/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_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:35:25,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:35:25,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:35:25,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:35:25,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:35:25,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:35:25,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:35:25,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:35:25,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:35:25,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:35:25,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:35:25,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:35:25,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:35:25,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:35:25,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:35:25,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:35:25,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:35:25,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:35:25,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:35:25,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:35:25,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:35:25,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:35:25,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:35:25,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:35:25,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:35:25,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:35:25,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:35:25,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:35:25,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:35:25,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:35:25,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:35:25,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:35:25,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:35:25,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:35:25,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:35:25,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:35:25,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:35:25,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:35:25,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:35:25,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:35:25,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:35:25,168 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 11:35:25,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:35:25,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:35:25,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:35:25,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:35:25,191 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:35:25,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:35:25,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:35:25,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:35:25,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:35:25,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:35:25,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:35:25,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:35:25,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:35:25,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:35:25,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:35:25,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:35:25,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:35:25,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:35:25,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:35:25,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:35:25,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:35:25,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:35:25,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:35:25,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:35:25,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:35:25,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:35:25,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:35:25,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:35:25,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:35:25,196 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 11:35:25,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:35:25,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:35:25,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:35:25,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:35:25,505 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:35:25,506 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label23.c [2020-10-12 11:35:25,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ced807794/35efdb36f3d543e799be6a40de2ea327/FLAGd63f9b766 [2020-10-12 11:35:26,394 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:35:26,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label23.c [2020-10-12 11:35:26,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ced807794/35efdb36f3d543e799be6a40de2ea327/FLAGd63f9b766 [2020-10-12 11:35:26,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ced807794/35efdb36f3d543e799be6a40de2ea327 [2020-10-12 11:35:26,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:35:26,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:35:26,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:35:26,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:35:26,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:35:26,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:35:26" (1/1) ... [2020-10-12 11:35:26,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff28928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:26, skipping insertion in model container [2020-10-12 11:35:26,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:35:26" (1/1) ... [2020-10-12 11:35:26,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:35:27,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:35:28,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:35:28,502 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:35:29,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:35:29,177 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:35:29,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29 WrapperNode [2020-10-12 11:35:29,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:35:29,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:35:29,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:35:29,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:35:29,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29" (1/1) ... [2020-10-12 11:35:29,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29" (1/1) ... [2020-10-12 11:35:29,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29" (1/1) ... [2020-10-12 11:35:29,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29" (1/1) ... [2020-10-12 11:35:29,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29" (1/1) ... [2020-10-12 11:35:29,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29" (1/1) ... [2020-10-12 11:35:29,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29" (1/1) ... [2020-10-12 11:35:29,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:35:29,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:35:29,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:35:29,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:35:29,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29" (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 11:35:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:35:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:35:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:35:29,513 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:35:29,513 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:35:29,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:35:29,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:35:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:35:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:35:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:35:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:35:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:35:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:35:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:35:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:35:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:35:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:35:34,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:35:34,005 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:35:34,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:35:34 BoogieIcfgContainer [2020-10-12 11:35:34,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:35:34,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:35:34,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:35:34,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:35:34,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:35:26" (1/3) ... [2020-10-12 11:35:34,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fdb152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:35:34, skipping insertion in model container [2020-10-12 11:35:34,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:35:29" (2/3) ... [2020-10-12 11:35:34,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fdb152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:35:34, skipping insertion in model container [2020-10-12 11:35:34,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:35:34" (3/3) ... [2020-10-12 11:35:34,031 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label23.c [2020-10-12 11:35:34,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:35:34,049 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:35:34,063 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:35:34,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:35:34,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:35:34,089 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:35:34,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:35:34,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:35:34,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:35:34,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:35:34,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:35:34,125 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:35:34,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-12 11:35:34,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:34,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:35:34,183 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:34,189 INFO L82 PathProgramCache]: Analyzing trace with hash -699559966, now seen corresponding path program 1 times [2020-10-12 11:35:34,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:34,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321240136] [2020-10-12 11:35:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:40,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:40,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-12 11:35:40,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:35:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-12 11:35:40,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:35:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:35:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:35:40,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 11:35:44,360 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-12 11:35:44,502 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-12 11:35:44,735 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-10-12 11:35:44,951 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 32 [2020-10-12 11:35:45,197 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 32 [2020-10-12 11:35:45,474 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 36 [2020-10-12 11:35:45,767 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 34 [2020-10-12 11:35:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:35:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:46,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:46,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:35:46,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:35:46,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:46,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:35:46,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:46,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:35:46,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:50,380 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 11:35:50,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321240136] [2020-10-12 11:35:50,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:35:50,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:35:50,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422023580] [2020-10-12 11:35:50,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:35:50,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:50,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:35:50,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:35:50,405 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:35:51,048 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-12 11:35:51,366 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:35:53,558 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-12 11:35:53,903 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 102 [2020-10-12 11:35:56,000 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-12 11:35:57,146 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-12 11:36:06,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:06,062 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:36:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:36:06,067 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 817 [2020-10-12 11:36:06,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:06,141 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:36:06,142 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:36:06,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:36:06,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:36:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:36:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:36:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:36:06,385 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 817 [2020-10-12 11:36:06,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:06,390 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:36:06,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:36:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:36:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2020-10-12 11:36:06,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:06,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:36:06,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:36:06,453 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:06,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:06,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1466359793, now seen corresponding path program 1 times [2020-10-12 11:36:06,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:06,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058020950] [2020-10-12 11:36:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:06,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:11,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:11,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-12 11:36:11,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:11,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 11:36:11,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:36:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:36:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 846 [2020-10-12 11:36:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:36:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:12,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:12,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:12,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:12,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:36:12,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:12,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:12,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:36:12,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:12,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:12,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:12,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:12,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 11:36:12,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:36:12,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:13,231 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 11:36:13,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058020950] [2020-10-12 11:36:13,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:13,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:36:13,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146446386] [2020-10-12 11:36:13,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:36:13,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:13,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:36:13,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:36:13,237 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 6 states. [2020-10-12 11:36:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:21,672 INFO L93 Difference]: Finished difference Result 3283 states and 5562 transitions. [2020-10-12 11:36:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:36:21,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 836 [2020-10-12 11:36:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:21,695 INFO L225 Difference]: With dead ends: 3283 [2020-10-12 11:36:21,696 INFO L226 Difference]: Without dead ends: 2436 [2020-10-12 11:36:21,700 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 11:36:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2020-10-12 11:36:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2425. [2020-10-12 11:36:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-10-12 11:36:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3489 transitions. [2020-10-12 11:36:21,776 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3489 transitions. Word has length 836 [2020-10-12 11:36:21,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:21,778 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 3489 transitions. [2020-10-12 11:36:21,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:36:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3489 transitions. [2020-10-12 11:36:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2020-10-12 11:36:21,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:21,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:36:21,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:36:21,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:21,792 INFO L82 PathProgramCache]: Analyzing trace with hash -210479238, now seen corresponding path program 1 times [2020-10-12 11:36:21,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:21,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698809429] [2020-10-12 11:36:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:22,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:24,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:26,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 869 [2020-10-12 11:36:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:36:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 11:36:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:36:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 11:36:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 822 [2020-10-12 11:36:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:36:27,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:27,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:36:27,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:27,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:27,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:27,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:27,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:36:27,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:27,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:27,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:27,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:27,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:27,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:36:27,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:36:27,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:27,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:27,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:27,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:36:27,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:28,033 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 11:36:28,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698809429] [2020-10-12 11:36:28,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:28,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:36:28,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828048601] [2020-10-12 11:36:28,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:36:28,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:28,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:36:28,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:36:28,036 INFO L87 Difference]: Start difference. First operand 2425 states and 3489 transitions. Second operand 5 states. [2020-10-12 11:36:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:36,511 INFO L93 Difference]: Finished difference Result 4984 states and 7891 transitions. [2020-10-12 11:36:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:36:36,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 851 [2020-10-12 11:36:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:36,530 INFO L225 Difference]: With dead ends: 4984 [2020-10-12 11:36:36,531 INFO L226 Difference]: Without dead ends: 3292 [2020-10-12 11:36:36,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:36:36,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2020-10-12 11:36:36,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3270. [2020-10-12 11:36:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2020-10-12 11:36:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4598 transitions. [2020-10-12 11:36:36,612 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4598 transitions. Word has length 851 [2020-10-12 11:36:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:36,614 INFO L479 AbstractCegarLoop]: Abstraction has 3270 states and 4598 transitions. [2020-10-12 11:36:36,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:36:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4598 transitions. [2020-10-12 11:36:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2020-10-12 11:36:36,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:36,630 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:36:36,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:36:36,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1188786095, now seen corresponding path program 1 times [2020-10-12 11:36:36,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:36,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736396385] [2020-10-12 11:36:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:36,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:36,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:40,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:41,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:41,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 929 [2020-10-12 11:36:41,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:36:41,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 11:36:41,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:36:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:36:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 11:36:41,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:41,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:42,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:42,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:42,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:42,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:36:42,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:42,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:42,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:36:42,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:36:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:42,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:42,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:42,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:42,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 11:36:42,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:42,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:36:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:36:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:42,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:36:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 11:36:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:36:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:36:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 11:36:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:42,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:42,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:36:42,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 11:36:42,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:36:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 85 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 11:36:43,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736396385] [2020-10-12 11:36:43,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:43,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:36:43,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277762101] [2020-10-12 11:36:43,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:36:43,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:43,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:36:43,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:36:43,403 INFO L87 Difference]: Start difference. First operand 3270 states and 4598 transitions. Second operand 8 states. [2020-10-12 11:36:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:54,147 INFO L93 Difference]: Finished difference Result 8490 states and 12646 transitions. [2020-10-12 11:36:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:36:54,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 909 [2020-10-12 11:36:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:54,183 INFO L225 Difference]: With dead ends: 8490 [2020-10-12 11:36:54,183 INFO L226 Difference]: Without dead ends: 5953 [2020-10-12 11:36:54,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:36:54,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2020-10-12 11:36:54,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 5900. [2020-10-12 11:36:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5900 states. [2020-10-12 11:36:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5900 states to 5900 states and 7862 transitions. [2020-10-12 11:36:54,354 INFO L78 Accepts]: Start accepts. Automaton has 5900 states and 7862 transitions. Word has length 909 [2020-10-12 11:36:54,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:54,355 INFO L479 AbstractCegarLoop]: Abstraction has 5900 states and 7862 transitions. [2020-10-12 11:36:54,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:36:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5900 states and 7862 transitions. [2020-10-12 11:36:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2020-10-12 11:36:54,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:54,381 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2020-10-12 11:36:54,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:36:54,382 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:54,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:54,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1026454038, now seen corresponding path program 1 times [2020-10-12 11:36:54,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:54,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597366081] [2020-10-12 11:36:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:54,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:56,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:59,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:59,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-12 11:36:59,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:36:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 11:36:59,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:36:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:36:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:36:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:59,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:59,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:59,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:59,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:36:59,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:36:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:59,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:59,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:59,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:36:59,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:36:59,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:59,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:59,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:59,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:36:59,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:59,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:36:59,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:59,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:36:59,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:59,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 11:36:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:59,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:59,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:36:59,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:59,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:36:59,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:59,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:59,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 11:36:59,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 11:36:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:59,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:59,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:59,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:36:59,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:59,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:36:59,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 11:36:59,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 139 proven. 93 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-12 11:37:00,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597366081] [2020-10-12 11:37:00,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:00,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:37:00,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927946287] [2020-10-12 11:37:00,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:37:00,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:00,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:37:00,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:37:00,786 INFO L87 Difference]: Start difference. First operand 5900 states and 7862 transitions. Second operand 8 states. [2020-10-12 11:37:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:12,090 INFO L93 Difference]: Finished difference Result 16536 states and 23572 transitions. [2020-10-12 11:37:12,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:37:12,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 959 [2020-10-12 11:37:12,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:12,147 INFO L225 Difference]: With dead ends: 16536 [2020-10-12 11:37:12,147 INFO L226 Difference]: Without dead ends: 11369 [2020-10-12 11:37:12,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:37:12,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11369 states. [2020-10-12 11:37:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11369 to 11162. [2020-10-12 11:37:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11162 states. [2020-10-12 11:37:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11162 states to 11162 states and 14189 transitions. [2020-10-12 11:37:12,523 INFO L78 Accepts]: Start accepts. Automaton has 11162 states and 14189 transitions. Word has length 959 [2020-10-12 11:37:12,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:12,524 INFO L479 AbstractCegarLoop]: Abstraction has 11162 states and 14189 transitions. [2020-10-12 11:37:12,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:37:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 11162 states and 14189 transitions. [2020-10-12 11:37:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-12 11:37:12,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:12,575 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2020-10-12 11:37:12,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:37:12,576 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:12,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1749275833, now seen corresponding path program 1 times [2020-10-12 11:37:12,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:12,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371096791] [2020-10-12 11:37:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:17,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:17,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 991 [2020-10-12 11:37:17,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:37:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-12 11:37:17,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:37:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:37:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 11:37:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:17,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:17,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:17,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:17,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:37:17,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:17,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:37:17,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:17,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:17,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:17,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:18,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:18,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:18,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:37:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 11:37:18,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:37:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:18,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:18,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:18,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:18,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:37:18,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:18,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:37:18,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 11:37:18,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:37:18,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 11:37:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:18,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:18,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:18,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:37:18,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 11:37:18,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:18,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 11:37:18,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:18,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:37:18,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 11:37:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:18,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:18,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:18,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:37:18,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:37:18,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 11:37:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:18,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 11:37:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:18,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:37:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:37:18,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 11:37:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 149 proven. 49 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-12 11:37:18,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371096791] [2020-10-12 11:37:18,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:18,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:37:18,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130089105] [2020-10-12 11:37:18,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:37:18,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:18,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:37:18,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:37:18,814 INFO L87 Difference]: Start difference. First operand 11162 states and 14189 transitions. Second operand 8 states. [2020-10-12 11:37:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:29,197 INFO L93 Difference]: Finished difference Result 26960 states and 34342 transitions. [2020-10-12 11:37:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 11:37:29,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 967 [2020-10-12 11:37:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:29,245 INFO L225 Difference]: With dead ends: 26960 [2020-10-12 11:37:29,245 INFO L226 Difference]: Without dead ends: 16531 [2020-10-12 11:37:29,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:37:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16531 states. [2020-10-12 11:37:29,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16531 to 16332. [2020-10-12 11:37:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16332 states. [2020-10-12 11:37:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16332 states to 16332 states and 20293 transitions. [2020-10-12 11:37:29,582 INFO L78 Accepts]: Start accepts. Automaton has 16332 states and 20293 transitions. Word has length 967 [2020-10-12 11:37:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:29,583 INFO L479 AbstractCegarLoop]: Abstraction has 16332 states and 20293 transitions. [2020-10-12 11:37:29,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:37:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 16332 states and 20293 transitions. [2020-10-12 11:37:29,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-12 11:37:29,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:29,636 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2020-10-12 11:37:29,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:37:29,637 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:29,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:29,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1795559699, now seen corresponding path program 1 times [2020-10-12 11:37:29,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:29,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537286417] [2020-10-12 11:37:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:30,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:34,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:34,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-12 11:37:34,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:37:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-12 11:37:34,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:37:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:37:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 11:37:34,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:34,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:34,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:34,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:34,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:37:34,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:37:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:34,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:35,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:35,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:37:35,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:37:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 11:37:35,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 11:37:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:35,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 11:37:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:35,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:35,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:37:35,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:35,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:37:35,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:35,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 11:37:35,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 11:37:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:35,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:35,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:37:35,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:35,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:37:35,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 11:37:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:35,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:35,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 11:37:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:35,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:37:35,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:37:35,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 11:37:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 11:37:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:35,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:35,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:37:35,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:37:35,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 11:37:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 155 proven. 63 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-12 11:37:35,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537286417] [2020-10-12 11:37:35,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:35,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:37:35,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433583296] [2020-10-12 11:37:35,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:37:35,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:35,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:37:35,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:37:35,623 INFO L87 Difference]: Start difference. First operand 16332 states and 20293 transitions. Second operand 7 states. [2020-10-12 11:37:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:46,838 INFO L93 Difference]: Finished difference Result 45059 states and 58081 transitions. [2020-10-12 11:37:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:37:46,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 974 [2020-10-12 11:37:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:46,936 INFO L225 Difference]: With dead ends: 45059 [2020-10-12 11:37:46,936 INFO L226 Difference]: Without dead ends: 29460 [2020-10-12 11:37:46,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 2 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 11:37:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29460 states. [2020-10-12 11:37:47,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29460 to 28508. [2020-10-12 11:37:47,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28508 states. [2020-10-12 11:37:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28508 states to 28508 states and 34876 transitions. [2020-10-12 11:37:47,596 INFO L78 Accepts]: Start accepts. Automaton has 28508 states and 34876 transitions. Word has length 974 [2020-10-12 11:37:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:47,597 INFO L479 AbstractCegarLoop]: Abstraction has 28508 states and 34876 transitions. [2020-10-12 11:37:47,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:37:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand 28508 states and 34876 transitions. [2020-10-12 11:37:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2020-10-12 11:37:47,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:47,682 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:37:47,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:37:47,683 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:47,684 INFO L82 PathProgramCache]: Analyzing trace with hash -211788601, now seen corresponding path program 1 times [2020-10-12 11:37:47,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:47,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60336732] [2020-10-12 11:37:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:48,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:52,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:52,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1037 [2020-10-12 11:37:52,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:37:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-12 11:37:52,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:37:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-12 11:37:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 822 [2020-10-12 11:37:52,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:53,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:53,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:53,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:53,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:53,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:37:53,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:53,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:53,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:53,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:53,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:53,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:53,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:37:53,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:53,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:53,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:53,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:53,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:53,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:53,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 11:37:53,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:53,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:37:53,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:53,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:53,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:53,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:53,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 11:37:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:53,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:53,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 11:37:53,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 11:37:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:53,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 11:37:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 194 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 11:37:54,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60336732] [2020-10-12 11:37:54,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:54,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:37:54,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330088898] [2020-10-12 11:37:54,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:37:54,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:54,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:37:54,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:37:54,283 INFO L87 Difference]: Start difference. First operand 28508 states and 34876 transitions. Second operand 6 states. [2020-10-12 11:38:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:38:07,231 INFO L93 Difference]: Finished difference Result 66356 states and 83167 transitions. [2020-10-12 11:38:07,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:38:07,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1017 [2020-10-12 11:38:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:38:07,348 INFO L225 Difference]: With dead ends: 66356 [2020-10-12 11:38:07,349 INFO L226 Difference]: Without dead ends: 38581 [2020-10-12 11:38:07,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:38:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38581 states. [2020-10-12 11:38:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38581 to 38566. [2020-10-12 11:38:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38566 states. [2020-10-12 11:38:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38566 states to 38566 states and 46756 transitions. [2020-10-12 11:38:08,104 INFO L78 Accepts]: Start accepts. Automaton has 38566 states and 46756 transitions. Word has length 1017 [2020-10-12 11:38:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:38:08,105 INFO L479 AbstractCegarLoop]: Abstraction has 38566 states and 46756 transitions. [2020-10-12 11:38:08,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:38:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 38566 states and 46756 transitions. [2020-10-12 11:38:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2020-10-12 11:38:08,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:38:08,171 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:38:08,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:38:08,172 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:38:08,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:38:08,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1905030485, now seen corresponding path program 1 times [2020-10-12 11:38:08,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:38:08,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034729253] [2020-10-12 11:38:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:38:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:08,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:13,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:13,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1047 [2020-10-12 11:38:13,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:38:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-12 11:38:13,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:38:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-12 11:38:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 11:38:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:13,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:38:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:13,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:13,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:38:13,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:38:13,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:13,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:38:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:13,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:13,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:13,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:38:13,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:38:13,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:38:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:13,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:13,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:38:13,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:38:13,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:13,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 11:38:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:13,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:13,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:38:13,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:13,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 11:38:13,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 11:38:13,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:13,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 11:38:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:13,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:13,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:13,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 11:38:13,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:38:13,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 11:38:13,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:38:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:38:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 11:38:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:13,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 11:38:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:13,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:13,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:13,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:38:13,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 11:38:13,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:38:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:38:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:38:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 412 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-12 11:38:14,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034729253] [2020-10-12 11:38:14,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:38:14,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:38:14,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002495320] [2020-10-12 11:38:14,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:38:14,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:38:14,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:38:14,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:38:14,611 INFO L87 Difference]: Start difference. First operand 38566 states and 46756 transitions. Second operand 9 states. [2020-10-12 11:38:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:38:28,725 INFO L93 Difference]: Finished difference Result 76534 states and 93077 transitions. [2020-10-12 11:38:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:38:28,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1023 [2020-10-12 11:38:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:38:28,828 INFO L225 Difference]: With dead ends: 76534 [2020-10-12 11:38:28,828 INFO L226 Difference]: Without dead ends: 37015 [2020-10-12 11:38:28,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:38:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37015 states. [2020-10-12 11:38:29,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37015 to 36085. [2020-10-12 11:38:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36085 states. [2020-10-12 11:38:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36085 states to 36085 states and 40912 transitions. [2020-10-12 11:38:29,483 INFO L78 Accepts]: Start accepts. Automaton has 36085 states and 40912 transitions. Word has length 1023 [2020-10-12 11:38:29,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:38:29,484 INFO L479 AbstractCegarLoop]: Abstraction has 36085 states and 40912 transitions. [2020-10-12 11:38:29,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:38:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 36085 states and 40912 transitions. [2020-10-12 11:38:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2020-10-12 11:38:29,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:38:29,526 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:38:29,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:38:29,527 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:38:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:38:29,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1871658530, now seen corresponding path program 1 times [2020-10-12 11:38:29,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:38:29,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138340120] [2020-10-12 11:38:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:38:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:29,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:34,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:34,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1138 [2020-10-12 11:38:34,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:38:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 11:38:34,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:38:34,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 11:38:34,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 11:38:34,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:38:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:34,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:38:34,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:34,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:38:34,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:38:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:34,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:34,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:38:34,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:34,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:38:34,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:38:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:38:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:38:34,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:38:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:34,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:35,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:35,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 11:38:35,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:38:35,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 11:38:35,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:38:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:38:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:38:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:35,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 11:38:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:35,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:35,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 11:38:35,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:35,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 11:38:35,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:38:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:38:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 11:38:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:35,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 11:38:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:35,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:38:35,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 11:38:35,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:38:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 11:38:35,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:38:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:38:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-12 11:38:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:38:35,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:38:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 327 proven. 102 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 11:38:36,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138340120] [2020-10-12 11:38:36,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:38:36,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:38:36,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178849893] [2020-10-12 11:38:36,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:38:36,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:38:36,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:38:36,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:38:36,051 INFO L87 Difference]: Start difference. First operand 36085 states and 40912 transitions. Second operand 7 states. [2020-10-12 11:38:52,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:38:52,303 INFO L93 Difference]: Finished difference Result 89917 states and 104366 transitions. [2020-10-12 11:38:52,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:38:52,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1116 [2020-10-12 11:38:52,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:38:52,462 INFO L225 Difference]: With dead ends: 89917 [2020-10-12 11:38:52,462 INFO L226 Difference]: Without dead ends: 54565 [2020-10-12 11:38:52,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:38:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54565 states. [2020-10-12 11:38:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54565 to 52471. [2020-10-12 11:38:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52471 states. [2020-10-12 11:38:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52471 states to 52471 states and 58843 transitions. [2020-10-12 11:38:53,469 INFO L78 Accepts]: Start accepts. Automaton has 52471 states and 58843 transitions. Word has length 1116 [2020-10-12 11:38:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:38:53,469 INFO L479 AbstractCegarLoop]: Abstraction has 52471 states and 58843 transitions. [2020-10-12 11:38:53,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:38:53,470 INFO L276 IsEmpty]: Start isEmpty. Operand 52471 states and 58843 transitions. [2020-10-12 11:38:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1301 [2020-10-12 11:38:53,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:38:53,545 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:38:53,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:38:53,546 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:38:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:38:53,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1561590527, now seen corresponding path program 1 times [2020-10-12 11:38:53,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:38:53,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798596214] [2020-10-12 11:38:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:38:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:38:53,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:38:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking...