/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:40:54,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:40:54,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:40:54,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:40:54,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:40:54,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:40:54,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:40:54,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:40:54,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:40:54,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:40:54,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:40:54,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:40:54,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:40:54,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:40:54,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:40:54,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:40:54,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:40:54,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:40:54,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:40:54,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:40:54,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:40:54,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:40:54,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:40:54,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:40:54,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:40:54,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:40:54,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:40:54,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:40:54,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:40:54,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:40:54,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:40:54,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:40:54,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:40:54,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:40:54,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:40:54,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:40:54,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:40:54,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:40:54,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:40:54,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:40:54,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:40:54,209 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 [2020-10-12 11:40:54,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:40:54,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:40:54,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:40:54,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:40:54,252 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:40:54,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:40:54,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:40:54,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:40:54,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:40:54,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:40:54,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:40:54,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:40:54,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:40:54,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:40:54,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:40:54,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:40:54,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:40:54,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:40:54,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:40:54,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:40:54,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:40:54,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:40:54,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:40:54,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:40:54,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:40:54,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:40:54,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:40:54,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:40:54,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:40:54,258 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:40:54,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:40:54,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:40:54,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:40:54,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:40:54,561 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:40:54,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label38.c [2020-10-12 11:40:54,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f088b38e/1c04dfd852e34a07a64dca19caceb245/FLAGa377cf5a3 [2020-10-12 11:40:55,532 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:40:55,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label38.c [2020-10-12 11:40:55,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f088b38e/1c04dfd852e34a07a64dca19caceb245/FLAGa377cf5a3 [2020-10-12 11:40:55,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f088b38e/1c04dfd852e34a07a64dca19caceb245 [2020-10-12 11:40:56,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:40:56,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:40:56,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:40:56,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:40:56,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:40:56,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:40:55" (1/1) ... [2020-10-12 11:40:56,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea0c575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:56, skipping insertion in model container [2020-10-12 11:40:56,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:40:55" (1/1) ... [2020-10-12 11:40:56,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:40:56,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:40:57,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:40:57,753 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:40:58,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:40:58,568 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:40:58,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58 WrapperNode [2020-10-12 11:40:58,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:40:58,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:40:58,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:40:58,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:40:58,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58" (1/1) ... [2020-10-12 11:40:58,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58" (1/1) ... [2020-10-12 11:40:58,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58" (1/1) ... [2020-10-12 11:40:58,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58" (1/1) ... [2020-10-12 11:40:58,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58" (1/1) ... [2020-10-12 11:40:58,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58" (1/1) ... [2020-10-12 11:40:58,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58" (1/1) ... [2020-10-12 11:40:58,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:40:58,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:40:58,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:40:58,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:40:58,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58" (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 [2020-10-12 11:40:58,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:40:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:40:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:40:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:40:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:40:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:40:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:40:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:40:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:40:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:40:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:40:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:40:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:40:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:40:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:40:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:40:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:41:03,268 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:41:03,269 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:41:03,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:03 BoogieIcfgContainer [2020-10-12 11:41:03,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:41:03,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:41:03,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:41:03,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:41:03,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:40:55" (1/3) ... [2020-10-12 11:41:03,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3b1d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:03, skipping insertion in model container [2020-10-12 11:41:03,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:40:58" (2/3) ... [2020-10-12 11:41:03,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3b1d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:41:03, skipping insertion in model container [2020-10-12 11:41:03,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:41:03" (3/3) ... [2020-10-12 11:41:03,306 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label38.c [2020-10-12 11:41:03,316 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:41:03,325 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:41:03,339 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:41:03,368 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:41:03,368 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:41:03,368 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:41:03,368 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:41:03,368 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:41:03,369 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:41:03,369 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:41:03,369 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:41:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:41:03,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2020-10-12 11:41:03,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:41:03,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:41:03,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:41:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:41:03,481 INFO L82 PathProgramCache]: Analyzing trace with hash 962900162, now seen corresponding path program 1 times [2020-10-12 11:41:03,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:41:03,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848277736] [2020-10-12 11:41:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:41:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:09,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:09,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 791 [2020-10-12 11:41:09,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:41:09,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-12 11:41:09,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:09,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:41:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:41:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:41:09,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:41:10,690 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-12 11:41:11,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:41:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:11,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:11,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:41:11,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:41:11,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:41:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:41:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:41:15,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848277736] [2020-10-12 11:41:15,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:41:15,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:41:15,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246360940] [2020-10-12 11:41:15,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:41:15,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:41:15,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:41:15,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:41:15,435 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:41:16,321 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:41:18,878 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-12 11:41:20,733 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:41:21,747 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 11:41:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:41:30,375 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:41:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:41:30,379 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 777 [2020-10-12 11:41:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:41:30,450 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:41:30,451 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:41:30,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:41:30,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:41:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:41:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:41:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:41:30,685 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 777 [2020-10-12 11:41:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:41:30,689 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:41:30,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:41:30,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:41:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2020-10-12 11:41:30,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:41:30,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:41:30,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:41:30,724 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:41:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:41:30,725 INFO L82 PathProgramCache]: Analyzing trace with hash 469924817, now seen corresponding path program 1 times [2020-10-12 11:41:30,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:41:30,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541794977] [2020-10-12 11:41:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:41:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:31,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:35,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:35,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 812 [2020-10-12 11:41:36,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:41:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 11:41:36,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:41:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:41:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-12 11:41:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:41:36,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:41:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:36,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:36,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:41:36,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:41:36,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:41:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:41:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:36,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:41:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:36,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:36,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:41:36,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:41:36,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 11:41:36,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:41:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:41:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:41:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:41:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:41:37,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541794977] [2020-10-12 11:41:37,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:41:37,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:41:37,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221732909] [2020-10-12 11:41:37,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:41:37,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:41:37,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:41:37,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:41:37,424 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 6 states. [2020-10-12 11:41:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:41:45,869 INFO L93 Difference]: Finished difference Result 3283 states and 5563 transitions. [2020-10-12 11:41:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:41:45,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 796 [2020-10-12 11:41:45,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:41:45,883 INFO L225 Difference]: With dead ends: 3283 [2020-10-12 11:41:45,883 INFO L226 Difference]: Without dead ends: 2436 [2020-10-12 11:41:45,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:41:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2020-10-12 11:41:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2425. [2020-10-12 11:41:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-10-12 11:41:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3478 transitions. [2020-10-12 11:41:45,957 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3478 transitions. Word has length 796 [2020-10-12 11:41:45,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:41:45,958 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 3478 transitions. [2020-10-12 11:41:45,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:41:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3478 transitions. [2020-10-12 11:41:45,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-12 11:41:45,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:41:45,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:41:45,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:41:45,972 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:41:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:41:45,972 INFO L82 PathProgramCache]: Analyzing trace with hash -940846238, now seen corresponding path program 1 times [2020-10-12 11:41:45,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:41:45,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93092229] [2020-10-12 11:41:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:41:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:51,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:51,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-12 11:41:51,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:41:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 11:41:51,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:41:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 11:41:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 782 [2020-10-12 11:41:51,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:41:51,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:41:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:51,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:51,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:41:51,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:41:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:41:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:41:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:41:51,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:41:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:51,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:51,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:41:51,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:51,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:41:51,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:41:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:41:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:41:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:41:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:41:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:41:51,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:41:51,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:41:51,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:41:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:41:51,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:41:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:41:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:41:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 11:41:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:41:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:41:52,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93092229] [2020-10-12 11:41:52,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:41:52,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:41:52,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508567412] [2020-10-12 11:41:52,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:41:52,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:41:52,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:41:52,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:41:52,901 INFO L87 Difference]: Start difference. First operand 2425 states and 3478 transitions. Second operand 6 states. [2020-10-12 11:42:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:42:05,424 INFO L93 Difference]: Finished difference Result 7530 states and 11879 transitions. [2020-10-12 11:42:05,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:42:05,425 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 804 [2020-10-12 11:42:05,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:42:05,454 INFO L225 Difference]: With dead ends: 7530 [2020-10-12 11:42:05,454 INFO L226 Difference]: Without dead ends: 5838 [2020-10-12 11:42:05,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:42:05,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2020-10-12 11:42:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5838. [2020-10-12 11:42:05,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5838 states. [2020-10-12 11:42:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 8166 transitions. [2020-10-12 11:42:05,600 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 8166 transitions. Word has length 804 [2020-10-12 11:42:05,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:42:05,602 INFO L479 AbstractCegarLoop]: Abstraction has 5838 states and 8166 transitions. [2020-10-12 11:42:05,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:42:05,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 8166 transitions. [2020-10-12 11:42:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2020-10-12 11:42:05,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:42:05,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:42:05,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:42:05,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:42:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:42:05,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1155330138, now seen corresponding path program 1 times [2020-10-12 11:42:05,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:42:05,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645379348] [2020-10-12 11:42:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:42:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:10,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:10,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-12 11:42:10,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:42:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-12 11:42:10,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:42:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 11:42:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 754 [2020-10-12 11:42:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:12,436 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-10-12 11:42:12,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:42:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:12,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:12,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:42:12,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:42:12,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:42:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:42:12,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:42:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:12,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:12,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:42:12,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:42:12,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:42:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:42:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:42:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:12,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:42:12,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:42:12,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:42:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:42:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 11:42:17,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645379348] [2020-10-12 11:42:17,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:42:17,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:42:17,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732713789] [2020-10-12 11:42:17,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:42:17,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:17,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:42:17,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:42:17,684 INFO L87 Difference]: Start difference. First operand 5838 states and 8166 transitions. Second operand 19 states. [2020-10-12 11:42:18,149 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:42:22,965 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:42:32,396 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:42:33,330 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:42:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:42:34,639 INFO L93 Difference]: Finished difference Result 11712 states and 17171 transitions. [2020-10-12 11:42:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 11:42:34,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 811 [2020-10-12 11:42:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:42:34,668 INFO L225 Difference]: With dead ends: 11712 [2020-10-12 11:42:34,669 INFO L226 Difference]: Without dead ends: 6607 [2020-10-12 11:42:34,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:42:34,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2020-10-12 11:42:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6601. [2020-10-12 11:42:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6601 states. [2020-10-12 11:42:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6601 states to 6601 states and 8959 transitions. [2020-10-12 11:42:34,855 INFO L78 Accepts]: Start accepts. Automaton has 6601 states and 8959 transitions. Word has length 811 [2020-10-12 11:42:34,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:42:34,857 INFO L479 AbstractCegarLoop]: Abstraction has 6601 states and 8959 transitions. [2020-10-12 11:42:34,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:42:34,857 INFO L276 IsEmpty]: Start isEmpty. Operand 6601 states and 8959 transitions. [2020-10-12 11:42:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2020-10-12 11:42:34,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:42:34,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:42:34,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:42:34,888 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:42:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:42:34,889 INFO L82 PathProgramCache]: Analyzing trace with hash -551010529, now seen corresponding path program 1 times [2020-10-12 11:42:34,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:42:34,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557861193] [2020-10-12 11:42:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:42:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:35,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:36,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:40,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:40,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 886 [2020-10-12 11:42:40,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:42:40,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-12 11:42:40,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:42:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:42:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 11:42:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:42:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:40,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:40,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:42:40,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:40,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:42:40,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:40,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:42:40,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:40,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:42:40,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:40,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:42:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:40,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:40,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:42:40,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:42:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:42:40,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:42:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:42:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:42:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:42:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:40,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:40,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:40,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:42:40,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:40,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:42:40,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:40,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:42:40,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:42:40,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 11:42:40,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 11:42:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:40,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:40,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:42:40,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:42:40,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:42:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 11:42:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:42:40,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:42:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 86 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:42:41,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557861193] [2020-10-12 11:42:41,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:42:41,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:42:41,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375274712] [2020-10-12 11:42:41,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:42:41,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:41,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:42:41,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:42:41,119 INFO L87 Difference]: Start difference. First operand 6601 states and 8959 transitions. Second operand 8 states. [2020-10-12 11:42:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:42:50,171 INFO L93 Difference]: Finished difference Result 15160 states and 20802 transitions. [2020-10-12 11:42:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:42:50,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 866 [2020-10-12 11:42:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:42:50,205 INFO L225 Difference]: With dead ends: 15160 [2020-10-12 11:42:50,206 INFO L226 Difference]: Without dead ends: 9292 [2020-10-12 11:42:50,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:42:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9292 states. [2020-10-12 11:42:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9292 to 9256. [2020-10-12 11:42:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9256 states. [2020-10-12 11:42:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9256 states to 9256 states and 12269 transitions. [2020-10-12 11:42:50,424 INFO L78 Accepts]: Start accepts. Automaton has 9256 states and 12269 transitions. Word has length 866 [2020-10-12 11:42:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:42:50,425 INFO L479 AbstractCegarLoop]: Abstraction has 9256 states and 12269 transitions. [2020-10-12 11:42:50,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:42:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 9256 states and 12269 transitions. [2020-10-12 11:42:50,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2020-10-12 11:42:50,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:42:50,465 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:42:50,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:42:50,466 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:42:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:42:50,466 INFO L82 PathProgramCache]: Analyzing trace with hash 720992901, now seen corresponding path program 1 times [2020-10-12 11:42:50,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:42:50,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299371077] [2020-10-12 11:42:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:42:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:50,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:50,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:55,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:55,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 893 [2020-10-12 11:42:55,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:42:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 11:42:55,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:42:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:42:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 11:42:55,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:42:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:42:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:55,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:55,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:42:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:42:55,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:42:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:42:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:42:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:42:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:55,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:55,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:42:55,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:42:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 11:42:55,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:42:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:42:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 11:42:55,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:55,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 11:42:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:55,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:55,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:42:55,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:55,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:42:55,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:42:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:42:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 11:42:55,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:42:55,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 11:42:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:42:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:42:56,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:42:56,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:42:56,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:42:56,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 11:42:56,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:42:56,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:42:56,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 11:42:56,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:42:56,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:42:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 92 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:42:56,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299371077] [2020-10-12 11:42:56,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:42:56,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:42:56,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346529958] [2020-10-12 11:42:56,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:42:56,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:42:56,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:42:56,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:42:56,415 INFO L87 Difference]: Start difference. First operand 9256 states and 12269 transitions. Second operand 7 states. [2020-10-12 11:43:08,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:08,009 INFO L93 Difference]: Finished difference Result 25848 states and 36177 transitions. [2020-10-12 11:43:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:43:08,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 873 [2020-10-12 11:43:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:08,084 INFO L225 Difference]: With dead ends: 25848 [2020-10-12 11:43:08,084 INFO L226 Difference]: Without dead ends: 17325 [2020-10-12 11:43:08,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:43:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17325 states. [2020-10-12 11:43:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17325 to 17191. [2020-10-12 11:43:08,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17191 states. [2020-10-12 11:43:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17191 states to 17191 states and 22146 transitions. [2020-10-12 11:43:08,466 INFO L78 Accepts]: Start accepts. Automaton has 17191 states and 22146 transitions. Word has length 873 [2020-10-12 11:43:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:08,467 INFO L479 AbstractCegarLoop]: Abstraction has 17191 states and 22146 transitions. [2020-10-12 11:43:08,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:43:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 17191 states and 22146 transitions. [2020-10-12 11:43:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2020-10-12 11:43:08,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:08,520 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:43:08,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:43:08,520 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:08,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1788844827, now seen corresponding path program 1 times [2020-10-12 11:43:08,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:08,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468835556] [2020-10-12 11:43:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:12,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:13,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:13,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-12 11:43:13,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:43:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-12 11:43:13,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:43:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-12 11:43:13,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 782 [2020-10-12 11:43:13,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:43:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:14,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:14,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:14,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:43:14,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:14,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:14,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:43:14,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:14,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:14,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:43:14,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:43:14,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:14,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:43:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:14,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:14,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:43:14,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:14,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:43:14,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 11:43:14,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 92 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:43:14,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468835556] [2020-10-12 11:43:14,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:14,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:43:14,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198022694] [2020-10-12 11:43:14,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:43:14,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:14,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:43:14,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:43:14,622 INFO L87 Difference]: Start difference. First operand 17191 states and 22146 transitions. Second operand 5 states. [2020-10-12 11:43:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:24,335 INFO L93 Difference]: Finished difference Result 46353 states and 61935 transitions. [2020-10-12 11:43:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:43:24,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 875 [2020-10-12 11:43:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:24,450 INFO L225 Difference]: With dead ends: 46353 [2020-10-12 11:43:24,451 INFO L226 Difference]: Without dead ends: 29895 [2020-10-12 11:43:24,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:43:24,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29895 states. [2020-10-12 11:43:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29895 to 29875. [2020-10-12 11:43:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29875 states. [2020-10-12 11:43:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29875 states to 29875 states and 38240 transitions. [2020-10-12 11:43:25,125 INFO L78 Accepts]: Start accepts. Automaton has 29875 states and 38240 transitions. Word has length 875 [2020-10-12 11:43:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:25,127 INFO L479 AbstractCegarLoop]: Abstraction has 29875 states and 38240 transitions. [2020-10-12 11:43:25,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:43:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand 29875 states and 38240 transitions. [2020-10-12 11:43:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2020-10-12 11:43:25,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:25,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:43:25,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:43:25,195 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:25,195 INFO L82 PathProgramCache]: Analyzing trace with hash -693195811, now seen corresponding path program 1 times [2020-10-12 11:43:25,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:25,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875185715] [2020-10-12 11:43:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:25,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:30,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:30,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 920 [2020-10-12 11:43:30,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:43:30,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 11:43:30,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:43:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-12 11:43:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-12 11:43:30,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:31,736 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 35 [2020-10-12 11:43:32,069 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-12 11:43:32,213 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-12 11:43:32,360 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-12 11:43:32,907 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 34 [2020-10-12 11:43:33,074 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-10-12 11:43:33,402 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 38 [2020-10-12 11:43:33,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:33,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:33,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:33,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:33,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:43:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:33,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:33,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:33,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:33,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:33,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:43:33,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:33,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:33,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:33,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 11:43:33,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:33,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:43:33,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:33,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 11:43:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:33,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:33,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 11:43:33,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:33,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:43:33,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 11:43:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 117 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 11:43:37,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875185715] [2020-10-12 11:43:37,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:43:37,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:43:37,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430283486] [2020-10-12 11:43:37,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:43:37,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:43:37,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:43:37,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:43:37,606 INFO L87 Difference]: Start difference. First operand 29875 states and 38240 transitions. Second operand 17 states. [2020-10-12 11:43:38,451 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:43:38,615 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:43:40,305 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:43:43,321 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-12 11:43:44,850 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 11:43:45,139 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:43:46,412 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-12 11:43:48,029 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-12 11:43:48,184 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:43:48,940 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-12 11:43:51,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:43:51,339 INFO L93 Difference]: Finished difference Result 59536 states and 77056 transitions. [2020-10-12 11:43:51,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:43:51,340 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 900 [2020-10-12 11:43:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:43:51,439 INFO L225 Difference]: With dead ends: 59536 [2020-10-12 11:43:51,439 INFO L226 Difference]: Without dead ends: 30394 [2020-10-12 11:43:51,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:43:51,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30394 states. [2020-10-12 11:43:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30394 to 30384. [2020-10-12 11:43:52,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30384 states. [2020-10-12 11:43:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30384 states to 30384 states and 38761 transitions. [2020-10-12 11:43:52,187 INFO L78 Accepts]: Start accepts. Automaton has 30384 states and 38761 transitions. Word has length 900 [2020-10-12 11:43:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:43:52,188 INFO L479 AbstractCegarLoop]: Abstraction has 30384 states and 38761 transitions. [2020-10-12 11:43:52,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:43:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 30384 states and 38761 transitions. [2020-10-12 11:43:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-12 11:43:52,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:43:52,245 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:43:52,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:43:52,246 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:43:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:43:52,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1634144747, now seen corresponding path program 1 times [2020-10-12 11:43:52,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:43:52,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724686509] [2020-10-12 11:43:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:43:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:52,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:52,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:54,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:57,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:57,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-12 11:43:57,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:43:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 11:43:57,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:43:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-10-12 11:43:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 728 [2020-10-12 11:43:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:59,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:43:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:59,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:59,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:59,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:43:59,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:43:59,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:59,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:43:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:59,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:59,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:43:59,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:43:59,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:59,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:43:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:59,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:59,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:43:59,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:59,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:43:59,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:43:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:59,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:43:59,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:43:59,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:43:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:43:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:43:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:43:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 11:43:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:43:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 11:43:59,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:43:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:43:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:43:59,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-12 11:43:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:44:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 11:44:05,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724686509] [2020-10-12 11:44:05,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:44:05,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 11:44:05,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716535829] [2020-10-12 11:44:05,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 11:44:05,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:44:05,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 11:44:05,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:44:05,633 INFO L87 Difference]: Start difference. First operand 30384 states and 38761 transitions. Second operand 20 states. [2020-10-12 11:44:09,459 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-12 11:44:09,781 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-10-12 11:44:13,805 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-12 11:44:14,120 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2020-10-12 11:44:16,506 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-10-12 11:44:17,710 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-12 11:44:18,002 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-12 11:44:20,311 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-12 11:44:20,581 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-12 11:44:20,792 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 11:44:22,686 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-12 11:44:23,571 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:44:23,751 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-12 11:44:26,419 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-12 11:44:26,701 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-10-12 11:44:28,679 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-12 11:44:31,091 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-12 11:44:32,273 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-12 11:44:32,450 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:44:34,304 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-12 11:44:34,565 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-10-12 11:44:34,716 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 96