/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:37:33,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:37:33,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:37:33,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:37:33,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:37:33,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:37:33,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:37:33,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:37:33,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:37:33,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:37:33,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:37:33,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:37:33,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:37:33,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:37:33,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:37:33,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:37:33,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:37:33,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:37:33,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:37:33,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:37:33,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:37:33,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:37:33,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:37:33,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:37:33,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:37:33,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:37:33,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:37:33,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:37:33,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:37:33,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:37:33,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:37:33,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:37:33,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:37:33,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:37:33,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:37:33,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:37:33,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:37:33,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:37:33,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:37:33,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:37:33,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:37:33,978 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 [2020-10-14 08:37:34,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:37:34,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:37:34,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:37:34,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:37:34,024 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:37:34,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:37:34,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:37:34,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:37:34,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:37:34,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:37:34,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:37:34,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:37:34,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:37:34,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:37:34,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:37:34,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:37:34,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:37:34,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:37:34,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:37:34,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:37:34,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:37:34,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:37:34,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:37:34,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:37:34,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:37:34,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:37:34,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:37:34,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:37:34,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:37:34,029 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:37:34,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:37:34,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:37:34,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:37:34,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:37:34,380 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:37:34,380 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-14 08:37:34,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81093a203/4a240a45e08343159d8608ce3b10bb7c/FLAG33b55dce7 [2020-10-14 08:37:34,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:37:34,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-14 08:37:34,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81093a203/4a240a45e08343159d8608ce3b10bb7c/FLAG33b55dce7 [2020-10-14 08:37:35,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81093a203/4a240a45e08343159d8608ce3b10bb7c [2020-10-14 08:37:35,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:37:35,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:37:35,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:37:35,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:37:35,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:37:35,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:37:35" (1/1) ... [2020-10-14 08:37:35,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115854be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:35, skipping insertion in model container [2020-10-14 08:37:35,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:37:35" (1/1) ... [2020-10-14 08:37:35,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:37:35,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:37:35,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:37:35,866 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:37:36,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:37:36,042 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:37:36,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36 WrapperNode [2020-10-14 08:37:36,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:37:36,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:37:36,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:37:36,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:37:36,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36" (1/1) ... [2020-10-14 08:37:36,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36" (1/1) ... [2020-10-14 08:37:36,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36" (1/1) ... [2020-10-14 08:37:36,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36" (1/1) ... [2020-10-14 08:37:36,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36" (1/1) ... [2020-10-14 08:37:36,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36" (1/1) ... [2020-10-14 08:37:36,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36" (1/1) ... [2020-10-14 08:37:36,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:37:36,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:37:36,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:37:36,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:37:36,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36" (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 [2020-10-14 08:37:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:37:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:37:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:37:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:37:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:37:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:37:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:37:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:37:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:37:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:37:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:37:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:37:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:37:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:37:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:37:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:37:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:37:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:37:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:37:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:37:37,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:37:37,408 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:37:37,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:37:37 BoogieIcfgContainer [2020-10-14 08:37:37,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:37:37,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:37:37,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:37:37,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:37:37,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:37:35" (1/3) ... [2020-10-14 08:37:37,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b270784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:37:37, skipping insertion in model container [2020-10-14 08:37:37,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:37:36" (2/3) ... [2020-10-14 08:37:37,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b270784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:37:37, skipping insertion in model container [2020-10-14 08:37:37,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:37:37" (3/3) ... [2020-10-14 08:37:37,423 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-14 08:37:37,434 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:37:37,442 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 08:37:37,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 08:37:37,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:37:37,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:37:37,483 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:37:37,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:37:37,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:37:37,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:37:37,484 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:37:37,484 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:37:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-10-14 08:37:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:37:37,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:37,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:37,525 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:37,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1084347770, now seen corresponding path program 1 times [2020-10-14 08:37:37,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:37,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502638570] [2020-10-14 08:37:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:37,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:38,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:42,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:42,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:42,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:37:42,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:37:42,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:37:42,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:42,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:42,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:37:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:37:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:37:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:37:43,189 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:37:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:43,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:43,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:37:43,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:43,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:37:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:37:43,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:43,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502638570] [2020-10-14 08:37:43,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:43,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:37:43,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202310044] [2020-10-14 08:37:43,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:37:43,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:43,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:37:43,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:37:43,266 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 6 states. [2020-10-14 08:37:43,583 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-14 08:37:46,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:46,155 INFO L93 Difference]: Finished difference Result 703 states and 1144 transitions. [2020-10-14 08:37:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:37:46,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 08:37:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:46,191 INFO L225 Difference]: With dead ends: 703 [2020-10-14 08:37:46,192 INFO L226 Difference]: Without dead ends: 616 [2020-10-14 08:37:46,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:37:46,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-10-14 08:37:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 472. [2020-10-14 08:37:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-14 08:37:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 617 transitions. [2020-10-14 08:37:46,291 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 617 transitions. Word has length 52 [2020-10-14 08:37:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:46,292 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 617 transitions. [2020-10-14 08:37:46,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:37:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 617 transitions. [2020-10-14 08:37:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:37:46,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:46,297 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] [2020-10-14 08:37:46,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:37:46,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:46,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:46,298 INFO L82 PathProgramCache]: Analyzing trace with hash 129208709, now seen corresponding path program 1 times [2020-10-14 08:37:46,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:46,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158079832] [2020-10-14 08:37:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:46,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:46,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:46,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:47,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:51,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:51,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:37:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:37:51,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:37:51,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:37:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:37:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:37:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:37:51,786 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:37:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:51,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:51,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:51,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:51,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 08:37:51,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:51,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:37:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:37:51,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:51,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158079832] [2020-10-14 08:37:51,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:51,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:37:51,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969616554] [2020-10-14 08:37:51,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:37:51,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:51,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:37:51,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:37:51,874 INFO L87 Difference]: Start difference. First operand 472 states and 617 transitions. Second operand 6 states. [2020-10-14 08:37:52,128 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 08:37:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:53,157 INFO L93 Difference]: Finished difference Result 932 states and 1268 transitions. [2020-10-14 08:37:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:37:53,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 08:37:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:53,162 INFO L225 Difference]: With dead ends: 932 [2020-10-14 08:37:53,163 INFO L226 Difference]: Without dead ends: 658 [2020-10-14 08:37:53,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:37:53,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-14 08:37:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 631. [2020-10-14 08:37:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-10-14 08:37:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 858 transitions. [2020-10-14 08:37:53,232 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 858 transitions. Word has length 52 [2020-10-14 08:37:53,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:53,233 INFO L479 AbstractCegarLoop]: Abstraction has 631 states and 858 transitions. [2020-10-14 08:37:53,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:37:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 858 transitions. [2020-10-14 08:37:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:37:53,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:53,242 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] [2020-10-14 08:37:53,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:37:53,247 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:53,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:53,248 INFO L82 PathProgramCache]: Analyzing trace with hash -242963161, now seen corresponding path program 1 times [2020-10-14 08:37:53,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:53,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576677470] [2020-10-14 08:37:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:53,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:55,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:58,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:58,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:37:58,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:37:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:37:58,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:58,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:37:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:37:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:37:58,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:58,547 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:37:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:58,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:58,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:58,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:37:58,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:58,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:37:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:37:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:37:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:58,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576677470] [2020-10-14 08:37:58,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:58,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:37:58,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217122511] [2020-10-14 08:37:58,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:37:58,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:58,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:37:58,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:37:58,582 INFO L87 Difference]: Start difference. First operand 631 states and 858 transitions. Second operand 6 states. [2020-10-14 08:37:58,807 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-14 08:38:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:00,359 INFO L93 Difference]: Finished difference Result 854 states and 1161 transitions. [2020-10-14 08:38:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:38:00,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 08:38:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:00,366 INFO L225 Difference]: With dead ends: 854 [2020-10-14 08:38:00,367 INFO L226 Difference]: Without dead ends: 842 [2020-10-14 08:38:00,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:38:00,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-14 08:38:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 629. [2020-10-14 08:38:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-10-14 08:38:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 855 transitions. [2020-10-14 08:38:00,404 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 855 transitions. Word has length 52 [2020-10-14 08:38:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:00,404 INFO L479 AbstractCegarLoop]: Abstraction has 629 states and 855 transitions. [2020-10-14 08:38:00,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:38:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 855 transitions. [2020-10-14 08:38:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:38:00,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:00,406 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] [2020-10-14 08:38:00,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:38:00,407 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:00,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash -943940407, now seen corresponding path program 1 times [2020-10-14 08:38:00,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:00,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618316679] [2020-10-14 08:38:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:00,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:01,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:02,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:04,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:04,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:05,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:38:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:38:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:38:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:05,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:38:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 08:38:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:38:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:05,664 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:38:05,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:05,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:05,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:05,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:38:05,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:05,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:05,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:05,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618316679] [2020-10-14 08:38:05,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:05,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:38:05,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710258796] [2020-10-14 08:38:05,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:38:05,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:05,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:38:05,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:38:05,694 INFO L87 Difference]: Start difference. First operand 629 states and 855 transitions. Second operand 6 states. [2020-10-14 08:38:05,930 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-14 08:38:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:07,108 INFO L93 Difference]: Finished difference Result 2077 states and 3013 transitions. [2020-10-14 08:38:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:38:07,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 08:38:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:07,120 INFO L225 Difference]: With dead ends: 2077 [2020-10-14 08:38:07,120 INFO L226 Difference]: Without dead ends: 1746 [2020-10-14 08:38:07,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:38:07,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-10-14 08:38:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1686. [2020-10-14 08:38:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2020-10-14 08:38:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2445 transitions. [2020-10-14 08:38:07,214 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2445 transitions. Word has length 52 [2020-10-14 08:38:07,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:07,216 INFO L479 AbstractCegarLoop]: Abstraction has 1686 states and 2445 transitions. [2020-10-14 08:38:07,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:38:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2445 transitions. [2020-10-14 08:38:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:38:07,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:07,219 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] [2020-10-14 08:38:07,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:38:07,219 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:07,220 INFO L82 PathProgramCache]: Analyzing trace with hash 605999334, now seen corresponding path program 1 times [2020-10-14 08:38:07,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:07,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051862255] [2020-10-14 08:38:07,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:07,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:12,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:38:12,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:38:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:38:12,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:12,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:38:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 08:38:12,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:12,536 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:38:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:12,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:12,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:12,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:12,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:38:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:12,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:12,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051862255] [2020-10-14 08:38:12,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:12,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:38:12,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116850494] [2020-10-14 08:38:12,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:38:12,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:12,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:38:12,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:38:12,567 INFO L87 Difference]: Start difference. First operand 1686 states and 2445 transitions. Second operand 7 states. [2020-10-14 08:38:12,834 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-14 08:38:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:14,221 INFO L93 Difference]: Finished difference Result 3973 states and 5935 transitions. [2020-10-14 08:38:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:38:14,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-14 08:38:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:14,237 INFO L225 Difference]: With dead ends: 3973 [2020-10-14 08:38:14,237 INFO L226 Difference]: Without dead ends: 3304 [2020-10-14 08:38:14,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:38:14,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2020-10-14 08:38:14,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 1661. [2020-10-14 08:38:14,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1661 states. [2020-10-14 08:38:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2416 transitions. [2020-10-14 08:38:14,342 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2416 transitions. Word has length 54 [2020-10-14 08:38:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:14,343 INFO L479 AbstractCegarLoop]: Abstraction has 1661 states and 2416 transitions. [2020-10-14 08:38:14,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:38:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2416 transitions. [2020-10-14 08:38:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:38:14,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:14,345 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] [2020-10-14 08:38:14,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:38:14,345 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:14,345 INFO L82 PathProgramCache]: Analyzing trace with hash -991437786, now seen corresponding path program 1 times [2020-10-14 08:38:14,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:14,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920149403] [2020-10-14 08:38:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:15,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:15,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:19,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:19,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:38:19,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:38:19,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:38:19,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:19,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:38:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 08:38:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:19,677 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:38:19,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:19,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:19,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:19,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:19,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:38:19,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:19,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:19,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:19,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:19,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920149403] [2020-10-14 08:38:19,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:19,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:38:19,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940462188] [2020-10-14 08:38:19,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:38:19,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:19,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:38:19,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:38:19,734 INFO L87 Difference]: Start difference. First operand 1661 states and 2416 transitions. Second operand 7 states. [2020-10-14 08:38:20,133 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-14 08:38:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:21,489 INFO L93 Difference]: Finished difference Result 3242 states and 4815 transitions. [2020-10-14 08:38:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:38:21,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-14 08:38:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:21,503 INFO L225 Difference]: With dead ends: 3242 [2020-10-14 08:38:21,504 INFO L226 Difference]: Without dead ends: 2567 [2020-10-14 08:38:21,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:38:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2020-10-14 08:38:21,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 1633. [2020-10-14 08:38:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2020-10-14 08:38:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2384 transitions. [2020-10-14 08:38:21,634 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2384 transitions. Word has length 54 [2020-10-14 08:38:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:21,634 INFO L479 AbstractCegarLoop]: Abstraction has 1633 states and 2384 transitions. [2020-10-14 08:38:21,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:38:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2384 transitions. [2020-10-14 08:38:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:38:21,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:21,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:21,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:38:21,638 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:21,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:21,639 INFO L82 PathProgramCache]: Analyzing trace with hash 965656049, now seen corresponding path program 1 times [2020-10-14 08:38:21,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:21,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245884427] [2020-10-14 08:38:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:21,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:23,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:26,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:26,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:38:26,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:38:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:38:26,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:26,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:38:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:38:26,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:26,999 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:38:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:27,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:27,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:27,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:27,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:38:27,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:27,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:27,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:27,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245884427] [2020-10-14 08:38:27,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:27,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:38:27,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155239488] [2020-10-14 08:38:27,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:38:27,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:27,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:38:27,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:38:27,057 INFO L87 Difference]: Start difference. First operand 1633 states and 2384 transitions. Second operand 6 states. [2020-10-14 08:38:27,307 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 08:38:28,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:28,032 INFO L93 Difference]: Finished difference Result 2304 states and 3400 transitions. [2020-10-14 08:38:28,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:38:28,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-14 08:38:28,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:28,041 INFO L225 Difference]: With dead ends: 2304 [2020-10-14 08:38:28,041 INFO L226 Difference]: Without dead ends: 1237 [2020-10-14 08:38:28,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:38:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-10-14 08:38:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 896. [2020-10-14 08:38:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-14 08:38:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1276 transitions. [2020-10-14 08:38:28,094 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1276 transitions. Word has length 54 [2020-10-14 08:38:28,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:28,095 INFO L479 AbstractCegarLoop]: Abstraction has 896 states and 1276 transitions. [2020-10-14 08:38:28,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:38:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1276 transitions. [2020-10-14 08:38:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:38:28,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:28,096 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] [2020-10-14 08:38:28,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:38:28,096 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:28,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:28,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1160822957, now seen corresponding path program 1 times [2020-10-14 08:38:28,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:28,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067085150] [2020-10-14 08:38:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:30,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:31,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:33,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:33,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:38:33,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:38:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:38:33,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:33,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:38:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:38:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:33,574 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:38:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:33,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:33,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:33,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:33,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:33,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:38:33,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:33,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:33,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:33,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067085150] [2020-10-14 08:38:33,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:33,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:33,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084314581] [2020-10-14 08:38:33,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:38:33,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:33,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:38:33,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:38:33,647 INFO L87 Difference]: Start difference. First operand 896 states and 1276 transitions. Second operand 10 states. [2020-10-14 08:38:33,928 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 08:38:35,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:35,324 INFO L93 Difference]: Finished difference Result 2237 states and 3298 transitions. [2020-10-14 08:38:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:38:35,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-14 08:38:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:35,335 INFO L225 Difference]: With dead ends: 2237 [2020-10-14 08:38:35,335 INFO L226 Difference]: Without dead ends: 2231 [2020-10-14 08:38:35,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:38:35,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-10-14 08:38:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 896. [2020-10-14 08:38:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-14 08:38:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1275 transitions. [2020-10-14 08:38:35,416 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1275 transitions. Word has length 54 [2020-10-14 08:38:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:35,418 INFO L479 AbstractCegarLoop]: Abstraction has 896 states and 1275 transitions. [2020-10-14 08:38:35,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:38:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1275 transitions. [2020-10-14 08:38:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:38:35,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:35,419 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] [2020-10-14 08:38:35,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:38:35,420 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:35,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1332085811, now seen corresponding path program 1 times [2020-10-14 08:38:35,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:35,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106772756] [2020-10-14 08:38:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:39,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:39,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:40,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:38:40,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:38:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:38:40,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:40,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:38:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:38:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:40,775 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:38:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:40,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:40,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:40,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:40,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:38:40,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:40,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:40,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:40,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106772756] [2020-10-14 08:38:40,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:40,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:40,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006252534] [2020-10-14 08:38:40,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:38:40,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:40,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:38:40,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:40,810 INFO L87 Difference]: Start difference. First operand 896 states and 1275 transitions. Second operand 9 states. [2020-10-14 08:38:41,047 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 08:38:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:41,996 INFO L93 Difference]: Finished difference Result 1873 states and 2764 transitions. [2020-10-14 08:38:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:38:41,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-14 08:38:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:42,003 INFO L225 Difference]: With dead ends: 1873 [2020-10-14 08:38:42,003 INFO L226 Difference]: Without dead ends: 1229 [2020-10-14 08:38:42,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:38:42,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-10-14 08:38:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 883. [2020-10-14 08:38:42,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-10-14 08:38:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1257 transitions. [2020-10-14 08:38:42,090 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1257 transitions. Word has length 54 [2020-10-14 08:38:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:42,090 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1257 transitions. [2020-10-14 08:38:42,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:38:42,091 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1257 transitions. [2020-10-14 08:38:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:38:42,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:42,092 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] [2020-10-14 08:38:42,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:38:42,092 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:42,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:42,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1572056211, now seen corresponding path program 1 times [2020-10-14 08:38:42,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:42,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91328467] [2020-10-14 08:38:42,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:42,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:43,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:47,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:47,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:38:47,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:38:47,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:38:47,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:47,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:38:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:38:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:47,416 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:38:47,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:47,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:47,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:47,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:38:47,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:47,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:47,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:47,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91328467] [2020-10-14 08:38:47,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:47,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:47,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583741887] [2020-10-14 08:38:47,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:38:47,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:47,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:38:47,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:47,439 INFO L87 Difference]: Start difference. First operand 883 states and 1257 transitions. Second operand 9 states. [2020-10-14 08:38:47,717 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 08:38:49,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:49,286 INFO L93 Difference]: Finished difference Result 4240 states and 6361 transitions. [2020-10-14 08:38:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:38:49,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-14 08:38:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:49,300 INFO L225 Difference]: With dead ends: 4240 [2020-10-14 08:38:49,300 INFO L226 Difference]: Without dead ends: 3582 [2020-10-14 08:38:49,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-14 08:38:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2020-10-14 08:38:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 2111. [2020-10-14 08:38:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2111 states. [2020-10-14 08:38:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3151 transitions. [2020-10-14 08:38:49,498 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3151 transitions. Word has length 54 [2020-10-14 08:38:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:49,499 INFO L479 AbstractCegarLoop]: Abstraction has 2111 states and 3151 transitions. [2020-10-14 08:38:49,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:38:49,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3151 transitions. [2020-10-14 08:38:49,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:38:49,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:49,500 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] [2020-10-14 08:38:49,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:38:49,500 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:49,501 INFO L82 PathProgramCache]: Analyzing trace with hash -828589486, now seen corresponding path program 1 times [2020-10-14 08:38:49,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:49,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754353565] [2020-10-14 08:38:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:54,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:38:54,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:38:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:38:54,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:54,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:38:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:38:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:54,914 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:38:54,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:38:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:54,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:54,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754353565] [2020-10-14 08:38:54,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:54,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:38:54,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946817853] [2020-10-14 08:38:54,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:38:54,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:54,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:38:54,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:54,948 INFO L87 Difference]: Start difference. First operand 2111 states and 3151 transitions. Second operand 9 states. [2020-10-14 08:38:55,310 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-14 08:38:56,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:56,576 INFO L93 Difference]: Finished difference Result 3474 states and 5228 transitions. [2020-10-14 08:38:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:38:56,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 08:38:56,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:56,586 INFO L225 Difference]: With dead ends: 3474 [2020-10-14 08:38:56,587 INFO L226 Difference]: Without dead ends: 2835 [2020-10-14 08:38:56,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:38:56,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2020-10-14 08:38:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1950. [2020-10-14 08:38:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-10-14 08:38:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2901 transitions. [2020-10-14 08:38:56,752 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2901 transitions. Word has length 55 [2020-10-14 08:38:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:56,753 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2901 transitions. [2020-10-14 08:38:56,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:38:56,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2901 transitions. [2020-10-14 08:38:56,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:38:56,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:56,754 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] [2020-10-14 08:38:56,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:38:56,754 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:56,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:56,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1245105311, now seen corresponding path program 1 times [2020-10-14 08:38:56,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:56,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316320546] [2020-10-14 08:38:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:56,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:57,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:57,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:38:57,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 08:38:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-14 08:38:57,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:57,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:38:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:38:57,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 08:38:57,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:38:57,537 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:38:57,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:57,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:57,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:57,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:57,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:38:57,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:57,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:38:57,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:57,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316320546] [2020-10-14 08:38:57,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:57,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:38:57,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137487640] [2020-10-14 08:38:57,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:38:57,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:57,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:38:57,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:38:57,569 INFO L87 Difference]: Start difference. First operand 1950 states and 2901 transitions. Second operand 6 states. [2020-10-14 08:38:57,841 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:38:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:58,552 INFO L93 Difference]: Finished difference Result 2972 states and 4445 transitions. [2020-10-14 08:38:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:38:58,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 08:38:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:58,559 INFO L225 Difference]: With dead ends: 2972 [2020-10-14 08:38:58,559 INFO L226 Difference]: Without dead ends: 1530 [2020-10-14 08:38:58,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:38:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-10-14 08:38:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1197. [2020-10-14 08:38:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-10-14 08:38:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1736 transitions. [2020-10-14 08:38:58,679 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1736 transitions. Word has length 56 [2020-10-14 08:38:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:58,679 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1736 transitions. [2020-10-14 08:38:58,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:38:58,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1736 transitions. [2020-10-14 08:38:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:38:58,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:58,680 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] [2020-10-14 08:38:58,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:38:58,681 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:58,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1558902834, now seen corresponding path program 1 times [2020-10-14 08:38:58,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:58,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994796286] [2020-10-14 08:38:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:01,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:39:01,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:39:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2378 [2020-10-14 08:39:01,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:01,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:39:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:01,354 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:01,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:01,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:01,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:01,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:01,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:39:01,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:01,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:01,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:01,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:01,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:01,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:01,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994796286] [2020-10-14 08:39:01,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:01,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:01,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68525472] [2020-10-14 08:39:01,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:01,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:01,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:01,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:01,378 INFO L87 Difference]: Start difference. First operand 1197 states and 1736 transitions. Second operand 9 states. [2020-10-14 08:39:01,627 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:39:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:02,491 INFO L93 Difference]: Finished difference Result 1695 states and 2485 transitions. [2020-10-14 08:39:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:39:02,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-14 08:39:02,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:02,498 INFO L225 Difference]: With dead ends: 1695 [2020-10-14 08:39:02,499 INFO L226 Difference]: Without dead ends: 1691 [2020-10-14 08:39:02,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:39:02,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-10-14 08:39:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1189. [2020-10-14 08:39:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2020-10-14 08:39:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1726 transitions. [2020-10-14 08:39:02,604 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1726 transitions. Word has length 56 [2020-10-14 08:39:02,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:02,604 INFO L479 AbstractCegarLoop]: Abstraction has 1189 states and 1726 transitions. [2020-10-14 08:39:02,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1726 transitions. [2020-10-14 08:39:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:39:02,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:02,605 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] [2020-10-14 08:39:02,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:39:02,606 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:02,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:02,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1212507662, now seen corresponding path program 1 times [2020-10-14 08:39:02,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:02,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568228822] [2020-10-14 08:39:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:04,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:04,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:39:04,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:39:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1995 [2020-10-14 08:39:04,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:04,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:39:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:04,983 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:04,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:04,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:04,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:04,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:04,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:04,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:05,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568228822] [2020-10-14 08:39:05,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:05,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:05,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654758170] [2020-10-14 08:39:05,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:05,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:05,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:05,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:05,016 INFO L87 Difference]: Start difference. First operand 1189 states and 1726 transitions. Second operand 9 states. [2020-10-14 08:39:05,281 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 08:39:06,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:06,152 INFO L93 Difference]: Finished difference Result 1518 states and 2216 transitions. [2020-10-14 08:39:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:39:06,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-14 08:39:06,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:06,159 INFO L225 Difference]: With dead ends: 1518 [2020-10-14 08:39:06,159 INFO L226 Difference]: Without dead ends: 1507 [2020-10-14 08:39:06,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:39:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-10-14 08:39:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1178. [2020-10-14 08:39:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-10-14 08:39:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1714 transitions. [2020-10-14 08:39:06,248 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1714 transitions. Word has length 56 [2020-10-14 08:39:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:06,248 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1714 transitions. [2020-10-14 08:39:06,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1714 transitions. [2020-10-14 08:39:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:39:06,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:06,249 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] [2020-10-14 08:39:06,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:39:06,249 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:06,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1991796883, now seen corresponding path program 1 times [2020-10-14 08:39:06,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:06,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617436505] [2020-10-14 08:39:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:06,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:07,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:07,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:08,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:08,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:11,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:11,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:39:11,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:39:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:39:11,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:11,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:39:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:39:11,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:11,557 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:11,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:11,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:11,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:11,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:39:11,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:11,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:11,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:11,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617436505] [2020-10-14 08:39:11,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:11,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:11,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791154897] [2020-10-14 08:39:11,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:39:11,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:11,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:39:11,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:11,590 INFO L87 Difference]: Start difference. First operand 1178 states and 1714 transitions. Second operand 10 states. [2020-10-14 08:39:11,877 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-14 08:39:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:12,825 INFO L93 Difference]: Finished difference Result 1708 states and 2494 transitions. [2020-10-14 08:39:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 08:39:12,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-14 08:39:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:12,830 INFO L225 Difference]: With dead ends: 1708 [2020-10-14 08:39:12,830 INFO L226 Difference]: Without dead ends: 1700 [2020-10-14 08:39:12,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-14 08:39:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2020-10-14 08:39:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1178. [2020-10-14 08:39:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-10-14 08:39:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1713 transitions. [2020-10-14 08:39:12,950 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1713 transitions. Word has length 56 [2020-10-14 08:39:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:12,951 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1713 transitions. [2020-10-14 08:39:12,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:39:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1713 transitions. [2020-10-14 08:39:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:39:12,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:12,952 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] [2020-10-14 08:39:12,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:39:12,952 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:12,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:12,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1535296429, now seen corresponding path program 1 times [2020-10-14 08:39:12,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:12,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231006849] [2020-10-14 08:39:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:13,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:14,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:17,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:17,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:39:17,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:39:17,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:39:17,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:17,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:17,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:17,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:17,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:39:17,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:18,233 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:18,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:39:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:18,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231006849] [2020-10-14 08:39:18,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:18,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:18,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979942951] [2020-10-14 08:39:18,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:18,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:18,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:18,261 INFO L87 Difference]: Start difference. First operand 1178 states and 1713 transitions. Second operand 9 states. [2020-10-14 08:39:18,563 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 08:39:20,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:20,314 INFO L93 Difference]: Finished difference Result 3132 states and 4629 transitions. [2020-10-14 08:39:20,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 08:39:20,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-14 08:39:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:20,320 INFO L225 Difference]: With dead ends: 3132 [2020-10-14 08:39:20,320 INFO L226 Difference]: Without dead ends: 3126 [2020-10-14 08:39:20,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:39:20,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2020-10-14 08:39:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 1178. [2020-10-14 08:39:20,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-10-14 08:39:20,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1711 transitions. [2020-10-14 08:39:20,478 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1711 transitions. Word has length 56 [2020-10-14 08:39:20,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:20,478 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1711 transitions. [2020-10-14 08:39:20,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1711 transitions. [2020-10-14 08:39:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 08:39:20,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:20,480 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] [2020-10-14 08:39:20,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:39:20,480 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:20,480 INFO L82 PathProgramCache]: Analyzing trace with hash 83032525, now seen corresponding path program 1 times [2020-10-14 08:39:20,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:20,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553914926] [2020-10-14 08:39:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:20,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:21,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:25,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:25,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 08:39:25,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:39:25,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:39:25,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:25,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:25,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:39:25,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:25,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 08:39:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:25,767 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:25,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:25,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:25,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:25,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:25,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:39:25,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:25,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:25,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:25,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553914926] [2020-10-14 08:39:25,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:25,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:39:25,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662755945] [2020-10-14 08:39:25,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:39:25,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:25,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:39:25,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:39:25,790 INFO L87 Difference]: Start difference. First operand 1178 states and 1711 transitions. Second operand 8 states. [2020-10-14 08:39:26,054 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 08:39:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:26,845 INFO L93 Difference]: Finished difference Result 1708 states and 2490 transitions. [2020-10-14 08:39:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:39:26,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-14 08:39:26,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:26,848 INFO L225 Difference]: With dead ends: 1708 [2020-10-14 08:39:26,848 INFO L226 Difference]: Without dead ends: 1700 [2020-10-14 08:39:26,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:39:26,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2020-10-14 08:39:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1178. [2020-10-14 08:39:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-10-14 08:39:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1710 transitions. [2020-10-14 08:39:26,991 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1710 transitions. Word has length 56 [2020-10-14 08:39:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:26,992 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1710 transitions. [2020-10-14 08:39:26,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:39:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1710 transitions. [2020-10-14 08:39:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:39:26,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:26,993 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] [2020-10-14 08:39:26,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:39:26,993 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:26,994 INFO L82 PathProgramCache]: Analyzing trace with hash -385135822, now seen corresponding path program 1 times [2020-10-14 08:39:26,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:26,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594261122] [2020-10-14 08:39:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:27,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:28,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:28,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:39:28,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:39:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-14 08:39:28,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:28,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:28,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:39:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 08:39:28,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:28,648 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:28,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:28,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:28,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:28,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:28,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:39:28,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:28,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:28,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:28,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594261122] [2020-10-14 08:39:28,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:28,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:28,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999965815] [2020-10-14 08:39:28,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:39:28,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:28,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:39:28,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:28,691 INFO L87 Difference]: Start difference. First operand 1178 states and 1710 transitions. Second operand 10 states. [2020-10-14 08:39:28,979 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 08:39:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:30,065 INFO L93 Difference]: Finished difference Result 3037 states and 4497 transitions. [2020-10-14 08:39:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 08:39:30,066 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-14 08:39:30,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:30,070 INFO L225 Difference]: With dead ends: 3037 [2020-10-14 08:39:30,070 INFO L226 Difference]: Without dead ends: 2027 [2020-10-14 08:39:30,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:39:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-14 08:39:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1178. [2020-10-14 08:39:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-10-14 08:39:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1707 transitions. [2020-10-14 08:39:30,237 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1707 transitions. Word has length 58 [2020-10-14 08:39:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:30,238 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1707 transitions. [2020-10-14 08:39:30,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:39:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1707 transitions. [2020-10-14 08:39:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:39:30,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:30,239 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] [2020-10-14 08:39:30,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:39:30,239 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:30,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2062107314, now seen corresponding path program 1 times [2020-10-14 08:39:30,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:30,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010706262] [2020-10-14 08:39:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:31,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:32,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:35,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:35,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:39:35,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:39:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:39:35,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:35,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:39:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:39:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:35,556 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:35,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:35,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:35,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:35,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:39:35,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:35,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:35,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010706262] [2020-10-14 08:39:35,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:35,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:35,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140764102] [2020-10-14 08:39:35,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:39:35,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:35,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:39:35,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:39:35,589 INFO L87 Difference]: Start difference. First operand 1178 states and 1707 transitions. Second operand 10 states. [2020-10-14 08:39:35,870 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 08:39:36,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:36,908 INFO L93 Difference]: Finished difference Result 1986 states and 2933 transitions. [2020-10-14 08:39:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 08:39:36,908 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-14 08:39:36,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:36,913 INFO L225 Difference]: With dead ends: 1986 [2020-10-14 08:39:36,914 INFO L226 Difference]: Without dead ends: 1971 [2020-10-14 08:39:36,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-14 08:39:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2020-10-14 08:39:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1178. [2020-10-14 08:39:37,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-10-14 08:39:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1706 transitions. [2020-10-14 08:39:37,071 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1706 transitions. Word has length 58 [2020-10-14 08:39:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:37,071 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1706 transitions. [2020-10-14 08:39:37,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:39:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1706 transitions. [2020-10-14 08:39:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:39:37,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:37,072 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] [2020-10-14 08:39:37,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:39:37,073 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:37,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:37,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1124728690, now seen corresponding path program 1 times [2020-10-14 08:39:37,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:37,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856032355] [2020-10-14 08:39:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:38,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:38,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:39:38,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:39:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1594 [2020-10-14 08:39:38,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:38,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:39:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:39:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:38,962 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:38,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:38,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:38,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:38,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:38,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:39:38,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:38,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:38,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:38,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:38,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:39:38,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:38,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856032355] [2020-10-14 08:39:38,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:38,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:39:38,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101484251] [2020-10-14 08:39:38,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:38,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:38,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:38,994 INFO L87 Difference]: Start difference. First operand 1178 states and 1706 transitions. Second operand 9 states. [2020-10-14 08:39:39,269 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-14 08:39:40,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:40,041 INFO L93 Difference]: Finished difference Result 1375 states and 1985 transitions. [2020-10-14 08:39:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:39:40,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-14 08:39:40,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:40,043 INFO L225 Difference]: With dead ends: 1375 [2020-10-14 08:39:40,043 INFO L226 Difference]: Without dead ends: 692 [2020-10-14 08:39:40,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:39:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2020-10-14 08:39:40,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 510. [2020-10-14 08:39:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-14 08:39:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 699 transitions. [2020-10-14 08:39:40,084 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 699 transitions. Word has length 58 [2020-10-14 08:39:40,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:40,084 INFO L479 AbstractCegarLoop]: Abstraction has 510 states and 699 transitions. [2020-10-14 08:39:40,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 699 transitions. [2020-10-14 08:39:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 08:39:40,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:40,085 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] [2020-10-14 08:39:40,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:39:40,085 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:40,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1869694537, now seen corresponding path program 1 times [2020-10-14 08:39:40,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:40,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324313971] [2020-10-14 08:39:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:40,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:41,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:41,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 08:39:41,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-10-14 08:39:41,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:41,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 08:39:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:41,569 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:41,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:41,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:41,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:39:41,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:41,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:41,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324313971] [2020-10-14 08:39:41,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:41,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:41,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847408267] [2020-10-14 08:39:41,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:41,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:41,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:41,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:41,593 INFO L87 Difference]: Start difference. First operand 510 states and 699 transitions. Second operand 9 states. [2020-10-14 08:39:41,857 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-14 08:39:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:42,462 INFO L93 Difference]: Finished difference Result 510 states and 699 transitions. [2020-10-14 08:39:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:39:42,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 08:39:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:42,464 INFO L225 Difference]: With dead ends: 510 [2020-10-14 08:39:42,464 INFO L226 Difference]: Without dead ends: 497 [2020-10-14 08:39:42,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:39:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-14 08:39:42,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2020-10-14 08:39:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-10-14 08:39:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 684 transitions. [2020-10-14 08:39:42,526 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 684 transitions. Word has length 60 [2020-10-14 08:39:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:42,526 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 684 transitions. [2020-10-14 08:39:42,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 684 transitions. [2020-10-14 08:39:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 08:39:42,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:42,528 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] [2020-10-14 08:39:42,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:39:42,528 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:42,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:42,528 INFO L82 PathProgramCache]: Analyzing trace with hash -600118953, now seen corresponding path program 1 times [2020-10-14 08:39:42,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:42,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133048019] [2020-10-14 08:39:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:42,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:42,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:43,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:43,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 08:39:43,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:43,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-14 08:39:43,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:43,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:39:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:39:43,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:43,697 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:43,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:43,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:43,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:43,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:43,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:43,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:39:43,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:43,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:43,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:43,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:43,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:43,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:43,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133048019] [2020-10-14 08:39:43,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:43,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:39:43,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591037866] [2020-10-14 08:39:43,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:39:43,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:43,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:39:43,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:39:43,720 INFO L87 Difference]: Start difference. First operand 497 states and 684 transitions. Second operand 9 states. [2020-10-14 08:39:43,969 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:39:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:44,920 INFO L93 Difference]: Finished difference Result 677 states and 949 transitions. [2020-10-14 08:39:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 08:39:44,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 08:39:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:44,923 INFO L225 Difference]: With dead ends: 677 [2020-10-14 08:39:44,923 INFO L226 Difference]: Without dead ends: 671 [2020-10-14 08:39:44,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:39:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-14 08:39:44,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 491. [2020-10-14 08:39:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-14 08:39:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 675 transitions. [2020-10-14 08:39:44,966 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 675 transitions. Word has length 60 [2020-10-14 08:39:44,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:44,967 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 675 transitions. [2020-10-14 08:39:44,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:39:44,967 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 675 transitions. [2020-10-14 08:39:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 08:39:44,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:44,968 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] [2020-10-14 08:39:44,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:39:44,968 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:44,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1773869257, now seen corresponding path program 1 times [2020-10-14 08:39:44,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:44,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588694345] [2020-10-14 08:39:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:46,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:46,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 08:39:46,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:39:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-10-14 08:39:46,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:46,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:39:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:39:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 08:39:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:46,350 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:46,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:46,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:46,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:46,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:39:46,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:46,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:46,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588694345] [2020-10-14 08:39:46,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:46,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:39:46,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570379230] [2020-10-14 08:39:46,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:39:46,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:46,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:39:46,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:39:46,374 INFO L87 Difference]: Start difference. First operand 491 states and 675 transitions. Second operand 8 states. [2020-10-14 08:39:46,601 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:39:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:47,106 INFO L93 Difference]: Finished difference Result 655 states and 924 transitions. [2020-10-14 08:39:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:39:47,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-14 08:39:47,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:47,108 INFO L225 Difference]: With dead ends: 655 [2020-10-14 08:39:47,108 INFO L226 Difference]: Without dead ends: 635 [2020-10-14 08:39:47,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:39:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-10-14 08:39:47,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 471. [2020-10-14 08:39:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-14 08:39:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 653 transitions. [2020-10-14 08:39:47,148 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 653 transitions. Word has length 60 [2020-10-14 08:39:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:47,149 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 653 transitions. [2020-10-14 08:39:47,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:39:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 653 transitions. [2020-10-14 08:39:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 08:39:47,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:47,151 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] [2020-10-14 08:39:47,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:39:47,151 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:47,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:47,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1517474963, now seen corresponding path program 1 times [2020-10-14 08:39:47,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:47,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476945237] [2020-10-14 08:39:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:47,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 08:39:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:39:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:39:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 08:39:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:39:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:52,393 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:52,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:52,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:39:52,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:52,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:52,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476945237] [2020-10-14 08:39:52,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:52,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:39:52,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543893154] [2020-10-14 08:39:52,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:39:52,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:52,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:39:52,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:39:52,417 INFO L87 Difference]: Start difference. First operand 471 states and 653 transitions. Second operand 4 states. [2020-10-14 08:39:52,638 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 08:39:53,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:53,081 INFO L93 Difference]: Finished difference Result 1083 states and 1575 transitions. [2020-10-14 08:39:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:39:53,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-14 08:39:53,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:53,083 INFO L225 Difference]: With dead ends: 1083 [2020-10-14 08:39:53,083 INFO L226 Difference]: Without dead ends: 761 [2020-10-14 08:39:53,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-10-14 08:39:53,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 759. [2020-10-14 08:39:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-10-14 08:39:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1073 transitions. [2020-10-14 08:39:53,211 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1073 transitions. Word has length 79 [2020-10-14 08:39:53,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:53,212 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 1073 transitions. [2020-10-14 08:39:53,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:39:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1073 transitions. [2020-10-14 08:39:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 08:39:53,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:53,215 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] [2020-10-14 08:39:53,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 08:39:53,215 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:53,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:53,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1719562044, now seen corresponding path program 1 times [2020-10-14 08:39:53,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:53,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171370330] [2020-10-14 08:39:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:53,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:56,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:57,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:58,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:58,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 08:39:58,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:39:58,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:39:58,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:58,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:58,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:39:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 08:39:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 08:39:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:58,486 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:39:58,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:39:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:58,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:58,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:39:58,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:39:58,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:39:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:39:58,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:39:58,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:39:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:39:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:39:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:39:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:39:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:39:58,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171370330] [2020-10-14 08:39:58,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:39:58,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:39:58,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898586088] [2020-10-14 08:39:58,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:39:58,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:39:58,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:39:58,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:39:58,519 INFO L87 Difference]: Start difference. First operand 759 states and 1073 transitions. Second operand 4 states. [2020-10-14 08:39:58,761 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 08:39:59,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:39:59,388 INFO L93 Difference]: Finished difference Result 1915 states and 2787 transitions. [2020-10-14 08:39:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:39:59,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-14 08:39:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:39:59,390 INFO L225 Difference]: With dead ends: 1915 [2020-10-14 08:39:59,390 INFO L226 Difference]: Without dead ends: 1305 [2020-10-14 08:39:59,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:39:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2020-10-14 08:39:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1239. [2020-10-14 08:39:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-10-14 08:39:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1769 transitions. [2020-10-14 08:39:59,566 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1769 transitions. Word has length 81 [2020-10-14 08:39:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:39:59,566 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1769 transitions. [2020-10-14 08:39:59,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:39:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1769 transitions. [2020-10-14 08:39:59,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 08:39:59,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:39:59,568 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] [2020-10-14 08:39:59,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 08:39:59,569 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:39:59,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:39:59,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1347184483, now seen corresponding path program 1 times [2020-10-14 08:39:59,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:39:59,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150709829] [2020-10-14 08:39:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:39:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:39:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:59,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:59,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:39:59,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:00,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:01,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:01,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:02,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:02,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:02,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:04,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:04,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 08:40:04,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:40:04,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:40:04,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:04,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 08:40:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:40:04,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:40:04,860 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:40:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:04,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:04,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:04,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:04,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:40:04,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:04,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:04,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150709829] [2020-10-14 08:40:04,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:04,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:40:04,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794824871] [2020-10-14 08:40:04,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:40:04,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:04,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:40:04,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:04,887 INFO L87 Difference]: Start difference. First operand 1239 states and 1769 transitions. Second operand 4 states. [2020-10-14 08:40:05,121 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 08:40:05,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:05,792 INFO L93 Difference]: Finished difference Result 3291 states and 4763 transitions. [2020-10-14 08:40:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:40:05,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-14 08:40:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:05,795 INFO L225 Difference]: With dead ends: 3291 [2020-10-14 08:40:05,796 INFO L226 Difference]: Without dead ends: 2201 [2020-10-14 08:40:05,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:40:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2020-10-14 08:40:06,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2087. [2020-10-14 08:40:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2020-10-14 08:40:06,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2977 transitions. [2020-10-14 08:40:06,047 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2977 transitions. Word has length 82 [2020-10-14 08:40:06,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:06,048 INFO L479 AbstractCegarLoop]: Abstraction has 2087 states and 2977 transitions. [2020-10-14 08:40:06,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:40:06,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2977 transitions. [2020-10-14 08:40:06,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 08:40:06,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:06,049 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] [2020-10-14 08:40:06,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 08:40:06,049 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:06,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:06,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1026424411, now seen corresponding path program 1 times [2020-10-14 08:40:06,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:06,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759884501] [2020-10-14 08:40:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:06,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:06,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:06,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:06,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:11,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:11,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 08:40:11,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:40:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:40:11,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:11,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 08:40:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:40:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:11,277 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:40:11,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:11,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:11,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:11,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:11,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:40:11,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:11,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:11,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759884501] [2020-10-14 08:40:11,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:11,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:40:11,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569871487] [2020-10-14 08:40:11,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:40:11,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:11,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:40:11,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:11,300 INFO L87 Difference]: Start difference. First operand 2087 states and 2977 transitions. Second operand 4 states. [2020-10-14 08:40:11,519 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-14 08:40:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:12,269 INFO L93 Difference]: Finished difference Result 5091 states and 7291 transitions. [2020-10-14 08:40:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:40:12,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-14 08:40:12,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:12,272 INFO L225 Difference]: With dead ends: 5091 [2020-10-14 08:40:12,272 INFO L226 Difference]: Without dead ends: 3153 [2020-10-14 08:40:12,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:40:12,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2020-10-14 08:40:12,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 3151. [2020-10-14 08:40:12,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3151 states. [2020-10-14 08:40:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 4425 transitions. [2020-10-14 08:40:12,659 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 4425 transitions. Word has length 83 [2020-10-14 08:40:12,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:12,659 INFO L479 AbstractCegarLoop]: Abstraction has 3151 states and 4425 transitions. [2020-10-14 08:40:12,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:40:12,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 4425 transitions. [2020-10-14 08:40:12,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 08:40:12,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:12,661 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] [2020-10-14 08:40:12,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 08:40:12,661 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:12,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1092917923, now seen corresponding path program 1 times [2020-10-14 08:40:12,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:12,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828534455] [2020-10-14 08:40:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:13,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:14,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:17,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:17,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 08:40:17,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:40:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:40:17,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:17,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:17,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:17,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 08:40:17,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 08:40:17,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:17,902 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:40:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:17,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:17,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:17,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:17,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:17,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828534455] [2020-10-14 08:40:17,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:17,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:40:17,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368709128] [2020-10-14 08:40:17,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:40:17,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:17,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:40:17,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:17,927 INFO L87 Difference]: Start difference. First operand 3151 states and 4425 transitions. Second operand 4 states. [2020-10-14 08:40:18,156 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 08:40:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:19,152 INFO L93 Difference]: Finished difference Result 7767 states and 10983 transitions. [2020-10-14 08:40:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:40:19,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-14 08:40:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:19,157 INFO L225 Difference]: With dead ends: 7767 [2020-10-14 08:40:19,157 INFO L226 Difference]: Without dead ends: 4765 [2020-10-14 08:40:19,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:40:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4765 states. [2020-10-14 08:40:19,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4765 to 4763. [2020-10-14 08:40:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4763 states. [2020-10-14 08:40:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 6653 transitions. [2020-10-14 08:40:19,688 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 6653 transitions. Word has length 83 [2020-10-14 08:40:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:19,688 INFO L479 AbstractCegarLoop]: Abstraction has 4763 states and 6653 transitions. [2020-10-14 08:40:19,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:40:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 6653 transitions. [2020-10-14 08:40:19,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 08:40:19,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:19,690 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] [2020-10-14 08:40:19,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 08:40:19,690 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:19,690 INFO L82 PathProgramCache]: Analyzing trace with hash -131985918, now seen corresponding path program 1 times [2020-10-14 08:40:19,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:19,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354831236] [2020-10-14 08:40:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:19,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:19,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:19,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:19,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:20,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:24,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 08:40:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:40:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:40:24,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:24,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:40:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 08:40:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:40:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:24,942 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:40:24,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:24,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:24,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:24,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:24,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:24,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:40:24,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:24,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:24,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:24,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354831236] [2020-10-14 08:40:24,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:24,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:40:24,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266417280] [2020-10-14 08:40:24,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:40:24,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:24,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:40:24,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:40:24,967 INFO L87 Difference]: Start difference. First operand 4763 states and 6653 transitions. Second operand 4 states. [2020-10-14 08:40:25,209 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 08:40:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:26,748 INFO L93 Difference]: Finished difference Result 13415 states and 18631 transitions. [2020-10-14 08:40:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:40:26,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-14 08:40:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:26,756 INFO L225 Difference]: With dead ends: 13415 [2020-10-14 08:40:26,756 INFO L226 Difference]: Without dead ends: 8801 [2020-10-14 08:40:26,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:40:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8801 states. [2020-10-14 08:40:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8801 to 8295. [2020-10-14 08:40:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8295 states. [2020-10-14 08:40:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8295 states to 8295 states and 11345 transitions. [2020-10-14 08:40:27,749 INFO L78 Accepts]: Start accepts. Automaton has 8295 states and 11345 transitions. Word has length 83 [2020-10-14 08:40:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:27,749 INFO L479 AbstractCegarLoop]: Abstraction has 8295 states and 11345 transitions. [2020-10-14 08:40:27,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:40:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand 8295 states and 11345 transitions. [2020-10-14 08:40:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 08:40:27,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:27,750 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] [2020-10-14 08:40:27,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 08:40:27,751 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:27,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:27,751 INFO L82 PathProgramCache]: Analyzing trace with hash -718566478, now seen corresponding path program 1 times [2020-10-14 08:40:27,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:27,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209013389] [2020-10-14 08:40:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:27,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:27,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:30,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:30,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 08:40:30,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:40:30,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2400 [2020-10-14 08:40:30,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:30,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:40:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 08:40:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 08:40:30,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:30,432 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:40:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:30,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:30,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:30,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:30,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:40:30,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:30,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:40:30,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209013389] [2020-10-14 08:40:30,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:40:30,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:40:30,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20804781] [2020-10-14 08:40:30,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:40:30,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:30,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:40:30,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:40:30,456 INFO L87 Difference]: Start difference. First operand 8295 states and 11345 transitions. Second operand 6 states. [2020-10-14 08:40:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:32,798 INFO L93 Difference]: Finished difference Result 13793 states and 18630 transitions. [2020-10-14 08:40:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:40:32,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-14 08:40:32,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:32,811 INFO L225 Difference]: With dead ends: 13793 [2020-10-14 08:40:32,811 INFO L226 Difference]: Without dead ends: 13791 [2020-10-14 08:40:32,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:40:32,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13791 states. [2020-10-14 08:40:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13791 to 8679. [2020-10-14 08:40:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8679 states. [2020-10-14 08:40:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8679 states to 8679 states and 11665 transitions. [2020-10-14 08:40:33,977 INFO L78 Accepts]: Start accepts. Automaton has 8679 states and 11665 transitions. Word has length 85 [2020-10-14 08:40:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:33,978 INFO L479 AbstractCegarLoop]: Abstraction has 8679 states and 11665 transitions. [2020-10-14 08:40:33,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8679 states and 11665 transitions. [2020-10-14 08:40:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:40:33,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:33,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:33,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 08:40:33,983 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:33,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:33,984 INFO L82 PathProgramCache]: Analyzing trace with hash -70703187, now seen corresponding path program 1 times [2020-10-14 08:40:33,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:33,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719336912] [2020-10-14 08:40:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:34,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:35,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:35,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:39,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:39,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:40:39,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:40:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:40:39,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:39,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:40:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:40:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 08:40:39,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:39,259 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:40:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:39,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:39,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:39,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:39,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:40:39,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:39,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 08:40:39,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719336912] [2020-10-14 08:40:39,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:40:39,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:40:39,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537845974] [2020-10-14 08:40:39,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:40:39,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:39,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:40:39,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:40:39,289 INFO L87 Difference]: Start difference. First operand 8679 states and 11665 transitions. Second operand 6 states. [2020-10-14 08:40:39,534 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:40:43,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:43,191 INFO L93 Difference]: Finished difference Result 32065 states and 43094 transitions. [2020-10-14 08:40:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:40:43,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-14 08:40:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:43,213 INFO L225 Difference]: With dead ends: 32065 [2020-10-14 08:40:43,213 INFO L226 Difference]: Without dead ends: 23535 [2020-10-14 08:40:43,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:40:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23535 states. [2020-10-14 08:40:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23535 to 14855. [2020-10-14 08:40:45,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14855 states. [2020-10-14 08:40:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 19889 transitions. [2020-10-14 08:40:45,294 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 19889 transitions. Word has length 106 [2020-10-14 08:40:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:45,294 INFO L479 AbstractCegarLoop]: Abstraction has 14855 states and 19889 transitions. [2020-10-14 08:40:45,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 19889 transitions. [2020-10-14 08:40:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:40:45,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:45,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:45,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 08:40:45,300 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:45,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:45,300 INFO L82 PathProgramCache]: Analyzing trace with hash 543974829, now seen corresponding path program 1 times [2020-10-14 08:40:45,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:45,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854778031] [2020-10-14 08:40:45,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:45,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:46,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:47,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:48,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:50,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:50,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:40:50,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 08:40:50,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:40:50,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:50,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:40:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:40:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 08:40:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:50,596 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:40:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:40:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:50,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:40:50,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:40:50,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:40:50,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:40:50,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:40:50,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:40:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:40:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:40:50,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:40:50,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:40:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 08:40:50,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854778031] [2020-10-14 08:40:50,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:40:50,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:40:50,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146679405] [2020-10-14 08:40:50,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:40:50,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:40:50,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:40:50,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:40:50,641 INFO L87 Difference]: Start difference. First operand 14855 states and 19889 transitions. Second operand 6 states. [2020-10-14 08:40:50,886 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:40:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:40:55,824 INFO L93 Difference]: Finished difference Result 41589 states and 55714 transitions. [2020-10-14 08:40:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:40:55,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-14 08:40:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:40:55,854 INFO L225 Difference]: With dead ends: 41589 [2020-10-14 08:40:55,854 INFO L226 Difference]: Without dead ends: 33059 [2020-10-14 08:40:55,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:40:55,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33059 states. [2020-10-14 08:40:59,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33059 to 23959. [2020-10-14 08:40:59,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23959 states. [2020-10-14 08:40:59,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23959 states to 23959 states and 31969 transitions. [2020-10-14 08:40:59,376 INFO L78 Accepts]: Start accepts. Automaton has 23959 states and 31969 transitions. Word has length 106 [2020-10-14 08:40:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:40:59,377 INFO L479 AbstractCegarLoop]: Abstraction has 23959 states and 31969 transitions. [2020-10-14 08:40:59,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:40:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 23959 states and 31969 transitions. [2020-10-14 08:40:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:40:59,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:40:59,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:40:59,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 08:40:59,381 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:40:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:40:59,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1522490451, now seen corresponding path program 1 times [2020-10-14 08:40:59,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:40:59,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234033784] [2020-10-14 08:40:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:40:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:40:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:40:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:04,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:41:04,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:41:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:41:04,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:04,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:41:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:41:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 08:41:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:04,645 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:41:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:04,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:04,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:04,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:41:04,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:04,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 08:41:04,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234033784] [2020-10-14 08:41:04,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:41:04,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:41:04,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216409073] [2020-10-14 08:41:04,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:41:04,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:04,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:41:04,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:41:04,674 INFO L87 Difference]: Start difference. First operand 23959 states and 31969 transitions. Second operand 6 states. [2020-10-14 08:41:04,922 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-14 08:41:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:41:10,259 INFO L93 Difference]: Finished difference Result 42689 states and 57152 transitions. [2020-10-14 08:41:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:41:10,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-14 08:41:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:41:10,290 INFO L225 Difference]: With dead ends: 42689 [2020-10-14 08:41:10,291 INFO L226 Difference]: Without dead ends: 34159 [2020-10-14 08:41:10,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34159 states. [2020-10-14 08:41:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34159 to 33127. [2020-10-14 08:41:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33127 states. [2020-10-14 08:41:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33127 states to 33127 states and 44305 transitions. [2020-10-14 08:41:15,418 INFO L78 Accepts]: Start accepts. Automaton has 33127 states and 44305 transitions. Word has length 106 [2020-10-14 08:41:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:41:15,419 INFO L479 AbstractCegarLoop]: Abstraction has 33127 states and 44305 transitions. [2020-10-14 08:41:15,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:41:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 33127 states and 44305 transitions. [2020-10-14 08:41:15,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 08:41:15,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:41:15,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:41:15,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 08:41:15,425 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:41:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:41:15,425 INFO L82 PathProgramCache]: Analyzing trace with hash -473520461, now seen corresponding path program 1 times [2020-10-14 08:41:15,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:41:15,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748983312] [2020-10-14 08:41:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:41:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:15,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:15,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:16,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:20,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:20,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 08:41:20,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:41:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:41:20,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:20,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:41:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:41:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 08:41:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:20,795 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:41:20,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:41:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:41:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:41:20,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:41:20,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:41:20,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:41:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:41:20,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:41:20,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:41:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:41:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:41:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:41:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:41:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:41:20,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748983312] [2020-10-14 08:41:20,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:41:20,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 08:41:20,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078903857] [2020-10-14 08:41:20,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:41:20,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:41:20,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:41:20,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:41:20,830 INFO L87 Difference]: Start difference. First operand 33127 states and 44305 transitions. Second operand 9 states. [2020-10-14 08:41:21,110 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193