/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:52,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:52,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:52,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:52,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:52,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:52,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:52,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:52,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:52,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:52,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:52,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:52,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:52,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:52,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:52,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:52,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:52,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:52,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:52,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:52,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:52,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:52,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:52,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:52,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:52,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:52,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:52,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:52,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:52,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:52,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:52,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:52,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:52,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:52,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:52,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:52,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:52,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:52,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:52,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:52,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:52,126 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 [2020-09-25 07:55:52,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:52,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:52,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:52,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:52,163 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:52,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:52,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:52,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:52,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:52,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:52,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:52,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:52,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:52,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:52,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:52,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:52,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:52,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:52,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:52,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:52,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:52,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:52,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:52,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:52,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:52,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:52,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:52,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:52,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:52,176 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:55:52,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:52,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:52,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:52,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:52,683 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:52,684 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 07:55:52,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32457d6d6/81056e7416594776b604a03b64c0540d/FLAG1ae796476 [2020-09-25 07:55:53,413 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:53,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 07:55:53,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32457d6d6/81056e7416594776b604a03b64c0540d/FLAG1ae796476 [2020-09-25 07:55:53,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32457d6d6/81056e7416594776b604a03b64c0540d [2020-09-25 07:55:53,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:53,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:53,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:53,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:53,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:53,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:53" (1/1) ... [2020-09-25 07:55:53,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:53, skipping insertion in model container [2020-09-25 07:55:53,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:53" (1/1) ... [2020-09-25 07:55:53,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:53,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:54,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:54,240 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:54,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:54,511 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:54,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54 WrapperNode [2020-09-25 07:55:54,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:54,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:54,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:54,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:54,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54" (1/1) ... [2020-09-25 07:55:54,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54" (1/1) ... [2020-09-25 07:55:54,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54" (1/1) ... [2020-09-25 07:55:54,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54" (1/1) ... [2020-09-25 07:55:54,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54" (1/1) ... [2020-09-25 07:55:54,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54" (1/1) ... [2020-09-25 07:55:54,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54" (1/1) ... [2020-09-25 07:55:54,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:54,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:54,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:54,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:54,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54" (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 [2020-09-25 07:55:54,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:54,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:54,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:54,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:56,137 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:56,138 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:56,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:56 BoogieIcfgContainer [2020-09-25 07:55:56,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:56,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:56,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:56,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:56,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:53" (1/3) ... [2020-09-25 07:55:56,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:56, skipping insertion in model container [2020-09-25 07:55:56,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:54" (2/3) ... [2020-09-25 07:55:56,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:56, skipping insertion in model container [2020-09-25 07:55:56,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:56" (3/3) ... [2020-09-25 07:55:56,157 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-09-25 07:55:56,170 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:56,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:56,207 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:56,244 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:56,244 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:56,244 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:56,245 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:56,245 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:56,245 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:56,245 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:56,245 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:55:56,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 07:55:56,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:56,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:56,292 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:56,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:56,300 INFO L82 PathProgramCache]: Analyzing trace with hash -938747945, now seen corresponding path program 1 times [2020-09-25 07:55:56,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:56,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 07:55:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:57,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:57,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 07:55:57,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:55:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-09-25 07:55:57,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:57,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:55:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 07:55:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:55:57,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:57,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:57,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:57,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:55:57,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:57,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:55:57,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:57,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 07:55:57,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:57,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:55:57,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776499592] [2020-09-25 07:55:57,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:57,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:57,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:57,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:57,530 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 07:56:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:00,315 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 07:56:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:56:00,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-09-25 07:56:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:00,344 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 07:56:00,344 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 07:56:00,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 07:56:00,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 07:56:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 07:56:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 07:56:00,471 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 59 [2020-09-25 07:56:00,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:00,472 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 07:56:00,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 07:56:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 07:56:00,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:00,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:00,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:00,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:00,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:00,488 INFO L82 PathProgramCache]: Analyzing trace with hash -899949441, now seen corresponding path program 1 times [2020-09-25 07:56:00,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:00,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119344259] [2020-09-25 07:56:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:05,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 07:56:05,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:05,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:56:05,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:05,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 07:56:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:05,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:05,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:05,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:56:05,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:05,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:05,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:05,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:06,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:06,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 07:56:06,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 07:56:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:06,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 07:56:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:06,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119344259] [2020-09-25 07:56:06,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:06,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:06,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638702779] [2020-09-25 07:56:06,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:06,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:06,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:06,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:06,205 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 07:56:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:08,434 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 07:56:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:56:08,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-25 07:56:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:08,443 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 07:56:08,443 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 07:56:08,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:56:08,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 07:56:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 07:56:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 07:56:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 07:56:08,495 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 188 [2020-09-25 07:56:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:08,496 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 07:56:08,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:08,497 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 07:56:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 07:56:08,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:08,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:08,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:08,504 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:08,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:08,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1891490353, now seen corresponding path program 1 times [2020-09-25 07:56:08,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:08,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890921035] [2020-09-25 07:56:08,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 07:56:13,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:56:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 07:56:13,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:56:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 07:56:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:13,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:13,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:56:13,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:56:13,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:56:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:13,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 07:56:13,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 07:56:13,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 07:56:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:14,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890921035] [2020-09-25 07:56:14,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:14,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:14,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969356232] [2020-09-25 07:56:14,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:14,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:14,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:14,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:14,237 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 7 states. [2020-09-25 07:56:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:16,305 INFO L93 Difference]: Finished difference Result 1858 states and 2520 transitions. [2020-09-25 07:56:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:56:16,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 07:56:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:16,320 INFO L225 Difference]: With dead ends: 1858 [2020-09-25 07:56:16,321 INFO L226 Difference]: Without dead ends: 1021 [2020-09-25 07:56:16,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:56:16,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-09-25 07:56:16,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 855. [2020-09-25 07:56:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-09-25 07:56:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1095 transitions. [2020-09-25 07:56:16,387 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1095 transitions. Word has length 195 [2020-09-25 07:56:16,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:16,394 INFO L479 AbstractCegarLoop]: Abstraction has 855 states and 1095 transitions. [2020-09-25 07:56:16,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:16,394 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1095 transitions. [2020-09-25 07:56:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-25 07:56:16,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:16,405 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:16,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:16,406 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:16,407 INFO L82 PathProgramCache]: Analyzing trace with hash -779241874, now seen corresponding path program 1 times [2020-09-25 07:56:16,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:16,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093126228] [2020-09-25 07:56:16,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:21,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 07:56:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:56:21,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:21,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:56:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 07:56:21,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:21,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:21,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:21,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:21,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:56:21,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:21,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:21,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:21,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:21,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:21,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:21,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:21,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 07:56:21,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:21,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:21,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:21,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:56:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:21,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:56:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:21,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:22,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 07:56:22,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-25 07:56:22,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:22,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 07:56:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 94 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 07:56:22,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093126228] [2020-09-25 07:56:22,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:22,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:56:22,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852035665] [2020-09-25 07:56:22,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:56:22,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:22,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:56:22,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:56:22,739 INFO L87 Difference]: Start difference. First operand 855 states and 1095 transitions. Second operand 9 states. [2020-09-25 07:56:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:28,796 INFO L93 Difference]: Finished difference Result 2068 states and 2752 transitions. [2020-09-25 07:56:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:28,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 267 [2020-09-25 07:56:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:28,808 INFO L225 Difference]: With dead ends: 2068 [2020-09-25 07:56:28,808 INFO L226 Difference]: Without dead ends: 1354 [2020-09-25 07:56:28,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-09-25 07:56:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1166. [2020-09-25 07:56:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-09-25 07:56:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1466 transitions. [2020-09-25 07:56:28,852 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1466 transitions. Word has length 267 [2020-09-25 07:56:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:28,853 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1466 transitions. [2020-09-25 07:56:28,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:56:28,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1466 transitions. [2020-09-25 07:56:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-09-25 07:56:28,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:28,859 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:28,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:28,860 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:28,860 INFO L82 PathProgramCache]: Analyzing trace with hash 463482390, now seen corresponding path program 1 times [2020-09-25 07:56:28,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:28,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689539875] [2020-09-25 07:56:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:33,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-09-25 07:56:33,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:56:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:56:33,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:33,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:33,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:56:33,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 07:56:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:34,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:34,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:56:34,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:34,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:34,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:34,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:34,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 07:56:34,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:56:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:34,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 07:56:34,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:34,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 07:56:34,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 07:56:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:34,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689539875] [2020-09-25 07:56:34,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:34,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:56:34,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748480846] [2020-09-25 07:56:34,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:34,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:34,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:34,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:34,803 INFO L87 Difference]: Start difference. First operand 1166 states and 1466 transitions. Second operand 7 states. [2020-09-25 07:56:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:37,629 INFO L93 Difference]: Finished difference Result 2521 states and 3249 transitions. [2020-09-25 07:56:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:56:37,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-09-25 07:56:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:37,638 INFO L225 Difference]: With dead ends: 2521 [2020-09-25 07:56:37,638 INFO L226 Difference]: Without dead ends: 1180 [2020-09-25 07:56:37,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:56:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-09-25 07:56:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1134. [2020-09-25 07:56:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2020-09-25 07:56:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1402 transitions. [2020-09-25 07:56:37,685 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1402 transitions. Word has length 283 [2020-09-25 07:56:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:37,685 INFO L479 AbstractCegarLoop]: Abstraction has 1134 states and 1402 transitions. [2020-09-25 07:56:37,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1402 transitions. [2020-09-25 07:56:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-25 07:56:37,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:37,692 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:37,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:37,692 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:37,692 INFO L82 PathProgramCache]: Analyzing trace with hash -429680418, now seen corresponding path program 1 times [2020-09-25 07:56:37,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:37,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276360836] [2020-09-25 07:56:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking...