/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:10:01,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:10:02,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:10:02,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:10:02,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:10:02,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:10:02,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:10:02,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:10:02,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:10:02,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:10:02,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:10:02,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:10:02,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:10:02,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:10:02,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:10:02,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:10:02,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:10:02,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:10:02,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:10:02,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:10:02,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:10:02,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:10:02,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:10:02,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:10:02,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:10:02,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:10:02,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:10:02,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:10:02,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:10:02,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:10:02,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:10:02,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:10:02,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:10:02,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:10:02,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:10:02,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:10:02,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:10:02,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:10:02,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:10:02,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:10:02,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:10:02,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:10:02,154 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:10:02,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:10:02,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:10:02,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:10:02,157 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:10:02,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:10:02,157 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:10:02,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:10:02,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:10:02,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:10:02,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:10:02,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:10:02,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:10:02,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:10:02,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:10:02,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:10:02,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:10:02,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:10:02,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:10:02,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:10:02,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:10:02,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:10:02,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:10:02,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:10:02,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:10:02,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:10:02,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:10:02,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:10:02,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:10:02,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:10:02,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:10:02,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:10:02,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:10:02,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:10:02,468 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:10:02,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:10:02,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2788def68/d6557536a7a74943a218b334a1ade916/FLAG0541c9c21 [2020-10-12 19:10:03,001 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:10:03,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:10:03,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2788def68/d6557536a7a74943a218b334a1ade916/FLAG0541c9c21 [2020-10-12 19:10:03,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2788def68/d6557536a7a74943a218b334a1ade916 [2020-10-12 19:10:03,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:10:03,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:10:03,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:10:03,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:10:03,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:10:03,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:10:03" (1/1) ... [2020-10-12 19:10:03,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a3b6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:03, skipping insertion in model container [2020-10-12 19:10:03,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:10:03" (1/1) ... [2020-10-12 19:10:03,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:10:03,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:10:03,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:10:03,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:10:04,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:10:04,120 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:10:04,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04 WrapperNode [2020-10-12 19:10:04,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:10:04,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:10:04,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:10:04,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:10:04,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04" (1/1) ... [2020-10-12 19:10:04,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04" (1/1) ... [2020-10-12 19:10:04,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04" (1/1) ... [2020-10-12 19:10:04,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04" (1/1) ... [2020-10-12 19:10:04,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04" (1/1) ... [2020-10-12 19:10:04,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04" (1/1) ... [2020-10-12 19:10:04,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04" (1/1) ... [2020-10-12 19:10:04,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:10:04,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:10:04,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:10:04,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:10:04,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:10:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:10:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:10:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:10:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:10:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:10:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:10:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:10:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:10:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:10:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:10:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:10:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:10:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:10:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:10:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:10:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:10:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:10:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:10:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:10:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:10:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:10:05,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:10:05,272 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:10:05,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:10:05 BoogieIcfgContainer [2020-10-12 19:10:05,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:10:05,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:10:05,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:10:05,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:10:05,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:10:03" (1/3) ... [2020-10-12 19:10:05,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553bccfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:10:05, skipping insertion in model container [2020-10-12 19:10:05,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:10:04" (2/3) ... [2020-10-12 19:10:05,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553bccfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:10:05, skipping insertion in model container [2020-10-12 19:10:05,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:10:05" (3/3) ... [2020-10-12 19:10:05,288 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:10:05,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:10:05,307 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:10:05,322 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:10:05,349 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:10:05,349 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:10:05,349 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:10:05,350 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:10:05,350 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:10:05,350 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:10:05,350 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:10:05,350 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:10:05,376 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states. [2020-10-12 19:10:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 19:10:05,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:05,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:05,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:05,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:05,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1025666754, now seen corresponding path program 1 times [2020-10-12 19:10:05,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:05,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435064316] [2020-10-12 19:10:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:06,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:08,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:10,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:10,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 19:10:10,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:10:10,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 19:10:10,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 19:10:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 19:10:11,456 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:10:11,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:11,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:11,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:11,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:11,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:11,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:10:11,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:11,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:11,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:10:11,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435064316] [2020-10-12 19:10:11,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:11,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:11,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911827677] [2020-10-12 19:10:11,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:11,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:11,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:11,574 INFO L87 Difference]: Start difference. First operand 229 states. Second operand 5 states. [2020-10-12 19:10:13,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:13,617 INFO L93 Difference]: Finished difference Result 638 states and 1117 transitions. [2020-10-12 19:10:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:10:13,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-12 19:10:13,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:13,667 INFO L225 Difference]: With dead ends: 638 [2020-10-12 19:10:13,667 INFO L226 Difference]: Without dead ends: 422 [2020-10-12 19:10:13,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:13,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-12 19:10:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 420. [2020-10-12 19:10:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-12 19:10:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 613 transitions. [2020-10-12 19:10:13,815 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 613 transitions. Word has length 99 [2020-10-12 19:10:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:13,816 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 613 transitions. [2020-10-12 19:10:13,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 613 transitions. [2020-10-12 19:10:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 19:10:13,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:13,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:13,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:10:13,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:13,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:13,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1076637966, now seen corresponding path program 1 times [2020-10-12 19:10:13,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:13,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076496448] [2020-10-12 19:10:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:13,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:14,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:16,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:18,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:18,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 19:10:18,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:10:18,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:10:18,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:18,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:18,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:18,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:10:18,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:19,167 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:10:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:19,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:19,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:19,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:19,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:10:19,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:10:19,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076496448] [2020-10-12 19:10:19,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:19,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:19,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980519251] [2020-10-12 19:10:19,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:19,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:19,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:19,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:19,225 INFO L87 Difference]: Start difference. First operand 420 states and 613 transitions. Second operand 5 states. [2020-10-12 19:10:20,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:20,800 INFO L93 Difference]: Finished difference Result 1218 states and 1776 transitions. [2020-10-12 19:10:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:20,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-12 19:10:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:20,806 INFO L225 Difference]: With dead ends: 1218 [2020-10-12 19:10:20,806 INFO L226 Difference]: Without dead ends: 809 [2020-10-12 19:10:20,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-10-12 19:10:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 807. [2020-10-12 19:10:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-10-12 19:10:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1167 transitions. [2020-10-12 19:10:20,851 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1167 transitions. Word has length 100 [2020-10-12 19:10:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:20,852 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1167 transitions. [2020-10-12 19:10:20,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1167 transitions. [2020-10-12 19:10:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 19:10:20,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:20,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:20,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:10:20,855 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:20,855 INFO L82 PathProgramCache]: Analyzing trace with hash -834845759, now seen corresponding path program 1 times [2020-10-12 19:10:20,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:20,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763952737] [2020-10-12 19:10:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:21,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:22,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:25,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:25,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:25,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:25,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 19:10:25,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:10:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:10:25,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:10:25,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:26,135 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:10:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:26,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:26,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:26,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:26,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:10:26,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:10:26,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763952737] [2020-10-12 19:10:26,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:26,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:26,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93109315] [2020-10-12 19:10:26,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:26,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:26,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:26,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:26,180 INFO L87 Difference]: Start difference. First operand 807 states and 1167 transitions. Second operand 5 states. [2020-10-12 19:10:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:27,721 INFO L93 Difference]: Finished difference Result 2323 states and 3350 transitions. [2020-10-12 19:10:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:27,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-12 19:10:27,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:27,734 INFO L225 Difference]: With dead ends: 2323 [2020-10-12 19:10:27,734 INFO L226 Difference]: Without dead ends: 1546 [2020-10-12 19:10:27,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-10-12 19:10:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1544. [2020-10-12 19:10:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-10-12 19:10:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2207 transitions. [2020-10-12 19:10:27,849 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2207 transitions. Word has length 101 [2020-10-12 19:10:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:27,850 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 2207 transitions. [2020-10-12 19:10:27,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2207 transitions. [2020-10-12 19:10:27,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 19:10:27,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:27,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:27,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:10:27,866 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:27,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:27,867 INFO L82 PathProgramCache]: Analyzing trace with hash 745942798, now seen corresponding path program 1 times [2020-10-12 19:10:27,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:27,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036898541] [2020-10-12 19:10:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:27,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:28,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:31,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:31,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:31,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:32,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:32,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 19:10:32,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:10:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:10:32,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 19:10:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:33,187 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:10:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:33,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:33,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:33,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:33,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:10:33,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:33,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:10:33,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036898541] [2020-10-12 19:10:33,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:33,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:33,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137563476] [2020-10-12 19:10:33,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:33,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:33,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:33,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:33,277 INFO L87 Difference]: Start difference. First operand 1544 states and 2207 transitions. Second operand 5 states. [2020-10-12 19:10:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:35,346 INFO L93 Difference]: Finished difference Result 4478 states and 6384 transitions. [2020-10-12 19:10:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:35,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-12 19:10:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:35,368 INFO L225 Difference]: With dead ends: 4478 [2020-10-12 19:10:35,369 INFO L226 Difference]: Without dead ends: 2991 [2020-10-12 19:10:35,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-10-12 19:10:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2989. [2020-10-12 19:10:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2989 states. [2020-10-12 19:10:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 4222 transitions. [2020-10-12 19:10:35,629 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 4222 transitions. Word has length 102 [2020-10-12 19:10:35,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:35,629 INFO L479 AbstractCegarLoop]: Abstraction has 2989 states and 4222 transitions. [2020-10-12 19:10:35,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 4222 transitions. [2020-10-12 19:10:35,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 19:10:35,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:35,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:35,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:10:35,638 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:35,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:35,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1253942528, now seen corresponding path program 1 times [2020-10-12 19:10:35,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:35,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469591488] [2020-10-12 19:10:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:35,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:35,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:35,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:40,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:40,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 19:10:40,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:10:40,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:10:40,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:10:40,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:41,018 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:10:41,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:41,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:41,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:41,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:10:41,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:10:41,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469591488] [2020-10-12 19:10:41,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:41,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:41,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534998275] [2020-10-12 19:10:41,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:41,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:41,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:41,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:41,068 INFO L87 Difference]: Start difference. First operand 2989 states and 4222 transitions. Second operand 5 states. [2020-10-12 19:10:43,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:43,570 INFO L93 Difference]: Finished difference Result 7609 states and 10884 transitions. [2020-10-12 19:10:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:43,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-12 19:10:43,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:43,599 INFO L225 Difference]: With dead ends: 7609 [2020-10-12 19:10:43,599 INFO L226 Difference]: Without dead ends: 5687 [2020-10-12 19:10:43,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2020-10-12 19:10:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5685. [2020-10-12 19:10:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5685 states. [2020-10-12 19:10:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7922 transitions. [2020-10-12 19:10:43,975 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7922 transitions. Word has length 103 [2020-10-12 19:10:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:43,976 INFO L479 AbstractCegarLoop]: Abstraction has 5685 states and 7922 transitions. [2020-10-12 19:10:43,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7922 transitions. [2020-10-12 19:10:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 19:10:43,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:43,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:43,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:10:43,986 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:43,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2032348018, now seen corresponding path program 1 times [2020-10-12 19:10:43,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:43,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859870386] [2020-10-12 19:10:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:49,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:49,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 19:10:49,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:10:49,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:10:49,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 19:10:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 19:10:49,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:49,313 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:10:49,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:49,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:49,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:49,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:49,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:49,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:10:49,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:49,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:49,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:10:49,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859870386] [2020-10-12 19:10:49,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:49,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:49,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048629196] [2020-10-12 19:10:49,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:49,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:49,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:49,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:49,378 INFO L87 Difference]: Start difference. First operand 5685 states and 7922 transitions. Second operand 5 states. [2020-10-12 19:10:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:50,742 INFO L93 Difference]: Finished difference Result 8800 states and 12368 transitions. [2020-10-12 19:10:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:50,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-12 19:10:50,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:50,764 INFO L225 Difference]: With dead ends: 8800 [2020-10-12 19:10:50,765 INFO L226 Difference]: Without dead ends: 3662 [2020-10-12 19:10:50,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2020-10-12 19:10:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3661. [2020-10-12 19:10:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3661 states. [2020-10-12 19:10:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5077 transitions. [2020-10-12 19:10:51,039 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 5077 transitions. Word has length 104 [2020-10-12 19:10:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:51,039 INFO L479 AbstractCegarLoop]: Abstraction has 3661 states and 5077 transitions. [2020-10-12 19:10:51,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 5077 transitions. [2020-10-12 19:10:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 19:10:51,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:51,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:51,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:10:51,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:51,051 INFO L82 PathProgramCache]: Analyzing trace with hash -549706089, now seen corresponding path program 1 times [2020-10-12 19:10:51,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:51,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24257623] [2020-10-12 19:10:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:51,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:51,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:53,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:53,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:56,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:56,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 19:10:56,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:10:56,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:10:56,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:56,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:10:56,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:10:56,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 19:10:56,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:10:56,325 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:10:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:10:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:56,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:56,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:10:56,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:10:56,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:10:56,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:10:56,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:10:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:10:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:10:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:10:56,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:10:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:10:56,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24257623] [2020-10-12 19:10:56,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:10:56,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:10:56,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35165388] [2020-10-12 19:10:56,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:10:56,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:10:56,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:10:56,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:10:56,400 INFO L87 Difference]: Start difference. First operand 3661 states and 5077 transitions. Second operand 5 states. [2020-10-12 19:10:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:10:58,553 INFO L93 Difference]: Finished difference Result 10531 states and 14526 transitions. [2020-10-12 19:10:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:10:58,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-12 19:10:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:10:58,586 INFO L225 Difference]: With dead ends: 10531 [2020-10-12 19:10:58,586 INFO L226 Difference]: Without dead ends: 7011 [2020-10-12 19:10:58,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:10:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7011 states. [2020-10-12 19:10:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7011 to 7009. [2020-10-12 19:10:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7009 states. [2020-10-12 19:10:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 9556 transitions. [2020-10-12 19:10:59,024 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 9556 transitions. Word has length 107 [2020-10-12 19:10:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:10:59,025 INFO L479 AbstractCegarLoop]: Abstraction has 7009 states and 9556 transitions. [2020-10-12 19:10:59,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:10:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 9556 transitions. [2020-10-12 19:10:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:10:59,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:10:59,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:10:59,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:10:59,037 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:10:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:10:59,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1285979482, now seen corresponding path program 1 times [2020-10-12 19:10:59,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:10:59,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445879339] [2020-10-12 19:10:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:10:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:10:59,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:59,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:10:59,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:04,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:04,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:11:04,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:11:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:11:04,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 19:11:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 19:11:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:04,308 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:11:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:04,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:04,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:04,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:04,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:11:04,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:11:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:04,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445879339] [2020-10-12 19:11:04,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:04,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:04,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507649313] [2020-10-12 19:11:04,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:04,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:04,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:04,375 INFO L87 Difference]: Start difference. First operand 7009 states and 9556 transitions. Second operand 5 states. [2020-10-12 19:11:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:05,678 INFO L93 Difference]: Finished difference Result 10157 states and 14082 transitions. [2020-10-12 19:11:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:05,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 19:11:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:05,702 INFO L225 Difference]: With dead ends: 10157 [2020-10-12 19:11:05,702 INFO L226 Difference]: Without dead ends: 5706 [2020-10-12 19:11:05,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2020-10-12 19:11:06,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5703. [2020-10-12 19:11:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5703 states. [2020-10-12 19:11:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5703 states to 5703 states and 7759 transitions. [2020-10-12 19:11:06,019 INFO L78 Accepts]: Start accepts. Automaton has 5703 states and 7759 transitions. Word has length 108 [2020-10-12 19:11:06,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:06,019 INFO L479 AbstractCegarLoop]: Abstraction has 5703 states and 7759 transitions. [2020-10-12 19:11:06,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5703 states and 7759 transitions. [2020-10-12 19:11:06,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 19:11:06,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:06,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:06,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:11:06,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:06,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1489732164, now seen corresponding path program 1 times [2020-10-12 19:11:06,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:06,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589708694] [2020-10-12 19:11:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:06,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:06,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:11,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:11,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 19:11:11,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:11:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:11:11,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:11:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:11:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:11:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:11:11,412 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:11:11,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:11,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:11,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:11,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:11,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 19:11:11,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:11:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:11:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:11:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:11,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589708694] [2020-10-12 19:11:11,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:11,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:11,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034586562] [2020-10-12 19:11:11,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:11:11,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:11,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:11:11,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:11,499 INFO L87 Difference]: Start difference. First operand 5703 states and 7759 transitions. Second operand 6 states. [2020-10-12 19:11:11,708 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:11:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:13,033 INFO L93 Difference]: Finished difference Result 12074 states and 17117 transitions. [2020-10-12 19:11:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:11:13,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-12 19:11:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:13,054 INFO L225 Difference]: With dead ends: 12074 [2020-10-12 19:11:13,054 INFO L226 Difference]: Without dead ends: 8020 [2020-10-12 19:11:13,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:11:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8020 states. [2020-10-12 19:11:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8020 to 8018. [2020-10-12 19:11:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8018 states. [2020-10-12 19:11:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 11191 transitions. [2020-10-12 19:11:13,623 INFO L78 Accepts]: Start accepts. Automaton has 8018 states and 11191 transitions. Word has length 111 [2020-10-12 19:11:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:13,623 INFO L479 AbstractCegarLoop]: Abstraction has 8018 states and 11191 transitions. [2020-10-12 19:11:13,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:11:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 8018 states and 11191 transitions. [2020-10-12 19:11:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 19:11:13,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:13,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:13,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:11:13,633 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1962495105, now seen corresponding path program 1 times [2020-10-12 19:11:13,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:13,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032156966] [2020-10-12 19:11:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:13,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:18,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:18,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 19:11:18,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:11:18,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:11:18,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 19:11:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 19:11:18,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:18,876 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:11:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:18,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:18,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:18,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:18,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:11:18,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:18,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032156966] [2020-10-12 19:11:18,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:18,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:18,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448847794] [2020-10-12 19:11:18,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:18,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:18,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:18,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:18,919 INFO L87 Difference]: Start difference. First operand 8018 states and 11191 transitions. Second operand 5 states. [2020-10-12 19:11:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:19,984 INFO L93 Difference]: Finished difference Result 12713 states and 18004 transitions. [2020-10-12 19:11:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:19,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 19:11:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:20,001 INFO L225 Difference]: With dead ends: 12713 [2020-10-12 19:11:20,001 INFO L226 Difference]: Without dead ends: 5804 [2020-10-12 19:11:20,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5804 states. [2020-10-12 19:11:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5804 to 5790. [2020-10-12 19:11:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5790 states. [2020-10-12 19:11:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5790 states to 5790 states and 8088 transitions. [2020-10-12 19:11:20,399 INFO L78 Accepts]: Start accepts. Automaton has 5790 states and 8088 transitions. Word has length 111 [2020-10-12 19:11:20,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:20,399 INFO L479 AbstractCegarLoop]: Abstraction has 5790 states and 8088 transitions. [2020-10-12 19:11:20,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5790 states and 8088 transitions. [2020-10-12 19:11:20,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:11:20,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:20,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:20,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:11:20,413 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:20,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1013912439, now seen corresponding path program 1 times [2020-10-12 19:11:20,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:20,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900010570] [2020-10-12 19:11:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:20,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:21,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:23,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:23,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:25,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:25,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:11:25,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:11:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 19:11:25,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:25,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:11:25,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:11:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 19:11:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:11:25,699 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:11:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:25,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:25,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:25,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:11:25,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:11:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:11:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:11:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:25,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900010570] [2020-10-12 19:11:25,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:25,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:25,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184107907] [2020-10-12 19:11:25,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:11:25,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:25,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:11:25,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:25,778 INFO L87 Difference]: Start difference. First operand 5790 states and 8088 transitions. Second operand 6 states. [2020-10-12 19:11:25,984 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:11:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:27,153 INFO L93 Difference]: Finished difference Result 10213 states and 14575 transitions. [2020-10-12 19:11:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:11:27,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-12 19:11:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:27,167 INFO L225 Difference]: With dead ends: 10213 [2020-10-12 19:11:27,167 INFO L226 Difference]: Without dead ends: 5790 [2020-10-12 19:11:27,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:11:27,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2020-10-12 19:11:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 5790. [2020-10-12 19:11:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5790 states. [2020-10-12 19:11:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5790 states to 5790 states and 8001 transitions. [2020-10-12 19:11:27,616 INFO L78 Accepts]: Start accepts. Automaton has 5790 states and 8001 transitions. Word has length 114 [2020-10-12 19:11:27,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:27,617 INFO L479 AbstractCegarLoop]: Abstraction has 5790 states and 8001 transitions. [2020-10-12 19:11:27,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:11:27,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5790 states and 8001 transitions. [2020-10-12 19:11:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:11:27,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:27,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:27,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:11:27,623 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:27,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:27,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1468442332, now seen corresponding path program 1 times [2020-10-12 19:11:27,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:27,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444167552] [2020-10-12 19:11:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:27,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:28,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:28,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:28,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:28,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:32,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:32,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:11:32,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:11:32,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:11:32,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 19:11:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:11:32,952 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:11:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:32,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:32,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:32,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:11:32,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:33,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444167552] [2020-10-12 19:11:33,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:33,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:33,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751444778] [2020-10-12 19:11:33,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:33,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:33,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:33,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:33,005 INFO L87 Difference]: Start difference. First operand 5790 states and 8001 transitions. Second operand 5 states. [2020-10-12 19:11:33,235 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:11:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:35,139 INFO L93 Difference]: Finished difference Result 9685 states and 13451 transitions. [2020-10-12 19:11:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:11:35,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 19:11:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:35,151 INFO L225 Difference]: With dead ends: 9685 [2020-10-12 19:11:35,151 INFO L226 Difference]: Without dead ends: 5792 [2020-10-12 19:11:35,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:35,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2020-10-12 19:11:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 5790. [2020-10-12 19:11:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5790 states. [2020-10-12 19:11:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5790 states to 5790 states and 7958 transitions. [2020-10-12 19:11:35,582 INFO L78 Accepts]: Start accepts. Automaton has 5790 states and 7958 transitions. Word has length 114 [2020-10-12 19:11:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:35,583 INFO L479 AbstractCegarLoop]: Abstraction has 5790 states and 7958 transitions. [2020-10-12 19:11:35,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5790 states and 7958 transitions. [2020-10-12 19:11:35,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:11:35,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:35,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:35,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:11:35,589 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:35,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1962972066, now seen corresponding path program 1 times [2020-10-12 19:11:35,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:35,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027285575] [2020-10-12 19:11:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:35,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:35,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:35,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:37,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:40,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:40,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:11:40,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:11:40,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:11:40,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:40,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:11:40,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 19:11:40,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 19:11:40,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:40,805 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:11:40,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:40,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:40,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:40,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:40,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:40,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:11:40,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:40,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027285575] [2020-10-12 19:11:40,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:40,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:11:40,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103477343] [2020-10-12 19:11:40,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:11:40,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:11:40,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:11:40,829 INFO L87 Difference]: Start difference. First operand 5790 states and 7958 transitions. Second operand 5 states. [2020-10-12 19:11:41,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:41,935 INFO L93 Difference]: Finished difference Result 10406 states and 14358 transitions. [2020-10-12 19:11:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:11:41,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 19:11:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:41,946 INFO L225 Difference]: With dead ends: 10406 [2020-10-12 19:11:41,946 INFO L226 Difference]: Without dead ends: 5002 [2020-10-12 19:11:41,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2020-10-12 19:11:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 4992. [2020-10-12 19:11:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4992 states. [2020-10-12 19:11:42,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 6837 transitions. [2020-10-12 19:11:42,365 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 6837 transitions. Word has length 115 [2020-10-12 19:11:42,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:42,365 INFO L479 AbstractCegarLoop]: Abstraction has 4992 states and 6837 transitions. [2020-10-12 19:11:42,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:11:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 6837 transitions. [2020-10-12 19:11:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:11:42,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:42,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:42,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:11:42,371 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:42,372 INFO L82 PathProgramCache]: Analyzing trace with hash 2027242611, now seen corresponding path program 1 times [2020-10-12 19:11:42,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:42,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192877645] [2020-10-12 19:11:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:42,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:43,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:43,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:11:43,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 19:11:43,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-12 19:11:43,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:11:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:11:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 19:11:43,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:43,642 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:11:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:43,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:43,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:43,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:43,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:11:43,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:43,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192877645] [2020-10-12 19:11:43,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:43,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:11:43,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487349231] [2020-10-12 19:11:43,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:11:43,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:43,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:11:43,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:11:43,692 INFO L87 Difference]: Start difference. First operand 4992 states and 6837 transitions. Second operand 11 states. [2020-10-12 19:11:43,912 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:11:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:49,017 INFO L93 Difference]: Finished difference Result 39564 states and 58821 transitions. [2020-10-12 19:11:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:11:49,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 117 [2020-10-12 19:11:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:49,060 INFO L225 Difference]: With dead ends: 39564 [2020-10-12 19:11:49,060 INFO L226 Difference]: Without dead ends: 36384 [2020-10-12 19:11:49,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:11:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36384 states. [2020-10-12 19:11:49,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36384 to 8696. [2020-10-12 19:11:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8696 states. [2020-10-12 19:11:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8696 states to 8696 states and 12163 transitions. [2020-10-12 19:11:50,097 INFO L78 Accepts]: Start accepts. Automaton has 8696 states and 12163 transitions. Word has length 117 [2020-10-12 19:11:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:50,097 INFO L479 AbstractCegarLoop]: Abstraction has 8696 states and 12163 transitions. [2020-10-12 19:11:50,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:11:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 8696 states and 12163 transitions. [2020-10-12 19:11:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:11:50,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:50,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:50,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:11:50,104 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:50,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1000880291, now seen corresponding path program 1 times [2020-10-12 19:11:50,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:50,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273164961] [2020-10-12 19:11:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:50,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:50,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:11:50,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 19:11:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-12 19:11:50,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:11:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 19:11:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 19:11:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:50,701 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:11:50,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:11:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:50,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:11:50,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:11:50,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:11:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:11:50,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:11:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:11:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:11:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:11:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:11:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:11:50,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273164961] [2020-10-12 19:11:50,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:11:50,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:11:50,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372833854] [2020-10-12 19:11:50,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:11:50,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:11:50,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:11:50,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:11:50,747 INFO L87 Difference]: Start difference. First operand 8696 states and 12163 transitions. Second operand 6 states. [2020-10-12 19:11:50,986 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-12 19:11:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:11:56,638 INFO L93 Difference]: Finished difference Result 40292 states and 61201 transitions. [2020-10-12 19:11:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:11:56,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-12 19:11:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:11:56,691 INFO L225 Difference]: With dead ends: 40292 [2020-10-12 19:11:56,691 INFO L226 Difference]: Without dead ends: 35002 [2020-10-12 19:11:56,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:11:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35002 states. [2020-10-12 19:11:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35002 to 13984. [2020-10-12 19:11:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13984 states. [2020-10-12 19:11:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13984 states to 13984 states and 20107 transitions. [2020-10-12 19:11:58,331 INFO L78 Accepts]: Start accepts. Automaton has 13984 states and 20107 transitions. Word has length 117 [2020-10-12 19:11:58,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:11:58,331 INFO L479 AbstractCegarLoop]: Abstraction has 13984 states and 20107 transitions. [2020-10-12 19:11:58,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:11:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 13984 states and 20107 transitions. [2020-10-12 19:11:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:11:58,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:11:58,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:11:58,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:11:58,336 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:11:58,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:11:58,337 INFO L82 PathProgramCache]: Analyzing trace with hash -449238055, now seen corresponding path program 1 times [2020-10-12 19:11:58,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:11:58,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707949271] [2020-10-12 19:11:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:11:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:11:58,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:58,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:11:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:00,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:03,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:03,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:12:03,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:12:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:12:03,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 19:12:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:12:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 19:12:03,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:12:04,350 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:12:04,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:12:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:12:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:12:04,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:12:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:12:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:12:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:12:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:12:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:12:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:12:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:12:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:12:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:12:04,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707949271] [2020-10-12 19:12:04,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:12:04,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-12 19:12:04,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559867300] [2020-10-12 19:12:04,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:12:04,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:12:04,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:12:04,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:12:04,411 INFO L87 Difference]: Start difference. First operand 13984 states and 20107 transitions. Second operand 19 states. [2020-10-12 19:12:04,664 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:12:05,349 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-12 19:12:05,931 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-12 19:12:06,366 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-10-12 19:12:07,032 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 103 [2020-10-12 19:12:07,611 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 107 [2020-10-12 19:12:16,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:12:16,250 INFO L93 Difference]: Finished difference Result 42189 states and 61802 transitions. [2020-10-12 19:12:16,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:12:16,251 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 117 [2020-10-12 19:12:16,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:12:16,290 INFO L225 Difference]: With dead ends: 42189 [2020-10-12 19:12:16,290 INFO L226 Difference]: Without dead ends: 37191 [2020-10-12 19:12:16,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:12:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37191 states. [2020-10-12 19:12:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37191 to 14677. [2020-10-12 19:12:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14677 states. [2020-10-12 19:12:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14677 states to 14677 states and 20928 transitions. [2020-10-12 19:12:18,172 INFO L78 Accepts]: Start accepts. Automaton has 14677 states and 20928 transitions. Word has length 117 [2020-10-12 19:12:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:12:18,172 INFO L479 AbstractCegarLoop]: Abstraction has 14677 states and 20928 transitions. [2020-10-12 19:12:18,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 19:12:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 14677 states and 20928 transitions. [2020-10-12 19:12:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:12:18,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:12:18,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:12:18,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:12:18,178 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:12:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:12:18,178 INFO L82 PathProgramCache]: Analyzing trace with hash -413635384, now seen corresponding path program 1 times [2020-10-12 19:12:18,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:12:18,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693179542] [2020-10-12 19:12:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:12:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 19:12:18,212 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 19:12:18,212 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 19:12:18,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:12:18,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 07:12:18 BoogieIcfgContainer [2020-10-12 19:12:18,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 19:12:18,262 INFO L168 Benchmark]: Toolchain (without parser) took 134879.29 ms. Allocated memory was 140.0 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 101.7 MB in the beginning and 842.9 MB in the end (delta: -741.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2020-10-12 19:12:18,263 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. [2020-10-12 19:12:18,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.35 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 173.9 MB in the end (delta: -72.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-10-12 19:12:18,264 INFO L168 Benchmark]: Boogie Preprocessor took 77.33 ms. Allocated memory is still 203.9 MB. Free memory was 173.9 MB in the beginning and 170.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-12 19:12:18,265 INFO L168 Benchmark]: RCFGBuilder took 1078.61 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 170.8 MB in the beginning and 199.6 MB in the end (delta: -28.8 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2020-10-12 19:12:18,265 INFO L168 Benchmark]: TraceAbstraction took 132980.06 ms. Allocated memory was 237.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 199.6 MB in the beginning and 842.9 MB in the end (delta: -643.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2020-10-12 19:12:18,268 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.35 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 173.9 MB in the end (delta: -72.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.33 ms. Allocated memory is still 203.9 MB. Free memory was 173.9 MB in the beginning and 170.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1078.61 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 170.8 MB in the beginning and 199.6 MB in the end (delta: -28.8 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 132980.06 ms. Allocated memory was 237.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 199.6 MB in the beginning and 842.9 MB in the end (delta: -643.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 539]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] char id2 = '\x0'; [L48] unsigned char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] char id3 = '\x0'; [L55] unsigned char r3 = '\x0'; [L56] char st3 = '\x0'; [L57] char nl3 = '\x0'; [L58] char m3 = '\x0'; [L59] char max3 = '\x0'; [L60] _Bool mode3 = 0; [L64] void (*nodes[3])() = { &node1, &node2, &node3 }; [L68] int __return_1142; [L69] int __return_1270; [L70] int __return_1389; [L71] int __return_1499; [L74] int main__c1; [L75] int main__i2; [L76] main__c1 = 0 [L77] ep12 = __VERIFIER_nondet_bool() [L78] ep13 = __VERIFIER_nondet_bool() [L79] ep21 = __VERIFIER_nondet_bool() [L80] ep23 = __VERIFIER_nondet_bool() [L81] ep31 = __VERIFIER_nondet_bool() [L82] ep32 = __VERIFIER_nondet_bool() [L83] id1 = __VERIFIER_nondet_char() [L84] r1 = __VERIFIER_nondet_uchar() [L85] st1 = __VERIFIER_nondet_char() [L86] nl1 = __VERIFIER_nondet_char() [L87] m1 = __VERIFIER_nondet_char() [L88] max1 = __VERIFIER_nondet_char() [L89] mode1 = __VERIFIER_nondet_bool() [L90] id2 = __VERIFIER_nondet_char() [L91] r2 = __VERIFIER_nondet_uchar() [L92] st2 = __VERIFIER_nondet_char() [L93] nl2 = __VERIFIER_nondet_char() [L94] m2 = __VERIFIER_nondet_char() [L95] max2 = __VERIFIER_nondet_char() [L96] mode2 = __VERIFIER_nondet_bool() [L97] id3 = __VERIFIER_nondet_char() [L98] r3 = __VERIFIER_nondet_uchar() [L99] st3 = __VERIFIER_nondet_char() [L100] nl3 = __VERIFIER_nondet_char() [L101] m3 = __VERIFIER_nondet_char() [L102] max3 = __VERIFIER_nondet_char() [L103] mode3 = __VERIFIER_nondet_bool() [L105] _Bool init__r121; [L106] _Bool init__r131; [L107] _Bool init__r211; [L108] _Bool init__r231; [L109] _Bool init__r311; [L110] _Bool init__r321; [L111] _Bool init__r122; [L112] int init__tmp; [L113] _Bool init__r132; [L114] int init__tmp___0; [L115] _Bool init__r212; [L116] int init__tmp___1; [L117] _Bool init__r232; [L118] int init__tmp___2; [L119] _Bool init__r312; [L120] int init__tmp___3; [L121] _Bool init__r322; [L122] int init__tmp___4; [L123] int init__tmp___5; [L124] init__r121 = ep12 [L125] init__r131 = ep13 [L126] init__r211 = ep21 [L127] init__r231 = ep23 [L128] init__r311 = ep31 [L129] init__r321 = ep32 [L130] COND TRUE !(init__r121 == 0) [L132] init__tmp = 1 [L134] init__r122 = (_Bool)init__tmp [L135] COND FALSE !(!(init__r131 == 0)) [L1615] COND TRUE !(init__r121 == 0) [L1617] COND TRUE !(ep23 == 0) [L1619] init__tmp___0 = 1 [L139] init__r132 = (_Bool)init__tmp___0 [L140] COND FALSE !(!(init__r211 == 0)) [L1592] COND TRUE !(init__r231 == 0) [L1594] COND TRUE !(ep31 == 0) [L1596] init__tmp___1 = 1 [L144] init__r212 = (_Bool)init__tmp___1 [L145] COND TRUE !(init__r231 == 0) [L147] init__tmp___2 = 1 [L149] init__r232 = (_Bool)init__tmp___2 [L150] COND TRUE !(init__r311 == 0) [L152] init__tmp___3 = 1 [L154] init__r312 = (_Bool)init__tmp___3 [L155] COND FALSE !(!(init__r321 == 0)) [L1523] COND TRUE !(init__r311 == 0) [L1525] COND TRUE !(ep12 == 0) [L1527] init__tmp___4 = 1 [L159] init__r322 = (_Bool)init__tmp___4 [L160] COND TRUE ((int)id1) != ((int)id2) [L162] COND TRUE ((int)id1) != ((int)id3) [L164] COND TRUE ((int)id2) != ((int)id3) [L166] COND TRUE ((int)id1) >= 0 [L168] COND TRUE ((int)id2) >= 0 [L170] COND TRUE ((int)id3) >= 0 [L172] COND TRUE ((int)r1) == 0 [L174] COND TRUE ((int)r2) == 0 [L176] COND TRUE ((int)r3) == 0 [L178] COND TRUE !(init__r122 == 0) [L180] COND TRUE !(init__r132 == 0) [L182] COND TRUE !(init__r212 == 0) [L184] COND TRUE !(init__r232 == 0) [L186] COND TRUE !(init__r312 == 0) [L188] COND TRUE !(init__r322 == 0) [L190] COND TRUE ((int)max1) == ((int)id1) [L192] COND TRUE ((int)max2) == ((int)id2) [L194] COND TRUE ((int)max3) == ((int)id3) [L196] COND TRUE ((int)st1) == 0 [L198] COND TRUE ((int)st2) == 0 [L200] COND TRUE ((int)st3) == 0 [L202] COND TRUE ((int)nl1) == 0 [L204] COND TRUE ((int)nl2) == 0 [L206] COND TRUE ((int)nl3) == 0 [L208] COND TRUE ((int)mode1) == 0 [L210] COND TRUE ((int)mode2) == 0 [L212] COND TRUE ((int)mode3) == 0 [L214] init__tmp___5 = 1 [L215] __return_1142 = init__tmp___5 [L216] main__i2 = __return_1142 [L217] COND TRUE main__i2 != 0 [L219] p12_old = nomsg [L220] p12_new = nomsg [L221] p13_old = nomsg [L222] p13_new = nomsg [L223] p21_old = nomsg [L224] p21_new = nomsg [L225] p23_old = nomsg [L226] p23_new = nomsg [L227] p31_old = nomsg [L228] p31_new = nomsg [L229] p32_old = nomsg [L230] p32_new = nomsg [L231] main__i2 = 0 [L233] COND FALSE !(!(mode1 == 0)) [L239] COND TRUE ((int)r1) < 2 [L241] COND TRUE !(ep12 == 0) [L243] int node1____CPAchecker_TMP_0; [L244] COND TRUE max1 != nomsg [L246] COND TRUE p12_new == nomsg [L248] node1____CPAchecker_TMP_0 = max1 [L250] p12_new = node1____CPAchecker_TMP_0 [L252] COND FALSE !(!(ep13 == 0)) [L263] mode1 = 1 [L265] COND FALSE !(!(mode2 == 0)) [L271] COND TRUE ((int)r2) < 2 [L273] COND FALSE !(!(ep21 == 0)) [L284] COND TRUE !(ep23 == 0) [L286] int node2____CPAchecker_TMP_1; [L287] COND TRUE max2 != nomsg [L289] COND TRUE p23_new == nomsg [L291] node2____CPAchecker_TMP_1 = max2 [L293] p23_new = node2____CPAchecker_TMP_1 [L295] mode2 = 1 [L297] COND FALSE !(!(mode3 == 0)) [L303] COND TRUE ((int)r3) < 2 [L305] COND TRUE !(ep31 == 0) [L307] int node3____CPAchecker_TMP_0; [L308] COND TRUE max3 != nomsg [L310] COND TRUE p31_new == nomsg [L312] node3____CPAchecker_TMP_0 = max3 [L314] p31_new = node3____CPAchecker_TMP_0 [L316] COND FALSE !(!(ep32 == 0)) [L327] mode3 = 1 [L328] p12_old = p12_new [L329] p12_new = nomsg [L330] p13_old = p13_new [L331] p13_new = nomsg [L332] p21_old = p21_new [L333] p21_new = nomsg [L334] p23_old = p23_new [L335] p23_new = nomsg [L336] p31_old = p31_new [L337] p31_new = nomsg [L338] p32_old = p32_new [L339] p32_new = nomsg [L341] int check__tmp; [L342] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L344] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L346] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L348] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L350] COND FALSE !(((int)r1) >= 2) [L356] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L358] COND TRUE ((int)r1) < 2 [L360] COND FALSE !(((int)r1) >= 2) [L366] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L368] COND TRUE ((int)r1) < 2 [L370] check__tmp = 1 [L371] __return_1270 = check__tmp [L372] main__c1 = __return_1270 [L374] _Bool __tmp_1; [L375] __tmp_1 = main__c1 [L376] _Bool assert__arg; [L377] assert__arg = __tmp_1 [L378] COND FALSE !(assert__arg == 0) [L385] COND TRUE !(mode1 == 0) [L387] COND FALSE !(r1 == 255) [L393] r1 = r1 + 1 [L394] COND FALSE !(!(ep21 == 0)) [L402] COND TRUE !(ep31 == 0) [L404] m1 = p31_old [L405] p31_old = nomsg [L406] COND FALSE !(((int)m1) > ((int)max1)) [L410] COND TRUE ((int)r1) == 1 [L412] COND TRUE ((int)max1) == ((int)id1) [L414] st1 = 1 [L416] mode1 = 0 [L418] COND TRUE !(mode2 == 0) [L420] COND FALSE !(r2 == 255) [L426] r2 = r2 + 1 [L427] COND TRUE !(ep12 == 0) [L429] m2 = p12_old [L430] p12_old = nomsg [L431] COND FALSE !(((int)m2) > ((int)max2)) [L435] COND FALSE !(!(ep32 == 0)) [L443] COND FALSE !(((int)r2) == 2) [L449] mode2 = 0 [L451] COND TRUE !(mode3 == 0) [L453] COND FALSE !(r3 == 255) [L459] r3 = r3 + 1 [L460] COND FALSE !(!(ep13 == 0)) [L468] COND TRUE !(ep23 == 0) [L470] m3 = p23_old [L471] p23_old = nomsg [L472] COND TRUE ((int)m3) > ((int)max3) [L474] max3 = m3 [L476] COND FALSE !(((int)r3) == 2) [L482] mode3 = 0 [L483] p12_old = p12_new [L484] p12_new = nomsg [L485] p13_old = p13_new [L486] p13_new = nomsg [L487] p21_old = p21_new [L488] p21_new = nomsg [L489] p23_old = p23_new [L490] p23_new = nomsg [L491] p31_old = p31_new [L492] p31_new = nomsg [L493] p32_old = p32_new [L494] p32_new = nomsg [L496] int check__tmp; [L497] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L499] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L501] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L503] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L505] COND FALSE !(((int)r1) >= 2) [L511] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L1093] check__tmp = 0 [L529] __return_1389 = check__tmp [L530] main__c1 = __return_1389 [L533] _Bool __tmp_2; [L534] __tmp_2 = main__c1 [L535] _Bool assert__arg; [L536] assert__arg = __tmp_2 [L537] COND TRUE assert__arg == 0 [L539] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 132.8s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 45.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7119 SDtfs, 13195 SDslu, 15690 SDs, 0 SdLazy, 11173 SolverSat, 269 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14677occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.6s AutomataMinimizationTime, 16 MinimizatonAttempts, 71264 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 77.1s InterpolantComputationTime, 1857 NumberOfCodeBlocks, 1857 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1724 ConstructedInterpolants, 0 QuantifiedInterpolants, 1442880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...