/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:46:24,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:46:24,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:46:24,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:46:24,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:46:24,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:46:24,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:46:24,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:46:24,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:46:24,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:46:24,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:46:24,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:46:24,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:46:24,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:46:24,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:46:24,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:46:24,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:46:24,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:46:24,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:46:24,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:46:24,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:46:24,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:46:24,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:46:24,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:46:24,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:46:24,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:46:24,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:46:24,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:46:24,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:46:24,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:46:24,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:46:24,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:46:24,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:46:24,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:46:24,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:46:24,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:46:24,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:46:24,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:46:24,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:46:24,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:46:24,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:46:24,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:46:24,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:46:24,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:46:24,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:46:24,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:46:24,187 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:46:24,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:46:24,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:46:24,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:46:24,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:46:24,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:46:24,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:46:24,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:46:24,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:46:24,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:46:24,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:46:24,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:46:24,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:46:24,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:46:24,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:46:24,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:46:24,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:46:24,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:46:24,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:46:24,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:46:24,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:46:24,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:46:24,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:46:24,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:46:24,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:46:24,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:46:24,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:46:24,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:46:24,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:46:24,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:46:24,568 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:46:24,569 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label16.c [2020-10-13 09:46:24,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60f53c4f9/122c305c8f7844baab84d3932a7de5cf/FLAG4e449de82 [2020-10-13 09:46:25,428 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:46:25,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label16.c [2020-10-13 09:46:25,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60f53c4f9/122c305c8f7844baab84d3932a7de5cf/FLAG4e449de82 [2020-10-13 09:46:25,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60f53c4f9/122c305c8f7844baab84d3932a7de5cf [2020-10-13 09:46:25,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:46:25,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:46:25,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:46:25,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:46:25,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:46:25,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:46:25" (1/1) ... [2020-10-13 09:46:25,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df3c5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:25, skipping insertion in model container [2020-10-13 09:46:25,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:46:25" (1/1) ... [2020-10-13 09:46:25,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:46:25,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:46:27,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:46:27,039 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:46:27,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:46:27,655 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:46:27,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27 WrapperNode [2020-10-13 09:46:27,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:46:27,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:46:27,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:46:27,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:46:27,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27" (1/1) ... [2020-10-13 09:46:27,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27" (1/1) ... [2020-10-13 09:46:27,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27" (1/1) ... [2020-10-13 09:46:27,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27" (1/1) ... [2020-10-13 09:46:27,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27" (1/1) ... [2020-10-13 09:46:27,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27" (1/1) ... [2020-10-13 09:46:28,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27" (1/1) ... [2020-10-13 09:46:28,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:46:28,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:46:28,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:46:28,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:46:28,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:46:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:46:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:46:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:46:28,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:46:28,142 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:46:28,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:46:28,142 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:46:28,142 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:46:28,142 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:46:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:46:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:46:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:46:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:46:28,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:46:28,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:46:33,962 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:46:33,962 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:46:33,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:46:33 BoogieIcfgContainer [2020-10-13 09:46:33,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:46:33,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:46:33,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:46:33,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:46:33,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:46:25" (1/3) ... [2020-10-13 09:46:33,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52bb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:46:33, skipping insertion in model container [2020-10-13 09:46:33,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:46:27" (2/3) ... [2020-10-13 09:46:33,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52bb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:46:33, skipping insertion in model container [2020-10-13 09:46:33,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:46:33" (3/3) ... [2020-10-13 09:46:33,984 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label16.c [2020-10-13 09:46:33,997 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:46:34,006 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:46:34,022 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:46:34,052 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:46:34,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:46:34,052 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:46:34,053 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:46:34,053 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:46:34,053 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:46:34,053 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:46:34,053 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:46:34,091 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:46:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 09:46:34,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:34,102 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] [2020-10-13 09:46:34,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:34,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1134727921, now seen corresponding path program 1 times [2020-10-13 09:46:34,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:34,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748813958] [2020-10-13 09:46:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:34,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:34,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:34,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 09:46:34,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-13 09:46:34,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:46:34,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:46:34,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 09:46:34,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:46:34,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:34,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:34,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:34,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:34,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:46:34,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:34,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:46:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:34,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748813958] [2020-10-13 09:46:34,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:46:34,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:46:35,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53696681] [2020-10-13 09:46:35,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:35,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:35,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:35,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:35,108 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-13 09:46:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:47,800 INFO L93 Difference]: Finished difference Result 3016 states and 5791 transitions. [2020-10-13 09:46:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:46:47,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-13 09:46:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:47,835 INFO L225 Difference]: With dead ends: 3016 [2020-10-13 09:46:47,836 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 09:46:47,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:46:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 09:46:48,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2130. [2020-10-13 09:46:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2130 states. [2020-10-13 09:46:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 3174 transitions. [2020-10-13 09:46:48,029 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 3174 transitions. Word has length 52 [2020-10-13 09:46:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:48,030 INFO L479 AbstractCegarLoop]: Abstraction has 2130 states and 3174 transitions. [2020-10-13 09:46:48,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 3174 transitions. [2020-10-13 09:46:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 09:46:48,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:48,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:48,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:46:48,039 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:48,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2109224339, now seen corresponding path program 1 times [2020-10-13 09:46:48,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:48,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268468895] [2020-10-13 09:46:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:48,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:48,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:46:48,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-10-13 09:46:48,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:46:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:46:48,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:49,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:49,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:49,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:49,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:49,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:46:49,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:49,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:49,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:49,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:46:49,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:46:49,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:46:49,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 09:46:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:49,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268468895] [2020-10-13 09:46:49,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:49,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:49,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784307440] [2020-10-13 09:46:49,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:49,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:49,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:49,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:49,235 INFO L87 Difference]: Start difference. First operand 2130 states and 3174 transitions. Second operand 5 states. [2020-10-13 09:47:00,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:00,315 INFO L93 Difference]: Finished difference Result 6404 states and 9604 transitions. [2020-10-13 09:47:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:00,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 09:47:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:00,341 INFO L225 Difference]: With dead ends: 6404 [2020-10-13 09:47:00,342 INFO L226 Difference]: Without dead ends: 4280 [2020-10-13 09:47:00,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2020-10-13 09:47:00,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4276. [2020-10-13 09:47:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4276 states. [2020-10-13 09:47:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 5799 transitions. [2020-10-13 09:47:00,489 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 5799 transitions. Word has length 121 [2020-10-13 09:47:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:00,493 INFO L479 AbstractCegarLoop]: Abstraction has 4276 states and 5799 transitions. [2020-10-13 09:47:00,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:00,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 5799 transitions. [2020-10-13 09:47:00,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 09:47:00,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:00,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:00,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:47:00,505 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:00,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:00,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1821965093, now seen corresponding path program 1 times [2020-10-13 09:47:00,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:00,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131109618] [2020-10-13 09:47:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:01,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:01,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 09:47:01,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:47:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-13 09:47:01,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 09:47:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:47:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:01,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:01,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:47:01,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:01,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:01,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:01,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:47:01,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:47:01,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:01,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:01,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:01,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:47:01,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:47:01,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131109618] [2020-10-13 09:47:01,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:01,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:47:01,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315731311] [2020-10-13 09:47:01,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:01,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:01,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:01,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:01,401 INFO L87 Difference]: Start difference. First operand 4276 states and 5799 transitions. Second operand 5 states. [2020-10-13 09:47:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:12,297 INFO L93 Difference]: Finished difference Result 12804 states and 17575 transitions. [2020-10-13 09:47:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:12,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 09:47:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:12,345 INFO L225 Difference]: With dead ends: 12804 [2020-10-13 09:47:12,346 INFO L226 Difference]: Without dead ends: 8534 [2020-10-13 09:47:12,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2020-10-13 09:47:12,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 7820. [2020-10-13 09:47:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7820 states. [2020-10-13 09:47:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7820 states to 7820 states and 9976 transitions. [2020-10-13 09:47:12,593 INFO L78 Accepts]: Start accepts. Automaton has 7820 states and 9976 transitions. Word has length 125 [2020-10-13 09:47:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:12,595 INFO L479 AbstractCegarLoop]: Abstraction has 7820 states and 9976 transitions. [2020-10-13 09:47:12,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:12,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7820 states and 9976 transitions. [2020-10-13 09:47:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 09:47:12,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:12,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:12,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:47:12,601 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:12,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:12,601 INFO L82 PathProgramCache]: Analyzing trace with hash 755198428, now seen corresponding path program 1 times [2020-10-13 09:47:12,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:12,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589798772] [2020-10-13 09:47:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:12,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:13,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:13,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:47:13,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:13,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-13 09:47:13,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:47:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:47:13,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:14,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:14,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:14,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:14,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:14,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:47:14,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:14,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:14,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:14,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:47:14,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:14,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 09:47:14,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:47:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:47:14,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589798772] [2020-10-13 09:47:14,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:14,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:47:14,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114369583] [2020-10-13 09:47:14,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:14,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:14,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:14,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:14,420 INFO L87 Difference]: Start difference. First operand 7820 states and 9976 transitions. Second operand 5 states. [2020-10-13 09:47:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:20,650 INFO L93 Difference]: Finished difference Result 13546 states and 17459 transitions. [2020-10-13 09:47:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:20,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 09:47:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:20,683 INFO L225 Difference]: With dead ends: 13546 [2020-10-13 09:47:20,684 INFO L226 Difference]: Without dead ends: 7832 [2020-10-13 09:47:20,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2020-10-13 09:47:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 7820. [2020-10-13 09:47:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7820 states. [2020-10-13 09:47:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7820 states to 7820 states and 9973 transitions. [2020-10-13 09:47:20,887 INFO L78 Accepts]: Start accepts. Automaton has 7820 states and 9973 transitions. Word has length 146 [2020-10-13 09:47:20,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:20,888 INFO L479 AbstractCegarLoop]: Abstraction has 7820 states and 9973 transitions. [2020-10-13 09:47:20,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 7820 states and 9973 transitions. [2020-10-13 09:47:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 09:47:20,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:20,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:20,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:47:20,893 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:20,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:20,893 INFO L82 PathProgramCache]: Analyzing trace with hash 433990136, now seen corresponding path program 1 times [2020-10-13 09:47:20,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:20,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014367036] [2020-10-13 09:47:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:21,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:21,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 09:47:21,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:47:21,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-13 09:47:21,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 09:47:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:47:21,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:21,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:21,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:47:21,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:21,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:21,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:21,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:21,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:47:21,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:21,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:47:21,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:21,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:21,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:21,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:47:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:47:21,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014367036] [2020-10-13 09:47:21,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:21,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:47:21,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945050614] [2020-10-13 09:47:21,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:21,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:21,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:21,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:21,702 INFO L87 Difference]: Start difference. First operand 7820 states and 9973 transitions. Second operand 5 states. [2020-10-13 09:47:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:31,016 INFO L93 Difference]: Finished difference Result 19184 states and 25185 transitions. [2020-10-13 09:47:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:31,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 09:47:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:31,066 INFO L225 Difference]: With dead ends: 19184 [2020-10-13 09:47:31,066 INFO L226 Difference]: Without dead ends: 11370 [2020-10-13 09:47:31,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11370 states. [2020-10-13 09:47:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11370 to 11366. [2020-10-13 09:47:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11366 states. [2020-10-13 09:47:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11366 states to 11366 states and 14431 transitions. [2020-10-13 09:47:31,446 INFO L78 Accepts]: Start accepts. Automaton has 11366 states and 14431 transitions. Word has length 148 [2020-10-13 09:47:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:31,447 INFO L479 AbstractCegarLoop]: Abstraction has 11366 states and 14431 transitions. [2020-10-13 09:47:31,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 11366 states and 14431 transitions. [2020-10-13 09:47:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 09:47:31,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:31,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:47:31,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:47:31,452 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:31,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1921771668, now seen corresponding path program 1 times [2020-10-13 09:47:31,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:31,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255476065] [2020-10-13 09:47:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:31,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:32,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:34,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:34,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-13 09:47:34,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3154 [2020-10-13 09:47:34,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 09:47:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:47:34,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:34,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:34,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:34,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:34,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:47:34,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:34,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:34,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:34,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:47:34,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:47:34,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:34,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:34,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:47:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:34,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:34,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:47:34,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:34,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:47:34,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:47:34,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:47:34,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255476065] [2020-10-13 09:47:34,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:34,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:47:34,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179506668] [2020-10-13 09:47:34,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:34,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:34,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:34,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:34,964 INFO L87 Difference]: Start difference. First operand 11366 states and 14431 transitions. Second operand 5 states. [2020-10-13 09:47:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:46,688 INFO L93 Difference]: Finished difference Result 28398 states and 36970 transitions. [2020-10-13 09:47:46,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:46,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-13 09:47:46,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:46,741 INFO L225 Difference]: With dead ends: 28398 [2020-10-13 09:47:46,741 INFO L226 Difference]: Without dead ends: 17038 [2020-10-13 09:47:46,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17038 states. [2020-10-13 09:47:47,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17038 to 17034. [2020-10-13 09:47:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17034 states. [2020-10-13 09:47:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17034 states to 17034 states and 20733 transitions. [2020-10-13 09:47:47,113 INFO L78 Accepts]: Start accepts. Automaton has 17034 states and 20733 transitions. Word has length 201 [2020-10-13 09:47:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:47,114 INFO L479 AbstractCegarLoop]: Abstraction has 17034 states and 20733 transitions. [2020-10-13 09:47:47,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 17034 states and 20733 transitions. [2020-10-13 09:47:47,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-13 09:47:47,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:47,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:47,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:47:47,120 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:47,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:47,120 INFO L82 PathProgramCache]: Analyzing trace with hash 260701444, now seen corresponding path program 1 times [2020-10-13 09:47:47,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:47,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063539790] [2020-10-13 09:47:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:50,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:50,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-13 09:47:50,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:47:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3773 [2020-10-13 09:47:50,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:50,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-13 09:47:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:47:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:51,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:51,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:51,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:51,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:47:51,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:51,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:51,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:51,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:51,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:51,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:47:51,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:47:51,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:51,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:47:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:51,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:51,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:47:51,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:51,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:47:51,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:51,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:51,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:51,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:47:51,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:47:51,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063539790] [2020-10-13 09:47:51,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:51,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:47:51,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694356911] [2020-10-13 09:47:51,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:47:51,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:47:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:47:51,390 INFO L87 Difference]: Start difference. First operand 17034 states and 20733 transitions. Second operand 5 states. [2020-10-13 09:47:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:57,346 INFO L93 Difference]: Finished difference Result 30538 states and 37312 transitions. [2020-10-13 09:47:57,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:47:57,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-13 09:47:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:57,417 INFO L225 Difference]: With dead ends: 30538 [2020-10-13 09:47:57,417 INFO L226 Difference]: Without dead ends: 17038 [2020-10-13 09:47:57,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:47:57,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17038 states. [2020-10-13 09:47:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17038 to 17034. [2020-10-13 09:47:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17034 states. [2020-10-13 09:47:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17034 states to 17034 states and 20729 transitions. [2020-10-13 09:47:57,770 INFO L78 Accepts]: Start accepts. Automaton has 17034 states and 20729 transitions. Word has length 209 [2020-10-13 09:47:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:57,770 INFO L479 AbstractCegarLoop]: Abstraction has 17034 states and 20729 transitions. [2020-10-13 09:47:57,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:47:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17034 states and 20729 transitions. [2020-10-13 09:47:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 09:47:57,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:57,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:47:57,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:47:57,776 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:57,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:57,777 INFO L82 PathProgramCache]: Analyzing trace with hash 465421341, now seen corresponding path program 1 times [2020-10-13 09:47:57,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:57,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806373088] [2020-10-13 09:47:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:59,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:01,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:01,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 09:48:01,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:48:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4025 [2020-10-13 09:48:01,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:48:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:48:01,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:01,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:01,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:01,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:01,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:48:01,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:01,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:01,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:02,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:02,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:48:02,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:48:02,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:02,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:48:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:02,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:02,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:48:02,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:48:02,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:48:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:48:02,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806373088] [2020-10-13 09:48:02,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:02,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:02,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872928773] [2020-10-13 09:48:02,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:02,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:02,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:02,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:02,224 INFO L87 Difference]: Start difference. First operand 17034 states and 20729 transitions. Second operand 5 states. [2020-10-13 09:48:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:09,121 INFO L93 Difference]: Finished difference Result 30539 states and 37305 transitions. [2020-10-13 09:48:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:09,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-13 09:48:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:09,178 INFO L225 Difference]: With dead ends: 30539 [2020-10-13 09:48:09,178 INFO L226 Difference]: Without dead ends: 17038 [2020-10-13 09:48:09,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17038 states. [2020-10-13 09:48:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17038 to 17034. [2020-10-13 09:48:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17034 states. [2020-10-13 09:48:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17034 states to 17034 states and 20725 transitions. [2020-10-13 09:48:09,596 INFO L78 Accepts]: Start accepts. Automaton has 17034 states and 20725 transitions. Word has length 216 [2020-10-13 09:48:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:09,596 INFO L479 AbstractCegarLoop]: Abstraction has 17034 states and 20725 transitions. [2020-10-13 09:48:09,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 17034 states and 20725 transitions. [2020-10-13 09:48:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-13 09:48:09,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:09,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:48:09,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:48:09,612 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1829875560, now seen corresponding path program 1 times [2020-10-13 09:48:09,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:09,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436564159] [2020-10-13 09:48:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:12,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:12,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-13 09:48:12,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:48:12,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2805 [2020-10-13 09:48:12,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:12,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-13 09:48:12,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:48:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:12,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:12,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:12,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:12,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:12,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:12,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:12,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:48:12,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:48:12,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:12,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:12,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:48:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:12,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:12,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:12,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:48:12,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 09:48:12,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:48:12,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:48:13,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436564159] [2020-10-13 09:48:13,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:13,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:13,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369907037] [2020-10-13 09:48:13,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:13,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:13,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:13,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:13,153 INFO L87 Difference]: Start difference. First operand 17034 states and 20725 transitions. Second operand 5 states. [2020-10-13 09:48:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:22,696 INFO L93 Difference]: Finished difference Result 30542 states and 37300 transitions. [2020-10-13 09:48:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:22,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-10-13 09:48:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:22,732 INFO L225 Difference]: With dead ends: 30542 [2020-10-13 09:48:22,733 INFO L226 Difference]: Without dead ends: 17038 [2020-10-13 09:48:22,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17038 states. [2020-10-13 09:48:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17038 to 17034. [2020-10-13 09:48:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17034 states. [2020-10-13 09:48:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17034 states to 17034 states and 20721 transitions. [2020-10-13 09:48:23,003 INFO L78 Accepts]: Start accepts. Automaton has 17034 states and 20721 transitions. Word has length 271 [2020-10-13 09:48:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:23,003 INFO L479 AbstractCegarLoop]: Abstraction has 17034 states and 20721 transitions. [2020-10-13 09:48:23,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 17034 states and 20721 transitions. [2020-10-13 09:48:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-13 09:48:23,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:23,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:48:23,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:48:23,023 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash 360837881, now seen corresponding path program 1 times [2020-10-13 09:48:23,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:23,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542486262] [2020-10-13 09:48:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:23,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:23,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:25,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-13 09:48:25,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:48:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2672 [2020-10-13 09:48:25,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 242 [2020-10-13 09:48:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:48:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:25,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:25,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:25,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:25,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:48:25,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:25,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:25,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:48:25,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:25,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:48:25,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:25,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:48:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:25,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:26,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:26,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:48:26,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:48:26,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-13 09:48:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:48:26,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542486262] [2020-10-13 09:48:26,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:26,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:48:26,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273642573] [2020-10-13 09:48:26,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:48:26,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:26,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:48:26,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:48:26,252 INFO L87 Difference]: Start difference. First operand 17034 states and 20721 transitions. Second operand 5 states. [2020-10-13 09:48:33,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:33,253 INFO L93 Difference]: Finished difference Result 30543 states and 37293 transitions. [2020-10-13 09:48:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:48:33,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-13 09:48:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:33,301 INFO L225 Difference]: With dead ends: 30543 [2020-10-13 09:48:33,302 INFO L226 Difference]: Without dead ends: 17038 [2020-10-13 09:48:33,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17038 states. [2020-10-13 09:48:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17038 to 17034. [2020-10-13 09:48:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17034 states. [2020-10-13 09:48:33,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17034 states to 17034 states and 20717 transitions. [2020-10-13 09:48:33,596 INFO L78 Accepts]: Start accepts. Automaton has 17034 states and 20717 transitions. Word has length 282 [2020-10-13 09:48:33,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:33,597 INFO L479 AbstractCegarLoop]: Abstraction has 17034 states and 20717 transitions. [2020-10-13 09:48:33,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:48:33,597 INFO L276 IsEmpty]: Start isEmpty. Operand 17034 states and 20717 transitions. [2020-10-13 09:48:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-13 09:48:33,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:33,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:48:33,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:48:33,609 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:33,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1342276508, now seen corresponding path program 1 times [2020-10-13 09:48:33,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:33,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330144252] [2020-10-13 09:48:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:36,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:36,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-13 09:48:36,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:36,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2662 [2020-10-13 09:48:36,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-13 09:48:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:48:36,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:36,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:36,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:36,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:36,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:36,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:36,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:36,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:36,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:36,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:48:36,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:48:36,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:48:36,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:48:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:36,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:36,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:36,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 09:48:36,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:36,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 09:48:36,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-13 09:48:36,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:48:36,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330144252] [2020-10-13 09:48:36,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:36,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:48:36,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033972145] [2020-10-13 09:48:36,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:48:36,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:36,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:48:36,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:48:36,778 INFO L87 Difference]: Start difference. First operand 17034 states and 20717 transitions. Second operand 6 states. [2020-10-13 09:48:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:54,832 INFO L93 Difference]: Finished difference Result 51764 states and 65664 transitions. [2020-10-13 09:48:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:48:54,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 293 [2020-10-13 09:48:54,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:54,926 INFO L225 Difference]: With dead ends: 51764 [2020-10-13 09:48:54,926 INFO L226 Difference]: Without dead ends: 34736 [2020-10-13 09:48:54,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:48:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34736 states. [2020-10-13 09:48:55,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34736 to 34732. [2020-10-13 09:48:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34732 states. [2020-10-13 09:48:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34732 states to 34732 states and 42402 transitions. [2020-10-13 09:48:55,413 INFO L78 Accepts]: Start accepts. Automaton has 34732 states and 42402 transitions. Word has length 293 [2020-10-13 09:48:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:55,414 INFO L479 AbstractCegarLoop]: Abstraction has 34732 states and 42402 transitions. [2020-10-13 09:48:55,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:48:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 34732 states and 42402 transitions. [2020-10-13 09:48:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2020-10-13 09:48:55,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:55,473 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:48:55,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:48:55,474 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:55,474 INFO L82 PathProgramCache]: Analyzing trace with hash 917043845, now seen corresponding path program 1 times [2020-10-13 09:48:55,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:55,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308831133] [2020-10-13 09:48:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:56,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:00,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:00,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 635 [2020-10-13 09:49:00,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:49:00,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 09:49:00,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 580 [2020-10-13 09:49:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:49:00,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:00,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:00,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:00,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:49:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:00,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:00,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:49:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:49:00,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:00,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:49:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:00,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:01,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:01,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-13 09:49:01,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-13 09:49:01,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:01,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:01,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 494 [2020-10-13 09:49:01,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:01,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:01,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 09:49:01,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 09:49:01,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-13 09:49:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:49:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:49:02,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308831133] [2020-10-13 09:49:02,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:02,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:02,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844344403] [2020-10-13 09:49:02,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:02,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:02,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:02,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:02,005 INFO L87 Difference]: Start difference. First operand 34732 states and 42402 transitions. Second operand 5 states. [2020-10-13 09:49:09,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:09,164 INFO L93 Difference]: Finished difference Result 63116 states and 77497 transitions. [2020-10-13 09:49:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:09,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 621 [2020-10-13 09:49:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:09,269 INFO L225 Difference]: With dead ends: 63116 [2020-10-13 09:49:09,269 INFO L226 Difference]: Without dead ends: 34736 [2020-10-13 09:49:09,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:49:09,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34736 states. [2020-10-13 09:49:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34736 to 34732. [2020-10-13 09:49:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34732 states. [2020-10-13 09:49:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34732 states to 34732 states and 42390 transitions. [2020-10-13 09:49:11,188 INFO L78 Accepts]: Start accepts. Automaton has 34732 states and 42390 transitions. Word has length 621 [2020-10-13 09:49:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:11,189 INFO L479 AbstractCegarLoop]: Abstraction has 34732 states and 42390 transitions. [2020-10-13 09:49:11,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 34732 states and 42390 transitions. [2020-10-13 09:49:11,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-13 09:49:11,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:11,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:49:11,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:49:11,249 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:11,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:11,249 INFO L82 PathProgramCache]: Analyzing trace with hash -750102843, now seen corresponding path program 1 times [2020-10-13 09:49:11,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:11,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343204176] [2020-10-13 09:49:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:12,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:16,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:16,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 685 [2020-10-13 09:49:16,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:49:16,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:49:16,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 627 [2020-10-13 09:49:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:49:16,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:16,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:16,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:16,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:16,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:16,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:16,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:16,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:49:16,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:49:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:16,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:49:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:16,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:16,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:16,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:49:16,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 09:49:16,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 541 [2020-10-13 09:49:16,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:49:17,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-13 09:49:17,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-13 09:49:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:17,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:17,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 09:49:17,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:17,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 09:49:17,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:49:17,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:49:18,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343204176] [2020-10-13 09:49:18,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:18,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:49:18,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369189301] [2020-10-13 09:49:18,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:49:18,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:18,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:49:18,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:49:18,064 INFO L87 Difference]: Start difference. First operand 34732 states and 42390 transitions. Second operand 5 states. [2020-10-13 09:49:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:25,519 INFO L93 Difference]: Finished difference Result 63112 states and 77480 transitions. [2020-10-13 09:49:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:49:25,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 669 [2020-10-13 09:49:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:25,633 INFO L225 Difference]: With dead ends: 63112 [2020-10-13 09:49:25,634 INFO L226 Difference]: Without dead ends: 34736 [2020-10-13 09:49:25,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:49:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34736 states. [2020-10-13 09:49:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34736 to 34732. [2020-10-13 09:49:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34732 states. [2020-10-13 09:49:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34732 states to 34732 states and 42378 transitions. [2020-10-13 09:49:26,412 INFO L78 Accepts]: Start accepts. Automaton has 34732 states and 42378 transitions. Word has length 669 [2020-10-13 09:49:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:26,413 INFO L479 AbstractCegarLoop]: Abstraction has 34732 states and 42378 transitions. [2020-10-13 09:49:26,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:49:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 34732 states and 42378 transitions. [2020-10-13 09:49:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-13 09:49:26,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:26,476 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:49:26,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:49:26,477 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:26,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1719472821, now seen corresponding path program 1 times [2020-10-13 09:49:26,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:26,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531088733] [2020-10-13 09:49:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:27,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:30,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:30,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:31,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:31,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 693 [2020-10-13 09:49:31,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:49:31,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 09:49:31,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:49:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 635 [2020-10-13 09:49:31,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:49:31,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:31,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:31,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:31,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:31,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:31,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:31,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:31,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:31,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:49:31,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:49:31,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:31,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:49:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:32,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:32,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-13 09:49:32,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:32,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 09:49:32,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 549 [2020-10-13 09:49:32,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:32,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:32,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:49:32,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 09:49:32,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 264 [2020-10-13 09:49:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:32,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:32,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:49:32,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:32,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:49:32,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:32,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:32,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:32,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:49:32,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 09:49:33,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531088733] [2020-10-13 09:49:33,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:33,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:49:33,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840201859] [2020-10-13 09:49:33,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:49:33,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:33,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:49:33,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:49:33,146 INFO L87 Difference]: Start difference. First operand 34732 states and 42378 transitions. Second operand 8 states. [2020-10-13 09:49:40,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:40,184 INFO L93 Difference]: Finished difference Result 63132 states and 77446 transitions. [2020-10-13 09:49:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:49:40,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 677 [2020-10-13 09:49:40,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:40,263 INFO L225 Difference]: With dead ends: 63132 [2020-10-13 09:49:40,263 INFO L226 Difference]: Without dead ends: 34736 [2020-10-13 09:49:40,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:49:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34736 states. [2020-10-13 09:49:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34736 to 34732. [2020-10-13 09:49:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34732 states. [2020-10-13 09:49:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34732 states to 34732 states and 42336 transitions. [2020-10-13 09:49:40,749 INFO L78 Accepts]: Start accepts. Automaton has 34732 states and 42336 transitions. Word has length 677 [2020-10-13 09:49:40,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:40,750 INFO L479 AbstractCegarLoop]: Abstraction has 34732 states and 42336 transitions. [2020-10-13 09:49:40,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:49:40,750 INFO L276 IsEmpty]: Start isEmpty. Operand 34732 states and 42336 transitions. [2020-10-13 09:49:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-13 09:49:40,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:40,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:49:40,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:49:40,794 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:40,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:40,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1045505844, now seen corresponding path program 1 times [2020-10-13 09:49:40,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:40,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464775551] [2020-10-13 09:49:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:40,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:45,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 842 [2020-10-13 09:49:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:49:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:49:45,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:49:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:49:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-13 09:49:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:46,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:46,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:46,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:46,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:49:46,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:49:46,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:46,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:46,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:46,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 09:49:46,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-13 09:49:46,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:49:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 09:49:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:46,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-13 09:49:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:46,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:47,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:47,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-13 09:49:47,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-13 09:49:47,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 596 [2020-10-13 09:49:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:47,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:47,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:47,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:47,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-13 09:49:47,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:49:47,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:47,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:47,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:49:47,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:49:47,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:47,751 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 90 proven. 175 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:49:47,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464775551] [2020-10-13 09:49:47,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:47,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:49:47,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242992094] [2020-10-13 09:49:47,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:49:47,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:47,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:49:47,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:49:47,753 INFO L87 Difference]: Start difference. First operand 34732 states and 42336 transitions. Second operand 8 states. [2020-10-13 09:50:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:50:03,129 INFO L93 Difference]: Finished difference Result 64697 states and 79472 transitions. [2020-10-13 09:50:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:50:03,132 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 826 [2020-10-13 09:50:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:50:03,200 INFO L225 Difference]: With dead ends: 64697 [2020-10-13 09:50:03,201 INFO L226 Difference]: Without dead ends: 29971 [2020-10-13 09:50:03,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:50:03,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29971 states. [2020-10-13 09:50:03,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29971 to 24305. [2020-10-13 09:50:03,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24305 states. [2020-10-13 09:50:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24305 states to 24305 states and 27829 transitions. [2020-10-13 09:50:03,583 INFO L78 Accepts]: Start accepts. Automaton has 24305 states and 27829 transitions. Word has length 826 [2020-10-13 09:50:03,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:50:03,584 INFO L479 AbstractCegarLoop]: Abstraction has 24305 states and 27829 transitions. [2020-10-13 09:50:03,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:50:03,584 INFO L276 IsEmpty]: Start isEmpty. Operand 24305 states and 27829 transitions. [2020-10-13 09:50:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2020-10-13 09:50:03,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:50:03,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:50:03,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:50:03,615 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:50:03,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:50:03,615 INFO L82 PathProgramCache]: Analyzing trace with hash 429226446, now seen corresponding path program 1 times [2020-10-13 09:50:03,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:50:03,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785228081] [2020-10-13 09:50:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:50:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:50:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:50:03,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking...