/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:02:31,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:02:31,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:02:31,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:02:31,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:02:31,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:02:31,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:02:31,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:02:31,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:02:31,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:02:31,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:02:31,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:02:31,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:02:31,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:02:31,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:02:31,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:02:31,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:02:31,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:02:31,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:02:31,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:02:31,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:02:31,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:02:31,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:02:31,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:02:31,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:02:31,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:02:31,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:02:31,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:02:31,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:02:32,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:02:32,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:02:32,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:02:32,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:02:32,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:02:32,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:02:32,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:02:32,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:02:32,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:02:32,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:02:32,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:02:32,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:02:32,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:02:32,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:02:32,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:02:32,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:02:32,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:02:32,054 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:02:32,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:02:32,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:02:32,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:02:32,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:02:32,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:02:32,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:02:32,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:02:32,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:02:32,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:02:32,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:02:32,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:02:32,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:02:32,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:02:32,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:02:32,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:02:32,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:02:32,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:02:32,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:02:32,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:02:32,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:02:32,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:02:32,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:02:32,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:02:32,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:02:32,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:02:32,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:02:32,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:02:32,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:02:32,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:02:32,377 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:02:32,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 15:02:32,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b6aff874/52a29a70f23d4b70a541e1ef2cce29a0/FLAG1d9a8479d [2020-10-13 15:02:33,038 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:02:33,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 15:02:33,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b6aff874/52a29a70f23d4b70a541e1ef2cce29a0/FLAG1d9a8479d [2020-10-13 15:02:33,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b6aff874/52a29a70f23d4b70a541e1ef2cce29a0 [2020-10-13 15:02:33,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:02:33,323 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:02:33,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:02:33,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:02:33,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:02:33,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:02:33" (1/1) ... [2020-10-13 15:02:33,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad60208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:33, skipping insertion in model container [2020-10-13 15:02:33,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:02:33" (1/1) ... [2020-10-13 15:02:33,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:02:33,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:02:33,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:02:33,955 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:02:34,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:02:34,236 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:02:34,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34 WrapperNode [2020-10-13 15:02:34,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:02:34,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:02:34,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:02:34,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:02:34,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34" (1/1) ... [2020-10-13 15:02:34,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34" (1/1) ... [2020-10-13 15:02:34,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34" (1/1) ... [2020-10-13 15:02:34,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34" (1/1) ... [2020-10-13 15:02:34,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34" (1/1) ... [2020-10-13 15:02:34,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34" (1/1) ... [2020-10-13 15:02:34,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34" (1/1) ... [2020-10-13 15:02:34,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:02:34,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:02:34,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:02:34,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:02:34,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:02:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:02:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:02:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:02:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:02:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:02:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:02:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:02:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:02:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:02:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:02:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:02:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:02:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:02:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:02:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:02:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:02:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:02:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:02:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:02:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:02:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:02:35,713 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:02:35,714 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:02:35,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:02:35 BoogieIcfgContainer [2020-10-13 15:02:35,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:02:35,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:02:35,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:02:35,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:02:35,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:02:33" (1/3) ... [2020-10-13 15:02:35,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150c67b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:02:35, skipping insertion in model container [2020-10-13 15:02:35,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:02:34" (2/3) ... [2020-10-13 15:02:35,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150c67b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:02:35, skipping insertion in model container [2020-10-13 15:02:35,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:02:35" (3/3) ... [2020-10-13 15:02:35,729 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 15:02:35,740 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:02:35,748 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:02:35,762 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:02:35,789 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:02:35,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:02:35,789 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:02:35,790 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:02:35,790 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:02:35,790 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:02:35,790 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:02:35,790 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:02:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-13 15:02:35,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:02:35,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:35,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:35,834 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:35,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:35,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1511443852, now seen corresponding path program 1 times [2020-10-13 15:02:35,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:35,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149569318] [2020-10-13 15:02:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:37,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:37,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:37,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:41,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:02:41,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:02:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 15:02:41,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:02:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:02:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:02:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:02:42,137 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:02:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:42,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:42,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:42,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:42,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 15:02:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:42,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149569318] [2020-10-13 15:02:42,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:42,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 15:02:42,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556704170] [2020-10-13 15:02:42,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:02:42,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:42,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:02:42,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:02:42,256 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 7 states. [2020-10-13 15:02:42,905 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-13 15:02:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:45,589 INFO L93 Difference]: Finished difference Result 1547 states and 2632 transitions. [2020-10-13 15:02:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 15:02:45,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-13 15:02:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:45,616 INFO L225 Difference]: With dead ends: 1547 [2020-10-13 15:02:45,617 INFO L226 Difference]: Without dead ends: 1365 [2020-10-13 15:02:45,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 15:02:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-10-13 15:02:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 487. [2020-10-13 15:02:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-13 15:02:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 808 transitions. [2020-10-13 15:02:45,732 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 808 transitions. Word has length 122 [2020-10-13 15:02:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:45,733 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 808 transitions. [2020-10-13 15:02:45,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:02:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 808 transitions. [2020-10-13 15:02:45,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:02:45,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:45,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:45,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:02:45,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:45,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:45,744 INFO L82 PathProgramCache]: Analyzing trace with hash -456049120, now seen corresponding path program 1 times [2020-10-13 15:02:45,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:45,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207642655] [2020-10-13 15:02:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:46,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:47,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:50,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:50,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:02:50,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:02:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:02:50,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:02:50,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 15:02:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:02:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:02:51,676 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:02:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:51,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:51,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:51,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 15:02:51,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:51,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:02:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:51,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207642655] [2020-10-13 15:02:51,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:51,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:02:51,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609538120] [2020-10-13 15:02:51,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:02:51,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:51,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:02:51,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:02:51,801 INFO L87 Difference]: Start difference. First operand 487 states and 808 transitions. Second operand 8 states. [2020-10-13 15:02:52,581 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-13 15:02:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:55,930 INFO L93 Difference]: Finished difference Result 3563 states and 5985 transitions. [2020-10-13 15:02:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 15:02:55,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-13 15:02:55,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:55,960 INFO L225 Difference]: With dead ends: 3563 [2020-10-13 15:02:55,960 INFO L226 Difference]: Without dead ends: 3273 [2020-10-13 15:02:55,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-13 15:02:55,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2020-10-13 15:02:56,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 1276. [2020-10-13 15:02:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-13 15:02:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 2137 transitions. [2020-10-13 15:02:56,142 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 2137 transitions. Word has length 123 [2020-10-13 15:02:56,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:56,144 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 2137 transitions. [2020-10-13 15:02:56,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:02:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2137 transitions. [2020-10-13 15:02:56,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:02:56,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:56,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:56,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:02:56,154 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:56,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:56,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1314231085, now seen corresponding path program 1 times [2020-10-13 15:02:56,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:56,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747447877] [2020-10-13 15:02:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:56,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:57,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:01,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:03:01,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:03:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 15:03:01,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 15:03:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:03:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:03:01,720 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:03:01,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:01,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:01,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:01,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:03:01,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:01,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747447877] [2020-10-13 15:03:01,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:01,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:01,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286720982] [2020-10-13 15:03:01,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:01,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:01,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:01,785 INFO L87 Difference]: Start difference. First operand 1276 states and 2137 transitions. Second operand 5 states. [2020-10-13 15:03:02,383 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 15:03:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:04,739 INFO L93 Difference]: Finished difference Result 4239 states and 7132 transitions. [2020-10-13 15:03:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:03:04,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:03:04,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:04,759 INFO L225 Difference]: With dead ends: 4239 [2020-10-13 15:03:04,760 INFO L226 Difference]: Without dead ends: 3266 [2020-10-13 15:03:04,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:03:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2020-10-13 15:03:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2284. [2020-10-13 15:03:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2284 states. [2020-10-13 15:03:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3833 transitions. [2020-10-13 15:03:04,945 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3833 transitions. Word has length 124 [2020-10-13 15:03:04,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:04,946 INFO L479 AbstractCegarLoop]: Abstraction has 2284 states and 3833 transitions. [2020-10-13 15:03:04,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3833 transitions. [2020-10-13 15:03:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:03:04,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:04,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:04,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:03:04,950 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:04,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2143510201, now seen corresponding path program 1 times [2020-10-13 15:03:04,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:04,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67598917] [2020-10-13 15:03:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:05,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:05,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:10,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:03:10,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:03:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 15:03:10,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:10,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 15:03:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:03:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:03:10,583 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:03:10,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:10,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:10,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:10,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67598917] [2020-10-13 15:03:10,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:10,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:10,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623938704] [2020-10-13 15:03:10,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:10,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:10,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:10,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:10,647 INFO L87 Difference]: Start difference. First operand 2284 states and 3833 transitions. Second operand 5 states. [2020-10-13 15:03:11,230 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 15:03:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:13,744 INFO L93 Difference]: Finished difference Result 8119 states and 13658 transitions. [2020-10-13 15:03:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:03:13,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:03:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:13,778 INFO L225 Difference]: With dead ends: 8119 [2020-10-13 15:03:13,779 INFO L226 Difference]: Without dead ends: 6182 [2020-10-13 15:03:13,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:03:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6182 states. [2020-10-13 15:03:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6182 to 4229. [2020-10-13 15:03:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4229 states. [2020-10-13 15:03:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4229 states to 4229 states and 7099 transitions. [2020-10-13 15:03:14,114 INFO L78 Accepts]: Start accepts. Automaton has 4229 states and 7099 transitions. Word has length 125 [2020-10-13 15:03:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:14,115 INFO L479 AbstractCegarLoop]: Abstraction has 4229 states and 7099 transitions. [2020-10-13 15:03:14,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4229 states and 7099 transitions. [2020-10-13 15:03:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:03:14,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:14,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:14,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:03:14,119 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2076800998, now seen corresponding path program 1 times [2020-10-13 15:03:14,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:14,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038346878] [2020-10-13 15:03:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:14,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:14,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:15,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:19,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:19,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 15:03:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:03:19,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:19,612 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:03:19,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:19,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:19,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:19,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:03:19,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:19,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:19,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038346878] [2020-10-13 15:03:19,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:19,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:19,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869317373] [2020-10-13 15:03:19,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:19,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:19,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:19,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:19,668 INFO L87 Difference]: Start difference. First operand 4229 states and 7099 transitions. Second operand 5 states. [2020-10-13 15:03:20,094 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 15:03:22,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:22,355 INFO L93 Difference]: Finished difference Result 15803 states and 26554 transitions. [2020-10-13 15:03:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:03:22,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:03:22,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:22,436 INFO L225 Difference]: With dead ends: 15803 [2020-10-13 15:03:22,437 INFO L226 Difference]: Without dead ends: 11945 [2020-10-13 15:03:22,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:03:22,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11945 states. [2020-10-13 15:03:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11945 to 8057. [2020-10-13 15:03:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8057 states. [2020-10-13 15:03:23,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8057 states to 8057 states and 13511 transitions. [2020-10-13 15:03:23,149 INFO L78 Accepts]: Start accepts. Automaton has 8057 states and 13511 transitions. Word has length 126 [2020-10-13 15:03:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:23,150 INFO L479 AbstractCegarLoop]: Abstraction has 8057 states and 13511 transitions. [2020-10-13 15:03:23,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8057 states and 13511 transitions. [2020-10-13 15:03:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:03:23,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:23,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:23,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:03:23,156 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:23,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:23,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1186186821, now seen corresponding path program 1 times [2020-10-13 15:03:23,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:23,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930443631] [2020-10-13 15:03:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:28,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:03:28,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:03:28,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-13 15:03:28,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:03:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 15:03:28,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:03:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:28,705 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:03:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:28,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:28,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:28,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:03:28,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:28,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930443631] [2020-10-13 15:03:28,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:28,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:03:28,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201140044] [2020-10-13 15:03:28,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:03:28,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:28,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:03:28,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:28,765 INFO L87 Difference]: Start difference. First operand 8057 states and 13511 transitions. Second operand 4 states. [2020-10-13 15:03:29,179 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 15:03:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:32,210 INFO L93 Difference]: Finished difference Result 21916 states and 36742 transitions. [2020-10-13 15:03:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:32,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-13 15:03:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:32,245 INFO L225 Difference]: With dead ends: 21916 [2020-10-13 15:03:32,246 INFO L226 Difference]: Without dead ends: 14078 [2020-10-13 15:03:32,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14078 states. [2020-10-13 15:03:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14078 to 14076. [2020-10-13 15:03:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14076 states. [2020-10-13 15:03:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14076 states to 14076 states and 23526 transitions. [2020-10-13 15:03:33,069 INFO L78 Accepts]: Start accepts. Automaton has 14076 states and 23526 transitions. Word has length 127 [2020-10-13 15:03:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:33,069 INFO L479 AbstractCegarLoop]: Abstraction has 14076 states and 23526 transitions. [2020-10-13 15:03:33,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:03:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 14076 states and 23526 transitions. [2020-10-13 15:03:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:03:33,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:33,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:33,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:03:33,074 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:33,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1459635083, now seen corresponding path program 1 times [2020-10-13 15:03:33,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:33,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696430624] [2020-10-13 15:03:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:33,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:33,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:37,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:37,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:38,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:38,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:03:38,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:03:38,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 15:03:38,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:03:38,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 15:03:38,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:03:38,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:38,695 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:03:38,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:38,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:38,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:38,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:38,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:03:38,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:38,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:38,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696430624] [2020-10-13 15:03:38,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:38,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:03:38,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506754524] [2020-10-13 15:03:38,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:03:38,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:38,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:03:38,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:38,742 INFO L87 Difference]: Start difference. First operand 14076 states and 23526 transitions. Second operand 4 states. [2020-10-13 15:03:39,184 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 15:03:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:42,384 INFO L93 Difference]: Finished difference Result 38222 states and 63824 transitions. [2020-10-13 15:03:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:42,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-13 15:03:42,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:42,451 INFO L225 Difference]: With dead ends: 38222 [2020-10-13 15:03:42,452 INFO L226 Difference]: Without dead ends: 24442 [2020-10-13 15:03:42,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:42,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24442 states. [2020-10-13 15:03:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24442 to 24440. [2020-10-13 15:03:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24440 states. [2020-10-13 15:03:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24440 states to 24440 states and 40662 transitions. [2020-10-13 15:03:43,730 INFO L78 Accepts]: Start accepts. Automaton has 24440 states and 40662 transitions. Word has length 127 [2020-10-13 15:03:43,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:43,731 INFO L479 AbstractCegarLoop]: Abstraction has 24440 states and 40662 transitions. [2020-10-13 15:03:43,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:03:43,731 INFO L276 IsEmpty]: Start isEmpty. Operand 24440 states and 40662 transitions. [2020-10-13 15:03:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:03:43,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:43,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:43,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:03:43,733 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:43,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1319939168, now seen corresponding path program 1 times [2020-10-13 15:03:43,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:43,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211328260] [2020-10-13 15:03:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:49,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:49,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:03:49,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:03:49,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5756 [2020-10-13 15:03:49,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:03:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 15:03:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:03:49,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:49,952 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:03:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:49,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:49,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:49,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:03:49,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:49,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211328260] [2020-10-13 15:03:49,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:49,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:03:49,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486293672] [2020-10-13 15:03:49,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:03:49,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:49,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:03:49,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:49,992 INFO L87 Difference]: Start difference. First operand 24440 states and 40662 transitions. Second operand 4 states. [2020-10-13 15:03:50,452 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 15:03:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:54,163 INFO L93 Difference]: Finished difference Result 66076 states and 109752 transitions. [2020-10-13 15:03:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:54,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-13 15:03:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:54,288 INFO L225 Difference]: With dead ends: 66076 [2020-10-13 15:03:54,288 INFO L226 Difference]: Without dead ends: 41936 [2020-10-13 15:03:54,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41936 states. [2020-10-13 15:03:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41936 to 41864. [2020-10-13 15:03:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41864 states. [2020-10-13 15:03:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41864 states to 41864 states and 69237 transitions. [2020-10-13 15:03:56,413 INFO L78 Accepts]: Start accepts. Automaton has 41864 states and 69237 transitions. Word has length 127 [2020-10-13 15:03:56,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:56,413 INFO L479 AbstractCegarLoop]: Abstraction has 41864 states and 69237 transitions. [2020-10-13 15:03:56,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:03:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 41864 states and 69237 transitions. [2020-10-13 15:03:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:03:56,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:56,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:56,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:03:56,416 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:56,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:56,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2081790590, now seen corresponding path program 1 times [2020-10-13 15:03:56,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:56,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908407607] [2020-10-13 15:03:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:56,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:56,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:00,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:00,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:01,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:01,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:04:01,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:04:01,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:04:01,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:01,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:04:01,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 15:04:01,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:04:01,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:02,131 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:04:02,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:02,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:02,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:02,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:04:02,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:04:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:02,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908407607] [2020-10-13 15:04:02,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:02,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:04:02,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987069157] [2020-10-13 15:04:02,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:04:02,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:02,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:04:02,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:02,191 INFO L87 Difference]: Start difference. First operand 41864 states and 69237 transitions. Second operand 4 states. [2020-10-13 15:04:02,623 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-10-13 15:04:07,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:07,946 INFO L93 Difference]: Finished difference Result 111916 states and 184567 transitions. [2020-10-13 15:04:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:04:07,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-13 15:04:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:08,113 INFO L225 Difference]: With dead ends: 111916 [2020-10-13 15:04:08,113 INFO L226 Difference]: Without dead ends: 70273 [2020-10-13 15:04:08,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:04:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70273 states. [2020-10-13 15:04:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70273 to 70247. [2020-10-13 15:04:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70247 states. [2020-10-13 15:04:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70247 states to 70247 states and 115198 transitions. [2020-10-13 15:04:11,793 INFO L78 Accepts]: Start accepts. Automaton has 70247 states and 115198 transitions. Word has length 127 [2020-10-13 15:04:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:11,794 INFO L479 AbstractCegarLoop]: Abstraction has 70247 states and 115198 transitions. [2020-10-13 15:04:11,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:04:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 70247 states and 115198 transitions. [2020-10-13 15:04:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:04:11,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:11,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:11,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:04:11,796 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:11,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:11,797 INFO L82 PathProgramCache]: Analyzing trace with hash -135595318, now seen corresponding path program 1 times [2020-10-13 15:04:11,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:11,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585671016] [2020-10-13 15:04:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:11,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:11,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:14,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:16,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:16,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:04:16,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:04:16,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4666 [2020-10-13 15:04:16,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:16,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:04:16,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 15:04:16,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:04:16,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:16,934 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:04:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:16,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:16,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:16,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:16,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:04:16,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:16,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585671016] [2020-10-13 15:04:16,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:16,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:04:16,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24088089] [2020-10-13 15:04:16,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:04:16,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:16,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:04:16,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:16,983 INFO L87 Difference]: Start difference. First operand 70247 states and 115198 transitions. Second operand 4 states. [2020-10-13 15:04:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:23,049 INFO L93 Difference]: Finished difference Result 168699 states and 275424 transitions. [2020-10-13 15:04:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:04:23,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-13 15:04:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:23,268 INFO L225 Difference]: With dead ends: 168699 [2020-10-13 15:04:23,268 INFO L226 Difference]: Without dead ends: 98649 [2020-10-13 15:04:23,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98649 states. [2020-10-13 15:04:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98649 to 98647. [2020-10-13 15:04:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98647 states. [2020-10-13 15:04:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98647 states to 98647 states and 158814 transitions. [2020-10-13 15:04:29,876 INFO L78 Accepts]: Start accepts. Automaton has 98647 states and 158814 transitions. Word has length 128 [2020-10-13 15:04:29,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:29,877 INFO L479 AbstractCegarLoop]: Abstraction has 98647 states and 158814 transitions. [2020-10-13 15:04:29,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:04:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 98647 states and 158814 transitions. [2020-10-13 15:04:29,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:04:29,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:29,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:29,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:04:29,879 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:29,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:29,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1149821415, now seen corresponding path program 1 times [2020-10-13 15:04:29,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:29,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063622650] [2020-10-13 15:04:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:31,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:31,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:04:31,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:04:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-10-13 15:04:31,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:04:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 15:04:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 15:04:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:31,666 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:04:31,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:31,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:31,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:31,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:04:31,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:31,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:31,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:31,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:31,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:31,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063622650] [2020-10-13 15:04:31,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:31,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:04:31,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090646777] [2020-10-13 15:04:31,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:04:31,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:31,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:04:31,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:31,708 INFO L87 Difference]: Start difference. First operand 98647 states and 158814 transitions. Second operand 4 states. [2020-10-13 15:04:32,138 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-10-13 15:04:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:40,952 INFO L93 Difference]: Finished difference Result 216681 states and 349314 transitions. [2020-10-13 15:04:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:04:40,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-13 15:04:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:41,225 INFO L225 Difference]: With dead ends: 216681 [2020-10-13 15:04:41,225 INFO L226 Difference]: Without dead ends: 118231 [2020-10-13 15:04:41,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:04:41,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118231 states. [2020-10-13 15:04:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118231 to 118229. [2020-10-13 15:04:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118229 states. [2020-10-13 15:04:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118229 states to 118229 states and 189992 transitions. [2020-10-13 15:04:47,179 INFO L78 Accepts]: Start accepts. Automaton has 118229 states and 189992 transitions. Word has length 129 [2020-10-13 15:04:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:47,179 INFO L479 AbstractCegarLoop]: Abstraction has 118229 states and 189992 transitions. [2020-10-13 15:04:47,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:04:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 118229 states and 189992 transitions. [2020-10-13 15:04:47,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:04:47,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:47,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:47,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:04:47,181 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:47,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:47,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2032425369, now seen corresponding path program 1 times [2020-10-13 15:04:47,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:47,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012622163] [2020-10-13 15:04:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:47,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:47,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:52,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:52,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:04:52,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:04:52,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:04:52,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:04:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:04:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:04:52,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:52,749 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:04:52,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:52,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:52,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:52,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:52,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:04:52,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:52,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:52,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012622163] [2020-10-13 15:04:52,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:52,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 15:04:52,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054778156] [2020-10-13 15:04:52,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:04:52,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:52,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:04:52,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:04:52,818 INFO L87 Difference]: Start difference. First operand 118229 states and 189992 transitions. Second operand 7 states. [2020-10-13 15:04:53,359 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-13 15:05:09,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:09,668 INFO L93 Difference]: Finished difference Result 402453 states and 647248 transitions. [2020-10-13 15:05:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 15:05:09,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-13 15:05:09,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:10,165 INFO L225 Difference]: With dead ends: 402453 [2020-10-13 15:05:10,166 INFO L226 Difference]: Without dead ends: 284423 [2020-10-13 15:05:10,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 15:05:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284423 states. [2020-10-13 15:05:21,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284423 to 118229. [2020-10-13 15:05:21,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118229 states. [2020-10-13 15:05:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118229 states to 118229 states and 189616 transitions. [2020-10-13 15:05:21,254 INFO L78 Accepts]: Start accepts. Automaton has 118229 states and 189616 transitions. Word has length 131 [2020-10-13 15:05:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:21,254 INFO L479 AbstractCegarLoop]: Abstraction has 118229 states and 189616 transitions. [2020-10-13 15:05:21,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:05:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 118229 states and 189616 transitions. [2020-10-13 15:05:21,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 15:05:21,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:21,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:21,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:05:21,256 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:21,256 INFO L82 PathProgramCache]: Analyzing trace with hash -219101815, now seen corresponding path program 1 times [2020-10-13 15:05:21,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:21,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912185780] [2020-10-13 15:05:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:21,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:26,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:26,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 15:05:26,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:05:26,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 15:05:26,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:05:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 15:05:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:05:26,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:26,784 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 15:05:26,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:26,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:26,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:26,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:05:26,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:26,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912185780] [2020-10-13 15:05:26,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:26,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 15:05:26,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286875150] [2020-10-13 15:05:26,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:05:26,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:26,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:05:26,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:05:26,830 INFO L87 Difference]: Start difference. First operand 118229 states and 189616 transitions. Second operand 7 states. [2020-10-13 15:05:27,338 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 274