/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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:11:21,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:11:21,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:11:21,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:11:21,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:11:21,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:11:21,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:11:21,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:11:21,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:11:21,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:11:21,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:11:21,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:11:21,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:11:21,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:11:21,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:11:21,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:11:21,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:11:21,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:11:21,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:11:21,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:11:21,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:11:21,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:11:21,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:11:21,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:11:21,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:11:21,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:11:21,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:11:21,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:11:21,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:11:21,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:11:21,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:11:21,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:11:21,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:11:21,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:11:21,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:11:21,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:11:22,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:11:22,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:11:22,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:11:22,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:11:22,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:11:22,003 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 20:11:22,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:11:22,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:11:22,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:11:22,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:11:22,044 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:11:22,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:11:22,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:11:22,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:11:22,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:11:22,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:11:22,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:11:22,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:11:22,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:11:22,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:11:22,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:11:22,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:11:22,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:11:22,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:11:22,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:11:22,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:11:22,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:11:22,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:11:22,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:11:22,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:11:22,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:11:22,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:11:22,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:11:22,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:11:22,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:11:22,050 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 20:11:22,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:11:22,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:11:22,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:11:22,378 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:11:22,378 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:11:22,379 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:11:22,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ffbaa7f7/0817570b6fb74c1a9e4fb00a7603c4c8/FLAGede8c6509 [2020-10-12 20:11:22,952 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:11:22,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:11:22,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ffbaa7f7/0817570b6fb74c1a9e4fb00a7603c4c8/FLAGede8c6509 [2020-10-12 20:11:23,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ffbaa7f7/0817570b6fb74c1a9e4fb00a7603c4c8 [2020-10-12 20:11:23,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:11:23,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:11:23,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:11:23,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:11:23,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:11:23,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:11:23" (1/1) ... [2020-10-12 20:11:23,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb5ca15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23, skipping insertion in model container [2020-10-12 20:11:23,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:11:23" (1/1) ... [2020-10-12 20:11:23,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:11:23,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:11:23,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:11:23,766 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:11:23,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:11:23,937 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:11:23,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23 WrapperNode [2020-10-12 20:11:23,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:11:23,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:11:23,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:11:23,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:11:23,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23" (1/1) ... [2020-10-12 20:11:23,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23" (1/1) ... [2020-10-12 20:11:23,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23" (1/1) ... [2020-10-12 20:11:23,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23" (1/1) ... [2020-10-12 20:11:23,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23" (1/1) ... [2020-10-12 20:11:24,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23" (1/1) ... [2020-10-12 20:11:24,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23" (1/1) ... [2020-10-12 20:11:24,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:11:24,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:11:24,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:11:24,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:11:24,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23" (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 20:11:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:11:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:11:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:11:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:11:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:11:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:11:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:11:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:11:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:11:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:11:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:11:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:11:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:11:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:11:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:11:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:11:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:11:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:11:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 20:11:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:11:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:11:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:11:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:11:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:11:25,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:11:25,254 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:11:25,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:11:25 BoogieIcfgContainer [2020-10-12 20:11:25,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:11:25,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:11:25,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:11:25,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:11:25,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:11:23" (1/3) ... [2020-10-12 20:11:25,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9d9213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:11:25, skipping insertion in model container [2020-10-12 20:11:25,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:11:23" (2/3) ... [2020-10-12 20:11:25,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9d9213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:11:25, skipping insertion in model container [2020-10-12 20:11:25,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:11:25" (3/3) ... [2020-10-12 20:11:25,268 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:11:25,278 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:11:25,286 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:11:25,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:11:25,324 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:11:25,325 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:11:25,325 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:11:25,325 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:11:25,325 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:11:25,326 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:11:25,326 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:11:25,326 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:11:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states. [2020-10-12 20:11:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 20:11:25,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:25,369 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 20:11:25,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:25,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:25,374 INFO L82 PathProgramCache]: Analyzing trace with hash 575977303, now seen corresponding path program 1 times [2020-10-12 20:11:25,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:25,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17679048] [2020-10-12 20:11:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:25,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:30,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:30,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:11:30,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:11:30,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 20:11:30,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:30,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:11:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:11:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 20:11:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:11:31,512 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:11:31,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:31,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:31,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:31,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:31,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:31,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:11:31,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:11:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:11:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:11:31,723 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 20:11:31,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17679048] [2020-10-12 20:11:31,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:31,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:11:31,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375104820] [2020-10-12 20:11:31,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:11:31,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:31,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:11:31,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:11:31,762 INFO L87 Difference]: Start difference. First operand 263 states. Second operand 9 states. [2020-10-12 20:11:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:35,736 INFO L93 Difference]: Finished difference Result 1168 states and 1921 transitions. [2020-10-12 20:11:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:11:35,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-12 20:11:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:35,771 INFO L225 Difference]: With dead ends: 1168 [2020-10-12 20:11:35,771 INFO L226 Difference]: Without dead ends: 980 [2020-10-12 20:11:35,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:11:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-10-12 20:11:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 970. [2020-10-12 20:11:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-12 20:11:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1481 transitions. [2020-10-12 20:11:35,925 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1481 transitions. Word has length 100 [2020-10-12 20:11:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:11:35,925 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1481 transitions. [2020-10-12 20:11:35,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:11:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1481 transitions. [2020-10-12 20:11:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:11:35,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:35,933 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 20:11:35,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:11:35,934 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:35,934 INFO L82 PathProgramCache]: Analyzing trace with hash 3581804, now seen corresponding path program 1 times [2020-10-12 20:11:35,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:35,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356970360] [2020-10-12 20:11:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:36,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:36,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:38,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:38,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:11:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:11:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2338 [2020-10-12 20:11:38,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:11:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:11:38,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 20:11:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:11:38,623 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:11:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:38,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:38,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:38,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:11:38,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:11:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:11:38,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 20:11:38,743 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 20:11:38,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356970360] [2020-10-12 20:11:38,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:38,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:11:38,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041484156] [2020-10-12 20:11:38,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:11:38,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:38,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:11:38,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:11:38,748 INFO L87 Difference]: Start difference. First operand 970 states and 1481 transitions. Second operand 9 states. [2020-10-12 20:11:39,016 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:11:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:40,490 INFO L93 Difference]: Finished difference Result 3934 states and 6220 transitions. [2020-10-12 20:11:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:11:40,491 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-12 20:11:40,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:40,516 INFO L225 Difference]: With dead ends: 3934 [2020-10-12 20:11:40,516 INFO L226 Difference]: Without dead ends: 3362 [2020-10-12 20:11:40,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:11:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2020-10-12 20:11:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 1670. [2020-10-12 20:11:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2020-10-12 20:11:40,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2591 transitions. [2020-10-12 20:11:40,698 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2591 transitions. Word has length 101 [2020-10-12 20:11:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:11:40,699 INFO L479 AbstractCegarLoop]: Abstraction has 1670 states and 2591 transitions. [2020-10-12 20:11:40,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:11:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2591 transitions. [2020-10-12 20:11:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:11:40,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:40,715 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 20:11:40,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:11:40,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:40,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:40,717 INFO L82 PathProgramCache]: Analyzing trace with hash -231652513, now seen corresponding path program 1 times [2020-10-12 20:11:40,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:40,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472372144] [2020-10-12 20:11:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:40,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:41,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:41,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:11:41,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:11:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-12 20:11:41,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:11:41,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:11:41,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:11:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:11:41,682 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:11:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:41,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:41,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:11:41,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:11:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:11:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:41,745 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 20:11:41,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472372144] [2020-10-12 20:11:41,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:41,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:11:41,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153261641] [2020-10-12 20:11:41,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:11:41,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:41,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:11:41,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:11:41,748 INFO L87 Difference]: Start difference. First operand 1670 states and 2591 transitions. Second operand 6 states. [2020-10-12 20:11:41,970 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:11:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:43,299 INFO L93 Difference]: Finished difference Result 4498 states and 7058 transitions. [2020-10-12 20:11:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:11:43,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:11:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:43,315 INFO L225 Difference]: With dead ends: 4498 [2020-10-12 20:11:43,315 INFO L226 Difference]: Without dead ends: 2922 [2020-10-12 20:11:43,319 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 20:11:43,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-10-12 20:11:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2020-10-12 20:11:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2920 states. [2020-10-12 20:11:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4559 transitions. [2020-10-12 20:11:43,519 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4559 transitions. Word has length 102 [2020-10-12 20:11:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:11:43,520 INFO L479 AbstractCegarLoop]: Abstraction has 2920 states and 4559 transitions. [2020-10-12 20:11:43,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:11:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4559 transitions. [2020-10-12 20:11:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:11:43,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:43,524 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 20:11:43,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:11:43,525 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:43,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:43,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1508533522, now seen corresponding path program 1 times [2020-10-12 20:11:43,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:43,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173939827] [2020-10-12 20:11:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:43,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:44,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:11:44,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:11:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-10-12 20:11:44,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:11:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:11:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 20:11:44,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:44,455 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:11:44,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:44,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:44,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:44,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:44,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:44,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:11:44,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:11:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:11:44,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:44,517 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 20:11:44,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173939827] [2020-10-12 20:11:44,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:44,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:11:44,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942002096] [2020-10-12 20:11:44,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:11:44,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:44,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:11:44,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:11:44,520 INFO L87 Difference]: Start difference. First operand 2920 states and 4559 transitions. Second operand 6 states. [2020-10-12 20:11:44,777 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-12 20:11:46,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:46,208 INFO L93 Difference]: Finished difference Result 8092 states and 12709 transitions. [2020-10-12 20:11:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:11:46,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:11:46,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:46,234 INFO L225 Difference]: With dead ends: 8092 [2020-10-12 20:11:46,235 INFO L226 Difference]: Without dead ends: 5296 [2020-10-12 20:11:46,243 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 20:11:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5296 states. [2020-10-12 20:11:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5296 to 5294. [2020-10-12 20:11:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5294 states. [2020-10-12 20:11:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 8266 transitions. [2020-10-12 20:11:46,582 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 8266 transitions. Word has length 102 [2020-10-12 20:11:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:11:46,583 INFO L479 AbstractCegarLoop]: Abstraction has 5294 states and 8266 transitions. [2020-10-12 20:11:46,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:11:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 8266 transitions. [2020-10-12 20:11:46,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:11:46,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:46,587 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 20:11:46,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:11:46,588 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:46,588 INFO L82 PathProgramCache]: Analyzing trace with hash -492820867, now seen corresponding path program 1 times [2020-10-12 20:11:46,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:46,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606190767] [2020-10-12 20:11:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:46,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:47,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:47,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:11:47,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:11:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-12 20:11:47,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:11:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:11:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 20:11:47,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:47,611 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:11:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:47,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:47,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:47,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:47,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 20:11:47,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:11:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:11:47,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:47,697 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 20:11:47,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606190767] [2020-10-12 20:11:47,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:47,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:11:47,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026758877] [2020-10-12 20:11:47,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:11:47,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:47,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:11:47,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:11:47,701 INFO L87 Difference]: Start difference. First operand 5294 states and 8266 transitions. Second operand 6 states. [2020-10-12 20:11:47,933 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 20:11:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:49,709 INFO L93 Difference]: Finished difference Result 14945 states and 23411 transitions. [2020-10-12 20:11:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:11:49,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:11:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:49,754 INFO L225 Difference]: With dead ends: 14945 [2020-10-12 20:11:49,755 INFO L226 Difference]: Without dead ends: 9812 [2020-10-12 20:11:49,765 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 20:11:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9812 states. [2020-10-12 20:11:50,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9812 to 9810. [2020-10-12 20:11:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9810 states. [2020-10-12 20:11:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9810 states to 9810 states and 15284 transitions. [2020-10-12 20:11:50,440 INFO L78 Accepts]: Start accepts. Automaton has 9810 states and 15284 transitions. Word has length 102 [2020-10-12 20:11:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:11:50,440 INFO L479 AbstractCegarLoop]: Abstraction has 9810 states and 15284 transitions. [2020-10-12 20:11:50,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:11:50,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9810 states and 15284 transitions. [2020-10-12 20:11:50,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:11:50,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:50,445 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 20:11:50,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:11:50,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:50,446 INFO L82 PathProgramCache]: Analyzing trace with hash -2042026484, now seen corresponding path program 1 times [2020-10-12 20:11:50,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:50,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994154982] [2020-10-12 20:11:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:50,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:51,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:51,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:11:51,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:11:51,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-12 20:11:51,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:11:51,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:11:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 20:11:51,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:11:51,362 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:11:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:51,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:51,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:51,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:51,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:11:51,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:11:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:11:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:51,423 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 20:11:51,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994154982] [2020-10-12 20:11:51,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:51,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:11:51,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468148137] [2020-10-12 20:11:51,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:11:51,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:51,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:11:51,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:11:51,426 INFO L87 Difference]: Start difference. First operand 9810 states and 15284 transitions. Second operand 6 states. [2020-10-12 20:11:51,638 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 20:11:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:53,549 INFO L93 Difference]: Finished difference Result 28324 states and 44252 transitions. [2020-10-12 20:11:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:11:53,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:11:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:53,618 INFO L225 Difference]: With dead ends: 28324 [2020-10-12 20:11:53,619 INFO L226 Difference]: Without dead ends: 18716 [2020-10-12 20:11:53,643 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 20:11:53,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18716 states. [2020-10-12 20:11:54,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18716 to 18714. [2020-10-12 20:11:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18714 states. [2020-10-12 20:11:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18714 states to 18714 states and 29118 transitions. [2020-10-12 20:11:55,475 INFO L78 Accepts]: Start accepts. Automaton has 18714 states and 29118 transitions. Word has length 102 [2020-10-12 20:11:55,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:11:55,476 INFO L479 AbstractCegarLoop]: Abstraction has 18714 states and 29118 transitions. [2020-10-12 20:11:55,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:11:55,476 INFO L276 IsEmpty]: Start isEmpty. Operand 18714 states and 29118 transitions. [2020-10-12 20:11:55,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:11:55,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:11:55,482 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 20:11:55,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:11:55,483 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:11:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:11:55,483 INFO L82 PathProgramCache]: Analyzing trace with hash 398122960, now seen corresponding path program 1 times [2020-10-12 20:11:55,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:11:55,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549509417] [2020-10-12 20:11:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:11:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:55,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:11:55,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:11:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-12 20:11:55,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:11:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:11:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:11:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:11:56,188 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:11:56,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:11:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:11:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:11:56,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:11:56,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:11:56,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:11:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:11:56,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:11:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:11:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:11:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:11:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:11:56,238 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 20:11:56,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549509417] [2020-10-12 20:11:56,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:11:56,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:11:56,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902063153] [2020-10-12 20:11:56,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:11:56,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:11:56,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:11:56,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:11:56,240 INFO L87 Difference]: Start difference. First operand 18714 states and 29118 transitions. Second operand 6 states. [2020-10-12 20:11:56,455 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-12 20:11:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:11:59,175 INFO L93 Difference]: Finished difference Result 55415 states and 86183 transitions. [2020-10-12 20:11:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:11:59,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:11:59,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:11:59,259 INFO L225 Difference]: With dead ends: 55415 [2020-10-12 20:11:59,259 INFO L226 Difference]: Without dead ends: 36772 [2020-10-12 20:11:59,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:11:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36772 states. [2020-10-12 20:12:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36772 to 36770. [2020-10-12 20:12:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36770 states. [2020-10-12 20:12:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36770 states to 36770 states and 56823 transitions. [2020-10-12 20:12:01,447 INFO L78 Accepts]: Start accepts. Automaton has 36770 states and 56823 transitions. Word has length 102 [2020-10-12 20:12:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:01,447 INFO L479 AbstractCegarLoop]: Abstraction has 36770 states and 56823 transitions. [2020-10-12 20:12:01,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 36770 states and 56823 transitions. [2020-10-12 20:12:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:12:01,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:01,458 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 20:12:01,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:12:01,458 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:01,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1723478081, now seen corresponding path program 1 times [2020-10-12 20:12:01,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:01,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552194760] [2020-10-12 20:12:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:01,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:01,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:12:01,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:01,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-12 20:12:01,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 20:12:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:12:02,214 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:12:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:02,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:02,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:02,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:02,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:12:02,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:02,267 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 20:12:02,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552194760] [2020-10-12 20:12:02,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:02,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:02,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191483297] [2020-10-12 20:12:02,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:02,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:02,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:02,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:02,274 INFO L87 Difference]: Start difference. First operand 36770 states and 56823 transitions. Second operand 6 states. [2020-10-12 20:12:02,527 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 20:12:09,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:09,009 INFO L93 Difference]: Finished difference Result 109079 states and 168362 transitions. [2020-10-12 20:12:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:12:09,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:12:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:09,176 INFO L225 Difference]: With dead ends: 109079 [2020-10-12 20:12:09,177 INFO L226 Difference]: Without dead ends: 72364 [2020-10-12 20:12:09,252 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 20:12:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72364 states. [2020-10-12 20:12:13,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72364 to 72362. [2020-10-12 20:12:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72362 states. [2020-10-12 20:12:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72362 states to 72362 states and 110891 transitions. [2020-10-12 20:12:13,177 INFO L78 Accepts]: Start accepts. Automaton has 72362 states and 110891 transitions. Word has length 102 [2020-10-12 20:12:13,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:13,177 INFO L479 AbstractCegarLoop]: Abstraction has 72362 states and 110891 transitions. [2020-10-12 20:12:13,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:13,177 INFO L276 IsEmpty]: Start isEmpty. Operand 72362 states and 110891 transitions. [2020-10-12 20:12:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:12:13,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:13,195 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 20:12:13,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:12:13,195 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:13,196 INFO L82 PathProgramCache]: Analyzing trace with hash 323085481, now seen corresponding path program 1 times [2020-10-12 20:12:13,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:13,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99913513] [2020-10-12 20:12:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:13,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:16,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:16,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:12:16,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:12:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2812 [2020-10-12 20:12:16,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:12:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 20:12:16,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:16,387 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:12:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:16,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:16,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:16,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:16,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:12:16,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:16,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:16,465 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 20:12:16,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99913513] [2020-10-12 20:12:16,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:16,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:12:16,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977314596] [2020-10-12 20:12:16,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:12:16,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:16,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:12:16,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:12:16,469 INFO L87 Difference]: Start difference. First operand 72362 states and 110891 transitions. Second operand 11 states. [2020-10-12 20:12:16,775 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 20:12:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:37,240 INFO L93 Difference]: Finished difference Result 314648 states and 478487 transitions. [2020-10-12 20:12:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:12:37,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-12 20:12:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:37,798 INFO L225 Difference]: With dead ends: 314648 [2020-10-12 20:12:37,799 INFO L226 Difference]: Without dead ends: 270202 [2020-10-12 20:12:37,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:12:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270202 states. [2020-10-12 20:12:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270202 to 72787. [2020-10-12 20:12:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72787 states. [2020-10-12 20:12:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72787 states to 72787 states and 111474 transitions. [2020-10-12 20:12:44,929 INFO L78 Accepts]: Start accepts. Automaton has 72787 states and 111474 transitions. Word has length 103 [2020-10-12 20:12:44,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:44,929 INFO L479 AbstractCegarLoop]: Abstraction has 72787 states and 111474 transitions. [2020-10-12 20:12:44,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:12:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 72787 states and 111474 transitions. [2020-10-12 20:12:44,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:12:44,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:44,945 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 20:12:44,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:12:44,945 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1931323127, now seen corresponding path program 1 times [2020-10-12 20:12:44,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:44,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149833181] [2020-10-12 20:12:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:45,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:46,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:46,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:12:46,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:12:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-12 20:12:46,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:12:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 20:12:46,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:46,642 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:12:46,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:46,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:46,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:46,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:46,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:46,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:12:46,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:46,717 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 20:12:46,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149833181] [2020-10-12 20:12:46,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:46,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:12:46,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678730852] [2020-10-12 20:12:46,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:12:46,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:46,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:12:46,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:12:46,720 INFO L87 Difference]: Start difference. First operand 72787 states and 111474 transitions. Second operand 11 states. [2020-10-12 20:12:46,955 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-12 20:13:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:47,248 INFO L93 Difference]: Finished difference Result 722174 states and 1108680 transitions. [2020-10-12 20:13:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 20:13:47,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-12 20:13:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:48,292 INFO L225 Difference]: With dead ends: 722174 [2020-10-12 20:13:48,292 INFO L226 Difference]: Without dead ends: 683679 [2020-10-12 20:13:48,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=444, Invalid=1626, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 20:13:48,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683679 states. [2020-10-12 20:14:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683679 to 73709. [2020-10-12 20:14:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73709 states. [2020-10-12 20:14:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73709 states to 73709 states and 112736 transitions. [2020-10-12 20:14:03,875 INFO L78 Accepts]: Start accepts. Automaton has 73709 states and 112736 transitions. Word has length 103 [2020-10-12 20:14:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:03,875 INFO L479 AbstractCegarLoop]: Abstraction has 73709 states and 112736 transitions. [2020-10-12 20:14:03,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:14:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 73709 states and 112736 transitions. [2020-10-12 20:14:03,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:14:03,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:03,892 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 20:14:03,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:14:03,893 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:03,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:03,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1821471383, now seen corresponding path program 1 times [2020-10-12 20:14:03,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:03,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192697051] [2020-10-12 20:14:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:05,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:05,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:14:05,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:14:05,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-10-12 20:14:05,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:14:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:14:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 20:14:05,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:05,583 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:14:05,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:05,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:05,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:05,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:05,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:14:05,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:14:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:14:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:05,657 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 20:14:05,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192697051] [2020-10-12 20:14:05,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:05,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:14:05,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608919089] [2020-10-12 20:14:05,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:14:05,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:05,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:14:05,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:14:05,659 INFO L87 Difference]: Start difference. First operand 73709 states and 112736 transitions. Second operand 11 states. [2020-10-12 20:14:05,924 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:52,213 INFO L93 Difference]: Finished difference Result 413078 states and 631325 transitions. [2020-10-12 20:14:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 20:14:52,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-12 20:14:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:52,755 INFO L225 Difference]: With dead ends: 413078 [2020-10-12 20:14:52,756 INFO L226 Difference]: Without dead ends: 386772 [2020-10-12 20:14:52,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=308, Invalid=1098, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 20:14:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386772 states. [2020-10-12 20:15:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386772 to 75197. [2020-10-12 20:15:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75197 states. [2020-10-12 20:15:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75197 states to 75197 states and 114854 transitions. [2020-10-12 20:15:03,346 INFO L78 Accepts]: Start accepts. Automaton has 75197 states and 114854 transitions. Word has length 103 [2020-10-12 20:15:03,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:03,346 INFO L479 AbstractCegarLoop]: Abstraction has 75197 states and 114854 transitions. [2020-10-12 20:15:03,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:15:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 75197 states and 114854 transitions. [2020-10-12 20:15:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:15:03,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:03,362 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 20:15:03,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:15:03,362 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1519288777, now seen corresponding path program 1 times [2020-10-12 20:15:03,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:03,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694224602] [2020-10-12 20:15:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:03,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking...