/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_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:01:06,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:01:06,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:01:06,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:01:06,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:01:06,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:01:06,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:01:06,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:01:06,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:01:06,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:01:06,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:01:06,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:01:06,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:01:06,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:01:06,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:01:06,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:01:06,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:01:06,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:01:06,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:01:06,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:01:06,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:01:06,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:01:06,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:01:06,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:01:06,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:01:06,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:01:06,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:01:06,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:01:06,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:01:06,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:01:07,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:01:07,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:01:07,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:01:07,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:01:07,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:01:07,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:01:07,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:01:07,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:01:07,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:01:07,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:01:07,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:01:07,011 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 20:01:07,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:01:07,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:01:07,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:01:07,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:01:07,064 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:01:07,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:01:07,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:01:07,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:01:07,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:01:07,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:01:07,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:01:07,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:01:07,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:01:07,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:01:07,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:01:07,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:01:07,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:01:07,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:01:07,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:01:07,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:01:07,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:01:07,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:01:07,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:01:07,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:01:07,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:01:07,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:01:07,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:01:07,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:01:07,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:01:07,072 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 20:01:07,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:01:07,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:01:07,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:01:07,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:01:07,438 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:01:07,439 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-12 20:01:07,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/886484396/84f7df9f0cb0484abd5c96e9a6ba0bba/FLAGb73deb637 [2020-10-12 20:01:08,270 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:01:08,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-12 20:01:08,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/886484396/84f7df9f0cb0484abd5c96e9a6ba0bba/FLAGb73deb637 [2020-10-12 20:01:08,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/886484396/84f7df9f0cb0484abd5c96e9a6ba0bba [2020-10-12 20:01:08,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:01:08,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:01:08,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:01:08,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:01:08,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:01:08,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:01:08" (1/1) ... [2020-10-12 20:01:08,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb94e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:08, skipping insertion in model container [2020-10-12 20:01:08,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:01:08" (1/1) ... [2020-10-12 20:01:08,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:01:08,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:01:10,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:01:10,276 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:01:10,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:01:10,953 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:01:10,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10 WrapperNode [2020-10-12 20:01:10,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:01:10,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:01:10,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:01:10,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:01:10,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10" (1/1) ... [2020-10-12 20:01:10,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10" (1/1) ... [2020-10-12 20:01:11,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10" (1/1) ... [2020-10-12 20:01:11,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10" (1/1) ... [2020-10-12 20:01:11,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10" (1/1) ... [2020-10-12 20:01:11,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10" (1/1) ... [2020-10-12 20:01:11,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10" (1/1) ... [2020-10-12 20:01:11,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:01:11,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:01:11,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:01:11,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:01:11,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10" (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 20:01:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:01:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:01:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:01:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:01:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:01:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:01:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:01:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:01:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:01:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:01:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:01:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:01:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:01:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:01:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:01:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:01:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:01:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:01:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:01:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:01:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:01:16,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:01:16,275 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:01:16,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:01:16 BoogieIcfgContainer [2020-10-12 20:01:16,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:01:16,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:01:16,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:01:16,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:01:16,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:01:08" (1/3) ... [2020-10-12 20:01:16,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42312fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:01:16, skipping insertion in model container [2020-10-12 20:01:16,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:01:10" (2/3) ... [2020-10-12 20:01:16,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42312fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:01:16, skipping insertion in model container [2020-10-12 20:01:16,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:01:16" (3/3) ... [2020-10-12 20:01:16,308 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-12 20:01:16,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:01:16,332 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-12 20:01:16,348 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-12 20:01:16,384 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:01:16,386 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:01:16,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:01:16,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:01:16,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:01:16,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:01:16,387 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:01:16,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:01:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states. [2020-10-12 20:01:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:01:16,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:16,483 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] [2020-10-12 20:01:16,483 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1405388640, now seen corresponding path program 1 times [2020-10-12 20:01:16,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:16,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698509822] [2020-10-12 20:01:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:20,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:22,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:22,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:01:22,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:01:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:01:22,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 20:01:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:01:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 20:01:22,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:01:24,604 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-12 20:01:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:24,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:24,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:24,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:24,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 20:01:24,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:01:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:01:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:01:24,847 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 20:01:24,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698509822] [2020-10-12 20:01:24,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:24,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 20:01:24,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698610308] [2020-10-12 20:01:24,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 20:01:24,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:24,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 20:01:24,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:01:24,886 INFO L87 Difference]: Start difference. First operand 2051 states. Second operand 14 states. [2020-10-12 20:01:29,201 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 674 DAG size of output: 672 [2020-10-12 20:01:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:59,324 INFO L93 Difference]: Finished difference Result 5725 states and 9486 transitions. [2020-10-12 20:01:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-12 20:01:59,326 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-10-12 20:01:59,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:59,397 INFO L225 Difference]: With dead ends: 5725 [2020-10-12 20:01:59,397 INFO L226 Difference]: Without dead ends: 4252 [2020-10-12 20:01:59,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=602, Invalid=2154, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 20:01:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2020-10-12 20:01:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 2176. [2020-10-12 20:01:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2176 states. [2020-10-12 20:01:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 2808 transitions. [2020-10-12 20:01:59,654 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 2808 transitions. Word has length 69 [2020-10-12 20:01:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:59,655 INFO L479 AbstractCegarLoop]: Abstraction has 2176 states and 2808 transitions. [2020-10-12 20:01:59,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 20:01:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 2808 transitions. [2020-10-12 20:01:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:01:59,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:59,662 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] [2020-10-12 20:01:59,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:01:59,663 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:59,664 INFO L82 PathProgramCache]: Analyzing trace with hash 147624142, now seen corresponding path program 1 times [2020-10-12 20:01:59,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:59,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643326567] [2020-10-12 20:01:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:04,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:04,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:02:04,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:02:04,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:02:04,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:04,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:02:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 20:02:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 20:02:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:02:06,879 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-12 20:02:06,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:06,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 20:02:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:06,981 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 20:02:06,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643326567] [2020-10-12 20:02:06,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:06,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:02:06,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055518265] [2020-10-12 20:02:06,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:02:06,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:06,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:02:06,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:02:06,986 INFO L87 Difference]: Start difference. First operand 2176 states and 2808 transitions. Second operand 11 states. [2020-10-12 20:02:08,846 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 653 [2020-10-12 20:02:23,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:23,386 INFO L93 Difference]: Finished difference Result 4936 states and 6763 transitions. [2020-10-12 20:02:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 20:02:23,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-12 20:02:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:23,408 INFO L225 Difference]: With dead ends: 4936 [2020-10-12 20:02:23,409 INFO L226 Difference]: Without dead ends: 4137 [2020-10-12 20:02:23,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-10-12 20:02:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2020-10-12 20:02:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 2368. [2020-10-12 20:02:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2368 states. [2020-10-12 20:02:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3044 transitions. [2020-10-12 20:02:23,579 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3044 transitions. Word has length 70 [2020-10-12 20:02:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:23,580 INFO L479 AbstractCegarLoop]: Abstraction has 2368 states and 3044 transitions. [2020-10-12 20:02:23,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:02:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3044 transitions. [2020-10-12 20:02:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:02:23,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:23,585 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] [2020-10-12 20:02:23,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:02:23,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:23,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:23,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1546314344, now seen corresponding path program 1 times [2020-10-12 20:02:23,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:23,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211650465] [2020-10-12 20:02:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:23,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:23,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:24,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:24,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:24,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:26,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:28,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:28,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:02:28,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:02:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:02:28,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:02:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:02:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:02:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:30,974 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-12 20:02:30,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:31,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:31,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:31,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 20:02:31,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:02:31,084 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 20:02:31,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211650465] [2020-10-12 20:02:31,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:31,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:02:31,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731212163] [2020-10-12 20:02:31,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:02:31,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:31,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:02:31,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:02:31,087 INFO L87 Difference]: Start difference. First operand 2368 states and 3044 transitions. Second operand 11 states. [2020-10-12 20:02:33,204 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 673 [2020-10-12 20:02:49,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:49,768 INFO L93 Difference]: Finished difference Result 5249 states and 6953 transitions. [2020-10-12 20:02:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:02:49,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-12 20:02:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:49,786 INFO L225 Difference]: With dead ends: 5249 [2020-10-12 20:02:49,787 INFO L226 Difference]: Without dead ends: 3724 [2020-10-12 20:02:49,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:02:49,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2020-10-12 20:02:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 2986. [2020-10-12 20:02:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2986 states. [2020-10-12 20:02:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 3846 transitions. [2020-10-12 20:02:50,072 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 3846 transitions. Word has length 71 [2020-10-12 20:02:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:50,075 INFO L479 AbstractCegarLoop]: Abstraction has 2986 states and 3846 transitions. [2020-10-12 20:02:50,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:02:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 3846 transitions. [2020-10-12 20:02:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 20:02:50,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:50,084 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] [2020-10-12 20:02:50,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:02:50,084 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:50,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1864986880, now seen corresponding path program 1 times [2020-10-12 20:02:50,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:50,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944571361] [2020-10-12 20:02:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:50,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:50,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:50,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:52,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:54,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:55,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:55,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 20:02:55,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:02:55,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:02:55,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:02:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:02:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:02:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:56,072 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2020-10-12 20:02:58,191 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-12 20:02:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:58,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:58,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:58,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:58,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 20:02:58,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:58,302 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 20:02:58,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944571361] [2020-10-12 20:02:58,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:58,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 20:02:58,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019984561] [2020-10-12 20:02:58,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 20:02:58,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:58,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 20:02:58,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:02:58,305 INFO L87 Difference]: Start difference. First operand 2986 states and 3846 transitions. Second operand 15 states. [2020-10-12 20:03:00,441 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 681 [2020-10-12 20:03:00,896 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-12 20:03:01,113 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-12 20:03:01,281 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-12 20:03:01,565 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-10-12 20:03:02,142 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-10-12 20:03:02,541 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-12 20:03:02,822 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-12 20:03:03,184 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-10-12 20:03:03,743 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-10-12 20:03:06,780 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-10-12 20:03:09,513 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-12 20:03:10,445 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-12 20:03:17,002 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-12 20:03:21,689 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-12 20:03:23,852 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-12 20:03:25,272 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-12 20:03:26,477 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-12 20:03:26,852 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-12 20:03:27,121 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-10-12 20:03:28,831 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-12 20:03:30,173 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-10-12 20:03:31,526 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-12 20:03:32,121 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 20:03:33,183 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-12 20:03:33,756 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-12 20:03:34,772 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-12 20:03:37,112 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2020-10-12 20:03:38,764 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2020-10-12 20:03:39,300 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-12 20:03:39,651 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-12 20:03:39,918 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-12 20:03:40,271 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-12 20:03:40,471 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-12 20:03:40,728 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-10-12 20:03:41,528 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-12 20:03:41,961 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-12 20:03:42,708 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2020-10-12 20:03:43,080 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-12 20:03:43,617 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-12 20:03:44,471 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-12 20:03:44,979 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-12 20:03:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:03:47,342 INFO L93 Difference]: Finished difference Result 19516 states and 27676 transitions. [2020-10-12 20:03:47,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-12 20:03:47,344 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-12 20:03:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:03:47,407 INFO L225 Difference]: With dead ends: 19516 [2020-10-12 20:03:47,407 INFO L226 Difference]: Without dead ends: 17158 [2020-10-12 20:03:47,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2613 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=1210, Invalid=6272, Unknown=0, NotChecked=0, Total=7482 [2020-10-12 20:03:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17158 states. [2020-10-12 20:03:48,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17158 to 4295. [2020-10-12 20:03:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2020-10-12 20:03:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 5617 transitions. [2020-10-12 20:03:48,053 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 5617 transitions. Word has length 71 [2020-10-12 20:03:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:03:48,053 INFO L479 AbstractCegarLoop]: Abstraction has 4295 states and 5617 transitions. [2020-10-12 20:03:48,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 20:03:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 5617 transitions. [2020-10-12 20:03:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 20:03:48,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:03:48,061 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] [2020-10-12 20:03:48,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:03:48,062 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:03:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:03:48,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1890800625, now seen corresponding path program 1 times [2020-10-12 20:03:48,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:03:48,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865837932] [2020-10-12 20:03:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:03:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:52,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:53,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:53,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:53,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 20:03:53,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:03:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:03:53,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 20:03:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:03:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:03:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:55,405 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-12 20:03:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:03:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:55,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:55,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:03:55,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:03:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 20:03:55,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:03:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:03:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:03:55,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:03:55,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865837932] [2020-10-12 20:03:55,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:03:55,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 20:03:55,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649989629] [2020-10-12 20:03:55,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 20:03:55,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:03:55,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 20:03:55,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:03:55,507 INFO L87 Difference]: Start difference. First operand 4295 states and 5617 transitions. Second operand 14 states. [2020-10-12 20:03:57,492 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 663 [2020-10-12 20:04:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:04:20,357 INFO L93 Difference]: Finished difference Result 11809 states and 16591 transitions. [2020-10-12 20:04:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 20:04:20,358 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-10-12 20:04:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:04:20,381 INFO L225 Difference]: With dead ends: 11809 [2020-10-12 20:04:20,382 INFO L226 Difference]: Without dead ends: 10575 [2020-10-12 20:04:20,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2020-10-12 20:04:20,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10575 states. [2020-10-12 20:04:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10575 to 6918. [2020-10-12 20:04:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6918 states. [2020-10-12 20:04:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 9185 transitions. [2020-10-12 20:04:21,258 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 9185 transitions. Word has length 72 [2020-10-12 20:04:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:04:21,259 INFO L479 AbstractCegarLoop]: Abstraction has 6918 states and 9185 transitions. [2020-10-12 20:04:21,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 20:04:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 9185 transitions. [2020-10-12 20:04:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-12 20:04:21,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:21,270 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] [2020-10-12 20:04:21,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:04:21,270 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:21,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:21,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1490711639, now seen corresponding path program 1 times [2020-10-12 20:04:21,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:21,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142127483] [2020-10-12 20:04:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:21,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:23,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:23,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:23,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:24,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:26,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:26,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 20:04:26,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:04:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:04:26,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 20:04:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 20:04:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:04:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:28,531 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 652 [2020-10-12 20:04:28,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:04:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:28,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:28,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:28,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:04:28,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:04:28,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:04:28,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:28,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:04:28,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:04:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:04:28,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:28,598 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 20:04:28,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142127483] [2020-10-12 20:04:28,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:04:28,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 20:04:28,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002479785] [2020-10-12 20:04:28,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 20:04:28,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:04:28,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 20:04:28,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:04:28,601 INFO L87 Difference]: Start difference. First operand 6918 states and 9185 transitions. Second operand 14 states. [2020-10-12 20:04:30,603 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 654 [2020-10-12 20:04:32,992 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-12 20:04:33,383 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-12 20:04:34,927 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-12 20:04:36,115 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-12 20:04:37,673 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46