020-10-13 08:23:26,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:23:26,145 INFO L276 IsEmpty]: Start isEmpty. Operand 50923 states and 62576 transitions. [2020-10-13 08:23:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2020-10-13 08:23:26,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:26,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:26,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:23:26,324 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:26,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:26,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1790308178, now seen corresponding path program 1 times [2020-10-13 08:23:26,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:26,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616199912] [2020-10-13 08:23:26,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:31,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:31,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 959 [2020-10-13 08:23:31,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:23:31,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-13 08:23:31,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:23:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:23:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 08:23:31,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:31,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:31,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:31,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:31,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:23:31,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:23:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:31,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:31,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:31,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:23:31,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 08:23:31,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:23:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:23:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:23:31,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 08:23:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:31,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:31,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:31,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:23:31,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:31,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:23:31,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:23:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:32,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 08:23:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:32,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:32,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:23:32,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-13 08:23:32,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:23:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:32,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:23:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:32,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:32,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:23:32,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:32,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:23:32,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:32,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:23:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:32,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:32,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:23:32,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:23:32,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 162 proven. 164 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 08:23:33,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616199912] [2020-10-13 08:23:33,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:33,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:23:33,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641758379] [2020-10-13 08:23:33,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:23:33,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:33,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:23:33,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:23:33,538 INFO L87 Difference]: Start difference. First operand 50923 states and 62576 transitions. Second operand 7 states. [2020-10-13 08:23:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:51,000 INFO L93 Difference]: Finished difference Result 109500 states and 142863 transitions. [2020-10-13 08:23:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:23:51,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 941 [2020-10-13 08:23:51,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:51,214 INFO L225 Difference]: With dead ends: 109500 [2020-10-13 08:23:51,214 INFO L226 Difference]: Without dead ends: 59350 [2020-10-13 08:23:51,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:23:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59350 states. [2020-10-13 08:23:52,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59350 to 58468. [2020-10-13 08:23:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58468 states. [2020-10-13 08:23:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58468 states to 58468 states and 74045 transitions. [2020-10-13 08:23:52,627 INFO L78 Accepts]: Start accepts. Automaton has 58468 states and 74045 transitions. Word has length 941 [2020-10-13 08:23:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:52,628 INFO L479 AbstractCegarLoop]: Abstraction has 58468 states and 74045 transitions. [2020-10-13 08:23:52,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:23:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 58468 states and 74045 transitions. [2020-10-13 08:23:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-13 08:23:52,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:52,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:52,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:23:52,748 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:52,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1168408970, now seen corresponding path program 1 times [2020-10-13 08:23:52,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:52,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629546447] [2020-10-13 08:23:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:53,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:58,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:58,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 991 [2020-10-13 08:23:58,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:23:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 08:23:58,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:23:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:23:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:23:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:58,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:58,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:58,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:23:58,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:23:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:58,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:58,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:58,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:58,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:23:58,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 08:23:58,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:23:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:23:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:23:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:58,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:58,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:58,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:23:58,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:58,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:23:58,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 08:23:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 08:23:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:59,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:59,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:59,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:23:59,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-13 08:23:59,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:23:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:59,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:23:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:59,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:59,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:23:59,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:59,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:23:59,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:23:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:59,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:59,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:23:59,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:23:59,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 162 proven. 211 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 08:24:00,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629546447] [2020-10-13 08:24:00,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:00,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:24:00,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350322322] [2020-10-13 08:24:00,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:24:00,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:00,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:24:00,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:24:00,967 INFO L87 Difference]: Start difference. First operand 58468 states and 74045 transitions. Second operand 8 states.