/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:33:42,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:33:42,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:33:42,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:33:42,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:33:42,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:33:42,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:33:43,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:33:43,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:33:43,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:33:43,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:33:43,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:33:43,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:33:43,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:33:43,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:33:43,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:33:43,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:33:43,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:33:43,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:33:43,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:33:43,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:33:43,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:33:43,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:33:43,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:33:43,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:33:43,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:33:43,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:33:43,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:33:43,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:33:43,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:33:43,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:33:43,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:33:43,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:33:43,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:33:43,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:33:43,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:33:43,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:33:43,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:33:43,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:33:43,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:33:43,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:33:43,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:33:43,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:33:43,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:33:43,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:33:43,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:33:43,089 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:33:43,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:33:43,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:33:43,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:33:43,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:33:43,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:33:43,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:33:43,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:33:43,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:33:43,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:33:43,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:33:43,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:33:43,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:33:43,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:33:43,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:33:43,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:33:43,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:33:43,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:33:43,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:33:43,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:33:43,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:33:43,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:33:43,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:33:43,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:33:43,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:33:43,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:33:43,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:33:43,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:33:43,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:33:43,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:33:43,416 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:33:43,416 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:33:43,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2878c9118/eb59b858f3ef4492b100ca156005d866/FLAGe4de28d78 [2020-10-13 14:33:44,086 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:33:44,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:33:44,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2878c9118/eb59b858f3ef4492b100ca156005d866/FLAGe4de28d78 [2020-10-13 14:33:44,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2878c9118/eb59b858f3ef4492b100ca156005d866 [2020-10-13 14:33:44,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:33:44,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:33:44,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:33:44,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:33:44,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:33:44,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:33:44" (1/1) ... [2020-10-13 14:33:44,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5222b54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:44, skipping insertion in model container [2020-10-13 14:33:44,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:33:44" (1/1) ... [2020-10-13 14:33:44,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:33:44,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:33:45,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:33:45,036 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:33:45,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:33:45,288 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:33:45,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45 WrapperNode [2020-10-13 14:33:45,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:33:45,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:33:45,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:33:45,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:33:45,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45" (1/1) ... [2020-10-13 14:33:45,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45" (1/1) ... [2020-10-13 14:33:45,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45" (1/1) ... [2020-10-13 14:33:45,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45" (1/1) ... [2020-10-13 14:33:45,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45" (1/1) ... [2020-10-13 14:33:45,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45" (1/1) ... [2020-10-13 14:33:45,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45" (1/1) ... [2020-10-13 14:33:45,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:33:45,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:33:45,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:33:45,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:33:45,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:33:45,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:33:45,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:33:45,586 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:33:45,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:33:45,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:33:45,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:33:45,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:33:45,588 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:33:45,588 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:33:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:33:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:33:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:33:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:33:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:33:45,591 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:33:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:33:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:33:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:33:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:33:45,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:33:47,571 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:33:47,571 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:33:47,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:33:47 BoogieIcfgContainer [2020-10-13 14:33:47,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:33:47,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:33:47,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:33:47,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:33:47,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:33:44" (1/3) ... [2020-10-13 14:33:47,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e6b829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:33:47, skipping insertion in model container [2020-10-13 14:33:47,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:33:45" (2/3) ... [2020-10-13 14:33:47,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e6b829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:33:47, skipping insertion in model container [2020-10-13 14:33:47,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:33:47" (3/3) ... [2020-10-13 14:33:47,598 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:33:47,608 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:33:47,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-13 14:33:47,636 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-13 14:33:47,667 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:33:47,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:33:47,668 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:33:47,668 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:33:47,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:33:47,668 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:33:47,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:33:47,669 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:33:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states. [2020-10-13 14:33:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:33:47,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:47,741 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] [2020-10-13 14:33:47,741 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1164125559, now seen corresponding path program 1 times [2020-10-13 14:33:47,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:47,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260085171] [2020-10-13 14:33:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:53,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:53,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:33:53,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:33:53,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:33:53,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:53,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:53,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 14:33:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 14:33:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 14:33:53,774 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:33:53,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:53,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:53,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:53,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:53,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:53,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:33:53,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:53,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260085171] [2020-10-13 14:33:53,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:53,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:33:53,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599472483] [2020-10-13 14:33:53,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:33:53,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:53,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:33:53,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:33:53,865 INFO L87 Difference]: Start difference. First operand 447 states. Second operand 4 states. [2020-10-13 14:33:54,539 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:33:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:57,469 INFO L93 Difference]: Finished difference Result 697 states and 1222 transitions. [2020-10-13 14:33:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:33:57,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-13 14:33:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:57,490 INFO L225 Difference]: With dead ends: 697 [2020-10-13 14:33:57,491 INFO L226 Difference]: Without dead ends: 550 [2020-10-13 14:33:57,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:33:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-13 14:33:57,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 544. [2020-10-13 14:33:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-13 14:33:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 719 transitions. [2020-10-13 14:33:57,576 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 719 transitions. Word has length 54 [2020-10-13 14:33:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:57,577 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 719 transitions. [2020-10-13 14:33:57,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:33:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 719 transitions. [2020-10-13 14:33:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:33:57,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:57,580 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] [2020-10-13 14:33:57,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:33:57,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:57,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:57,581 INFO L82 PathProgramCache]: Analyzing trace with hash -296156292, now seen corresponding path program 1 times [2020-10-13 14:33:57,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:57,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609428357] [2020-10-13 14:33:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:58,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:02,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:02,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:34:02,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:34:02,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 14:34:02,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 14:34:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 14:34:02,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:03,135 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:03,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:03,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:03,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:03,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:34:03,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:03,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:03,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609428357] [2020-10-13 14:34:03,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:03,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:34:03,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968747686] [2020-10-13 14:34:03,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:34:03,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:03,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:34:03,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:03,181 INFO L87 Difference]: Start difference. First operand 544 states and 719 transitions. Second operand 4 states. [2020-10-13 14:34:03,613 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:34:05,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:05,530 INFO L93 Difference]: Finished difference Result 959 states and 1321 transitions. [2020-10-13 14:34:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:34:05,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-13 14:34:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:05,535 INFO L225 Difference]: With dead ends: 959 [2020-10-13 14:34:05,535 INFO L226 Difference]: Without dead ends: 718 [2020-10-13 14:34:05,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:34:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-13 14:34:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 712. [2020-10-13 14:34:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-13 14:34:05,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 957 transitions. [2020-10-13 14:34:05,573 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 957 transitions. Word has length 54 [2020-10-13 14:34:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:05,573 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 957 transitions. [2020-10-13 14:34:05,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:34:05,574 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 957 transitions. [2020-10-13 14:34:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:34:05,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:05,576 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] [2020-10-13 14:34:05,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:34:05,577 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:05,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:05,577 INFO L82 PathProgramCache]: Analyzing trace with hash 408331618, now seen corresponding path program 1 times [2020-10-13 14:34:05,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:05,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944575872] [2020-10-13 14:34:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:05,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:06,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:07,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:08,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:10,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:10,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:34:10,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:34:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:34:10,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:34:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:34:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:34:10,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:34:11,087 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:11,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:11,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:11,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:34:11,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:11,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:11,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944575872] [2020-10-13 14:34:11,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:11,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:34:11,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347917613] [2020-10-13 14:34:11,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:34:11,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:11,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:34:11,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:34:11,130 INFO L87 Difference]: Start difference. First operand 712 states and 957 transitions. Second operand 7 states. [2020-10-13 14:34:11,562 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:34:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:14,214 INFO L93 Difference]: Finished difference Result 3334 states and 4806 transitions. [2020-10-13 14:34:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:34:14,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-13 14:34:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:14,230 INFO L225 Difference]: With dead ends: 3334 [2020-10-13 14:34:14,231 INFO L226 Difference]: Without dead ends: 2783 [2020-10-13 14:34:14,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:34:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2020-10-13 14:34:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2101. [2020-10-13 14:34:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-10-13 14:34:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2986 transitions. [2020-10-13 14:34:14,366 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2986 transitions. Word has length 54 [2020-10-13 14:34:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:14,368 INFO L479 AbstractCegarLoop]: Abstraction has 2101 states and 2986 transitions. [2020-10-13 14:34:14,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:34:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2986 transitions. [2020-10-13 14:34:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 14:34:14,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:14,376 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] [2020-10-13 14:34:14,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:34:14,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash 514372549, now seen corresponding path program 1 times [2020-10-13 14:34:14,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:14,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905095824] [2020-10-13 14:34:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:14,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:15,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:19,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 14:34:19,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:34:19,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:34:19,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 14:34:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:34:19,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:19,820 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:19,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:19,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:19,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:34:19,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:19,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:19,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:19,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:19,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905095824] [2020-10-13 14:34:19,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:19,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:34:19,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016574669] [2020-10-13 14:34:19,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:34:19,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:19,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:34:19,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:19,864 INFO L87 Difference]: Start difference. First operand 2101 states and 2986 transitions. Second operand 4 states. [2020-10-13 14:34:20,249 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:34:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:22,230 INFO L93 Difference]: Finished difference Result 5159 states and 7402 transitions. [2020-10-13 14:34:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:34:22,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-13 14:34:22,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:22,252 INFO L225 Difference]: With dead ends: 5159 [2020-10-13 14:34:22,252 INFO L226 Difference]: Without dead ends: 3504 [2020-10-13 14:34:22,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:34:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2020-10-13 14:34:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 3465. [2020-10-13 14:34:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3465 states. [2020-10-13 14:34:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 4894 transitions. [2020-10-13 14:34:22,460 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 4894 transitions. Word has length 54 [2020-10-13 14:34:22,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:22,460 INFO L479 AbstractCegarLoop]: Abstraction has 3465 states and 4894 transitions. [2020-10-13 14:34:22,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:34:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 4894 transitions. [2020-10-13 14:34:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:34:22,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:22,466 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] [2020-10-13 14:34:22,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:34:22,467 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:22,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:22,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1827822273, now seen corresponding path program 1 times [2020-10-13 14:34:22,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:22,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422039477] [2020-10-13 14:34:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:27,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:34:27,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:34:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:34:27,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:34:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:34:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:34:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:27,963 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:27,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:27,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:27,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:27,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:34:27,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:27,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:27,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:27,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422039477] [2020-10-13 14:34:27,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:27,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:34:27,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333919719] [2020-10-13 14:34:27,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:34:27,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:27,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:34:27,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:34:27,998 INFO L87 Difference]: Start difference. First operand 3465 states and 4894 transitions. Second operand 6 states. [2020-10-13 14:34:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:30,173 INFO L93 Difference]: Finished difference Result 13515 states and 19454 transitions. [2020-10-13 14:34:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:34:30,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 14:34:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:30,236 INFO L225 Difference]: With dead ends: 13515 [2020-10-13 14:34:30,236 INFO L226 Difference]: Without dead ends: 11112 [2020-10-13 14:34:30,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:34:30,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11112 states. [2020-10-13 14:34:30,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11112 to 3486. [2020-10-13 14:34:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3486 states. [2020-10-13 14:34:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4871 transitions. [2020-10-13 14:34:30,517 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4871 transitions. Word has length 55 [2020-10-13 14:34:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:30,518 INFO L479 AbstractCegarLoop]: Abstraction has 3486 states and 4871 transitions. [2020-10-13 14:34:30,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:34:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4871 transitions. [2020-10-13 14:34:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:34:30,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:30,523 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] [2020-10-13 14:34:30,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:34:30,523 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:30,524 INFO L82 PathProgramCache]: Analyzing trace with hash -375967128, now seen corresponding path program 1 times [2020-10-13 14:34:30,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:30,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688933732] [2020-10-13 14:34:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:30,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:30,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:31,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:31,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:32,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:34,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:35,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:34:35,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:34:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:34:35,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:34:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:34:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 14:34:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:36,049 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:36,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:36,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:36,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:34:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:36,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688933732] [2020-10-13 14:34:36,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:36,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:34:36,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100827885] [2020-10-13 14:34:36,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:34:36,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:36,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:34:36,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:34:36,086 INFO L87 Difference]: Start difference. First operand 3486 states and 4871 transitions. Second operand 9 states. [2020-10-13 14:34:36,496 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-13 14:34:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:40,056 INFO L93 Difference]: Finished difference Result 12637 states and 18117 transitions. [2020-10-13 14:34:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:34:40,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-13 14:34:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:40,106 INFO L225 Difference]: With dead ends: 12637 [2020-10-13 14:34:40,106 INFO L226 Difference]: Without dead ends: 10414 [2020-10-13 14:34:40,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:34:40,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10414 states. [2020-10-13 14:34:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10414 to 3447. [2020-10-13 14:34:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3447 states. [2020-10-13 14:34:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4802 transitions. [2020-10-13 14:34:40,375 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4802 transitions. Word has length 55 [2020-10-13 14:34:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:40,375 INFO L479 AbstractCegarLoop]: Abstraction has 3447 states and 4802 transitions. [2020-10-13 14:34:40,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:34:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4802 transitions. [2020-10-13 14:34:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:34:40,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:40,379 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] [2020-10-13 14:34:40,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:34:40,379 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:40,379 INFO L82 PathProgramCache]: Analyzing trace with hash 248470396, now seen corresponding path program 1 times [2020-10-13 14:34:40,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:40,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527184793] [2020-10-13 14:34:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:42,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:43,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:45,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:45,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:34:45,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:34:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:34:45,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:34:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:34:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:34:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:45,837 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:45,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:45,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:45,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:45,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:45,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:34:45,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:45,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:45,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527184793] [2020-10-13 14:34:45,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:45,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:34:45,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433198383] [2020-10-13 14:34:45,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:34:45,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:45,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:34:45,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:34:45,866 INFO L87 Difference]: Start difference. First operand 3447 states and 4802 transitions. Second operand 6 states. [2020-10-13 14:34:47,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:47,711 INFO L93 Difference]: Finished difference Result 10531 states and 14892 transitions. [2020-10-13 14:34:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:34:47,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 14:34:47,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:47,731 INFO L225 Difference]: With dead ends: 10531 [2020-10-13 14:34:47,731 INFO L226 Difference]: Without dead ends: 9027 [2020-10-13 14:34:47,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:34:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9027 states. [2020-10-13 14:34:47,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9027 to 3308. [2020-10-13 14:34:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3308 states. [2020-10-13 14:34:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 4616 transitions. [2020-10-13 14:34:47,996 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 4616 transitions. Word has length 55 [2020-10-13 14:34:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:47,997 INFO L479 AbstractCegarLoop]: Abstraction has 3308 states and 4616 transitions. [2020-10-13 14:34:47,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:34:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 4616 transitions. [2020-10-13 14:34:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:34:48,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:48,001 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] [2020-10-13 14:34:48,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:34:48,001 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:48,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2090148555, now seen corresponding path program 1 times [2020-10-13 14:34:48,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:48,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844755438] [2020-10-13 14:34:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:48,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:48,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:50,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:51,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:52,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:53,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:53,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:34:53,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:34:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:34:53,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:34:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:34:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:34:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:53,437 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:53,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:53,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:53,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:53,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:34:53,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:53,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844755438] [2020-10-13 14:34:53,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:53,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:34:53,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340629749] [2020-10-13 14:34:53,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:34:53,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:53,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:34:53,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:34:53,470 INFO L87 Difference]: Start difference. First operand 3308 states and 4616 transitions. Second operand 6 states. [2020-10-13 14:34:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:55,732 INFO L93 Difference]: Finished difference Result 11758 states and 16796 transitions. [2020-10-13 14:34:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:34:55,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 14:34:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:55,754 INFO L225 Difference]: With dead ends: 11758 [2020-10-13 14:34:55,754 INFO L226 Difference]: Without dead ends: 9635 [2020-10-13 14:34:55,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:34:55,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9635 states. [2020-10-13 14:34:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9635 to 3297. [2020-10-13 14:34:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3297 states. [2020-10-13 14:34:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 4567 transitions. [2020-10-13 14:34:56,062 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 4567 transitions. Word has length 56 [2020-10-13 14:34:56,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:56,062 INFO L479 AbstractCegarLoop]: Abstraction has 3297 states and 4567 transitions. [2020-10-13 14:34:56,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:34:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 4567 transitions. [2020-10-13 14:34:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:34:56,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:56,067 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] [2020-10-13 14:34:56,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:34:56,068 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:56,068 INFO L82 PathProgramCache]: Analyzing trace with hash -454662552, now seen corresponding path program 1 times [2020-10-13 14:34:56,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:56,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086120586] [2020-10-13 14:34:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:56,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:01,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:01,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:35:01,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:35:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:35:01,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:35:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:35:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:35:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:01,569 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:01,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:01,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:01,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:01,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:01,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:35:01,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:01,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086120586] [2020-10-13 14:35:01,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:01,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:35:01,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464578575] [2020-10-13 14:35:01,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:35:01,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:01,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:35:01,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:35:01,606 INFO L87 Difference]: Start difference. First operand 3297 states and 4567 transitions. Second operand 9 states. [2020-10-13 14:35:02,021 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:35:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:04,310 INFO L93 Difference]: Finished difference Result 13032 states and 18372 transitions. [2020-10-13 14:35:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:35:04,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-13 14:35:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:04,336 INFO L225 Difference]: With dead ends: 13032 [2020-10-13 14:35:04,336 INFO L226 Difference]: Without dead ends: 10736 [2020-10-13 14:35:04,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:35:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10736 states. [2020-10-13 14:35:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10736 to 3325. [2020-10-13 14:35:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3325 states. [2020-10-13 14:35:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4599 transitions. [2020-10-13 14:35:04,765 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4599 transitions. Word has length 56 [2020-10-13 14:35:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:04,766 INFO L479 AbstractCegarLoop]: Abstraction has 3325 states and 4599 transitions. [2020-10-13 14:35:04,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:35:04,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4599 transitions. [2020-10-13 14:35:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:35:04,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:04,769 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] [2020-10-13 14:35:04,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:35:04,769 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:04,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:04,770 INFO L82 PathProgramCache]: Analyzing trace with hash -640753869, now seen corresponding path program 1 times [2020-10-13 14:35:04,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:04,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233489628] [2020-10-13 14:35:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:04,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:06,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:06,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:09,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:09,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:09,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:35:09,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:35:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:35:09,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:35:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:35:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:35:09,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:10,209 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:10,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:10,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:10,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:35:10,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:10,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:10,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233489628] [2020-10-13 14:35:10,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:10,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:35:10,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586081912] [2020-10-13 14:35:10,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:35:10,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:10,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:35:10,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:35:10,235 INFO L87 Difference]: Start difference. First operand 3325 states and 4599 transitions. Second operand 7 states. [2020-10-13 14:35:10,666 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:35:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:13,540 INFO L93 Difference]: Finished difference Result 15590 states and 22262 transitions. [2020-10-13 14:35:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:35:13,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-13 14:35:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:13,565 INFO L225 Difference]: With dead ends: 15590 [2020-10-13 14:35:13,565 INFO L226 Difference]: Without dead ends: 13043 [2020-10-13 14:35:13,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:35:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13043 states. [2020-10-13 14:35:14,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13043 to 6987. [2020-10-13 14:35:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6987 states. [2020-10-13 14:35:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 9854 transitions. [2020-10-13 14:35:14,276 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 9854 transitions. Word has length 56 [2020-10-13 14:35:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:14,277 INFO L479 AbstractCegarLoop]: Abstraction has 6987 states and 9854 transitions. [2020-10-13 14:35:14,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:35:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 9854 transitions. [2020-10-13 14:35:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:35:14,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:14,280 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] [2020-10-13 14:35:14,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:35:14,281 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:14,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1628228644, now seen corresponding path program 1 times [2020-10-13 14:35:14,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:14,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398363380] [2020-10-13 14:35:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:14,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:19,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:19,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:35:19,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:35:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:35:19,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:35:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:35:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:35:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:19,723 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:19,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:19,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:19,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:19,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:19,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:35:19,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:19,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:19,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398363380] [2020-10-13 14:35:19,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:19,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:35:19,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464543546] [2020-10-13 14:35:19,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:35:19,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:19,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:35:19,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:35:19,748 INFO L87 Difference]: Start difference. First operand 6987 states and 9854 transitions. Second operand 7 states. [2020-10-13 14:35:20,182 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:35:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:23,254 INFO L93 Difference]: Finished difference Result 21694 states and 31042 transitions. [2020-10-13 14:35:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:35:23,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-13 14:35:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:23,283 INFO L225 Difference]: With dead ends: 21694 [2020-10-13 14:35:23,283 INFO L226 Difference]: Without dead ends: 16336 [2020-10-13 14:35:23,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:35:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16336 states. [2020-10-13 14:35:24,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16336 to 10270. [2020-10-13 14:35:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10270 states. [2020-10-13 14:35:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10270 states to 10270 states and 14617 transitions. [2020-10-13 14:35:24,347 INFO L78 Accepts]: Start accepts. Automaton has 10270 states and 14617 transitions. Word has length 56 [2020-10-13 14:35:24,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:24,347 INFO L479 AbstractCegarLoop]: Abstraction has 10270 states and 14617 transitions. [2020-10-13 14:35:24,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:35:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 10270 states and 14617 transitions. [2020-10-13 14:35:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:35:24,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:24,352 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] [2020-10-13 14:35:24,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:35:24,353 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:24,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:24,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1371443219, now seen corresponding path program 1 times [2020-10-13 14:35:24,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:24,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209999213] [2020-10-13 14:35:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:24,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:28,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:29,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:29,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:35:29,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:35:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:35:29,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:35:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:35:29,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:35:29,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:29,784 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:29,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:29,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:29,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:29,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:35:29,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:29,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:29,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:29,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:35:29,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:29,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209999213] [2020-10-13 14:35:29,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:29,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:35:29,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356745022] [2020-10-13 14:35:29,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:35:29,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:29,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:35:29,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:35:29,826 INFO L87 Difference]: Start difference. First operand 10270 states and 14617 transitions. Second operand 6 states. [2020-10-13 14:35:30,334 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-13 14:35:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:32,322 INFO L93 Difference]: Finished difference Result 19154 states and 27382 transitions. [2020-10-13 14:35:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:35:32,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:35:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:32,338 INFO L225 Difference]: With dead ends: 19154 [2020-10-13 14:35:32,338 INFO L226 Difference]: Without dead ends: 11502 [2020-10-13 14:35:32,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:35:32,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11502 states. [2020-10-13 14:35:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11502 to 9776. [2020-10-13 14:35:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9776 states. [2020-10-13 14:35:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9776 states to 9776 states and 13833 transitions. [2020-10-13 14:35:33,130 INFO L78 Accepts]: Start accepts. Automaton has 9776 states and 13833 transitions. Word has length 57 [2020-10-13 14:35:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:33,130 INFO L479 AbstractCegarLoop]: Abstraction has 9776 states and 13833 transitions. [2020-10-13 14:35:33,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:35:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 9776 states and 13833 transitions. [2020-10-13 14:35:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:35:33,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:33,135 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] [2020-10-13 14:35:33,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:35:33,135 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash 13729784, now seen corresponding path program 1 times [2020-10-13 14:35:33,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:33,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183385] [2020-10-13 14:35:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:33,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:38,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:35:38,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:35:38,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:35:38,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:35:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:35:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:35:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:38,570 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:38,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:38,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:38,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:35:38,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:38,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183385] [2020-10-13 14:35:38,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:38,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:35:38,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82886518] [2020-10-13 14:35:38,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:35:38,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:38,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:35:38,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:35:38,596 INFO L87 Difference]: Start difference. First operand 9776 states and 13833 transitions. Second operand 6 states. [2020-10-13 14:35:38,997 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-13 14:35:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:43,992 INFO L93 Difference]: Finished difference Result 40220 states and 57860 transitions. [2020-10-13 14:35:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:35:43,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:35:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:44,025 INFO L225 Difference]: With dead ends: 40220 [2020-10-13 14:35:44,025 INFO L226 Difference]: Without dead ends: 34534 [2020-10-13 14:35:44,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:35:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34534 states. [2020-10-13 14:35:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34534 to 7880. [2020-10-13 14:35:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7880 states. [2020-10-13 14:35:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7880 states to 7880 states and 11093 transitions. [2020-10-13 14:35:44,870 INFO L78 Accepts]: Start accepts. Automaton has 7880 states and 11093 transitions. Word has length 57 [2020-10-13 14:35:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:44,870 INFO L479 AbstractCegarLoop]: Abstraction has 7880 states and 11093 transitions. [2020-10-13 14:35:44,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:35:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 7880 states and 11093 transitions. [2020-10-13 14:35:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:35:44,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:44,873 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] [2020-10-13 14:35:44,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:35:44,873 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:44,874 INFO L82 PathProgramCache]: Analyzing trace with hash -172361533, now seen corresponding path program 1 times [2020-10-13 14:35:44,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:44,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999215439] [2020-10-13 14:35:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:44,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:44,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:45,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:45,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:45,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:45,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:46,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:47,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:48,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:49,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:35:49,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:35:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:35:49,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:35:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:35:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:35:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:50,317 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:50,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:50,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:50,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:50,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:50,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 14:35:50,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:35:50,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:50,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999215439] [2020-10-13 14:35:50,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:50,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:35:50,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538346196] [2020-10-13 14:35:50,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:35:50,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:50,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:35:50,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:35:50,366 INFO L87 Difference]: Start difference. First operand 7880 states and 11093 transitions. Second operand 6 states. [2020-10-13 14:35:50,801 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-13 14:35:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:52,340 INFO L93 Difference]: Finished difference Result 7914 states and 11122 transitions. [2020-10-13 14:35:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:35:52,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:35:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:52,345 INFO L225 Difference]: With dead ends: 7914 [2020-10-13 14:35:52,345 INFO L226 Difference]: Without dead ends: 4509 [2020-10-13 14:35:52,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:35:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2020-10-13 14:35:52,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4487. [2020-10-13 14:35:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4487 states. [2020-10-13 14:35:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 6275 transitions. [2020-10-13 14:35:52,754 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 6275 transitions. Word has length 57 [2020-10-13 14:35:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:52,754 INFO L479 AbstractCegarLoop]: Abstraction has 4487 states and 6275 transitions. [2020-10-13 14:35:52,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:35:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 6275 transitions. [2020-10-13 14:35:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:35:52,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:52,756 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] [2020-10-13 14:35:52,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:35:52,756 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:52,756 INFO L82 PathProgramCache]: Analyzing trace with hash 455413625, now seen corresponding path program 1 times [2020-10-13 14:35:52,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:52,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71188112] [2020-10-13 14:35:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:52,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:57,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:57,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:57,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:35:57,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:35:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:35:57,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:35:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:35:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:35:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:58,240 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:58,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:58,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:58,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:58,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:35:58,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:58,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71188112] [2020-10-13 14:35:58,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:58,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:35:58,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81696872] [2020-10-13 14:35:58,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:35:58,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:58,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:35:58,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:35:58,269 INFO L87 Difference]: Start difference. First operand 4487 states and 6275 transitions. Second operand 9 states. [2020-10-13 14:35:58,693 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:36:02,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:02,345 INFO L93 Difference]: Finished difference Result 19520 states and 27621 transitions. [2020-10-13 14:36:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:36:02,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-13 14:36:02,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:02,366 INFO L225 Difference]: With dead ends: 19520 [2020-10-13 14:36:02,367 INFO L226 Difference]: Without dead ends: 16168 [2020-10-13 14:36:02,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:36:02,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16168 states. [2020-10-13 14:36:03,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16168 to 4495. [2020-10-13 14:36:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4495 states. [2020-10-13 14:36:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4495 states to 4495 states and 6287 transitions. [2020-10-13 14:36:03,035 INFO L78 Accepts]: Start accepts. Automaton has 4495 states and 6287 transitions. Word has length 57 [2020-10-13 14:36:03,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:03,035 INFO L479 AbstractCegarLoop]: Abstraction has 4495 states and 6287 transitions. [2020-10-13 14:36:03,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:36:03,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4495 states and 6287 transitions. [2020-10-13 14:36:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:36:03,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:03,037 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] [2020-10-13 14:36:03,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:36:03,037 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:03,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1323382892, now seen corresponding path program 1 times [2020-10-13 14:36:03,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:03,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128801628] [2020-10-13 14:36:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:03,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:08,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:08,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:36:08,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:36:08,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:36:08,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:36:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:36:08,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:36:08,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:08,553 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:08,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:08,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:08,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:08,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:08,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:36:08,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:08,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:08,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128801628] [2020-10-13 14:36:08,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:08,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:36:08,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147152379] [2020-10-13 14:36:08,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:36:08,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:08,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:36:08,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:36:08,580 INFO L87 Difference]: Start difference. First operand 4495 states and 6287 transitions. Second operand 10 states. [2020-10-13 14:36:09,020 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-13 14:36:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:13,998 INFO L93 Difference]: Finished difference Result 22952 states and 32441 transitions. [2020-10-13 14:36:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:36:13,998 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 14:36:13,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:14,017 INFO L225 Difference]: With dead ends: 22952 [2020-10-13 14:36:14,017 INFO L226 Difference]: Without dead ends: 19600 [2020-10-13 14:36:14,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:36:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19600 states. [2020-10-13 14:36:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19600 to 4498. [2020-10-13 14:36:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2020-10-13 14:36:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 6290 transitions. [2020-10-13 14:36:14,556 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 6290 transitions. Word has length 57 [2020-10-13 14:36:14,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:14,557 INFO L479 AbstractCegarLoop]: Abstraction has 4498 states and 6290 transitions. [2020-10-13 14:36:14,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:36:14,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 6290 transitions. [2020-10-13 14:36:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:36:14,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:14,559 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] [2020-10-13 14:36:14,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:36:14,559 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:14,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:14,559 INFO L82 PathProgramCache]: Analyzing trace with hash 269322308, now seen corresponding path program 1 times [2020-10-13 14:36:14,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:14,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193104399] [2020-10-13 14:36:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:14,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:14,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:14,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:16,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:16,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:16,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:16,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:19,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:19,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:36:19,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:36:19,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:36:19,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:36:19,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:36:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:36:19,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:19,989 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:19,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:20,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:20,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:20,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:20,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:36:20,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:36:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:36:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:20,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193104399] [2020-10-13 14:36:20,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:20,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:36:20,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008361206] [2020-10-13 14:36:20,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:36:20,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:36:20,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:36:20,029 INFO L87 Difference]: Start difference. First operand 4498 states and 6290 transitions. Second operand 6 states. [2020-10-13 14:36:20,550 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-13 14:36:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:22,056 INFO L93 Difference]: Finished difference Result 8098 states and 11430 transitions. [2020-10-13 14:36:22,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:36:22,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:36:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:22,061 INFO L225 Difference]: With dead ends: 8098 [2020-10-13 14:36:22,061 INFO L226 Difference]: Without dead ends: 4168 [2020-10-13 14:36:22,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:36:22,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2020-10-13 14:36:22,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 3222. [2020-10-13 14:36:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3222 states. [2020-10-13 14:36:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4454 transitions. [2020-10-13 14:36:22,413 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4454 transitions. Word has length 57 [2020-10-13 14:36:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:22,413 INFO L479 AbstractCegarLoop]: Abstraction has 3222 states and 4454 transitions. [2020-10-13 14:36:22,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:36:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4454 transitions. [2020-10-13 14:36:22,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:36:22,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:22,415 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] [2020-10-13 14:36:22,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:36:22,415 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:22,415 INFO L82 PathProgramCache]: Analyzing trace with hash 874953489, now seen corresponding path program 1 times [2020-10-13 14:36:22,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:22,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600847514] [2020-10-13 14:36:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:25,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:27,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:27,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:36:27,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:36:27,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:36:27,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:36:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:36:27,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:36:27,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:36:28,110 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:28,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:28,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:28,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:28,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:28,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:28,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:36:28,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:28,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:28,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:28,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:28,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:28,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600847514] [2020-10-13 14:36:28,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:28,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:36:28,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215842462] [2020-10-13 14:36:28,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:36:28,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:28,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:36:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:36:28,148 INFO L87 Difference]: Start difference. First operand 3222 states and 4454 transitions. Second operand 10 states. [2020-10-13 14:36:28,646 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-13 14:36:33,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:33,216 INFO L93 Difference]: Finished difference Result 8727 states and 12212 transitions. [2020-10-13 14:36:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 14:36:33,217 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-13 14:36:33,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:33,224 INFO L225 Difference]: With dead ends: 8727 [2020-10-13 14:36:33,224 INFO L226 Difference]: Without dead ends: 8723 [2020-10-13 14:36:33,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 14:36:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8723 states. [2020-10-13 14:36:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8723 to 3233. [2020-10-13 14:36:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3233 states. [2020-10-13 14:36:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4472 transitions. [2020-10-13 14:36:33,629 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 4472 transitions. Word has length 58 [2020-10-13 14:36:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:33,630 INFO L479 AbstractCegarLoop]: Abstraction has 3233 states and 4472 transitions. [2020-10-13 14:36:33,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:36:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 4472 transitions. [2020-10-13 14:36:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:36:33,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:33,631 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] [2020-10-13 14:36:33,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:36:33,632 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:33,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1742922756, now seen corresponding path program 1 times [2020-10-13 14:36:33,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:33,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619319414] [2020-10-13 14:36:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:34,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:34,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:34,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:34,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:35,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:35,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:37,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:37,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:38,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:38,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:36:38,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:36:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:36:38,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:36:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:36:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:36:38,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:39,146 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:39,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:39,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:39,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:39,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:36:39,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:39,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619319414] [2020-10-13 14:36:39,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:39,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:36:39,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387854987] [2020-10-13 14:36:39,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:36:39,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:39,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:36:39,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:36:39,176 INFO L87 Difference]: Start difference. First operand 3233 states and 4472 transitions. Second operand 10 states. [2020-10-13 14:36:39,584 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-13 14:36:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:42,534 INFO L93 Difference]: Finished difference Result 6814 states and 9525 transitions. [2020-10-13 14:36:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:36:42,534 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-13 14:36:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:42,540 INFO L225 Difference]: With dead ends: 6814 [2020-10-13 14:36:42,540 INFO L226 Difference]: Without dead ends: 6810 [2020-10-13 14:36:42,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:36:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2020-10-13 14:36:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 3229. [2020-10-13 14:36:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3229 states. [2020-10-13 14:36:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4466 transitions. [2020-10-13 14:36:42,928 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4466 transitions. Word has length 58 [2020-10-13 14:36:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:42,928 INFO L479 AbstractCegarLoop]: Abstraction has 3229 states and 4466 transitions. [2020-10-13 14:36:42,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:36:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4466 transitions. [2020-10-13 14:36:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:36:42,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:42,930 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] [2020-10-13 14:36:42,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:36:42,930 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:42,930 INFO L82 PathProgramCache]: Analyzing trace with hash 688862172, now seen corresponding path program 1 times [2020-10-13 14:36:42,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:42,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820375102] [2020-10-13 14:36:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:43,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:44,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:45,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:45,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:46,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:47,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:47,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:36:47,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:36:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:36:47,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:36:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:36:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:36:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:48,406 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:48,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:48,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:36:48,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:48,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820375102] [2020-10-13 14:36:48,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:48,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:36:48,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144243896] [2020-10-13 14:36:48,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:36:48,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:48,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:36:48,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:36:48,437 INFO L87 Difference]: Start difference. First operand 3229 states and 4466 transitions. Second operand 8 states. [2020-10-13 14:36:48,869 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2020-10-13 14:36:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:51,119 INFO L93 Difference]: Finished difference Result 7688 states and 10759 transitions. [2020-10-13 14:36:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:36:51,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-13 14:36:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:51,124 INFO L225 Difference]: With dead ends: 7688 [2020-10-13 14:36:51,125 INFO L226 Difference]: Without dead ends: 5110 [2020-10-13 14:36:51,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:36:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2020-10-13 14:36:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 3137. [2020-10-13 14:36:51,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3137 states. [2020-10-13 14:36:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 4355 transitions. [2020-10-13 14:36:51,565 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 4355 transitions. Word has length 58 [2020-10-13 14:36:51,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:51,565 INFO L479 AbstractCegarLoop]: Abstraction has 3137 states and 4355 transitions. [2020-10-13 14:36:51,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:36:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 4355 transitions. [2020-10-13 14:36:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:36:51,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:51,567 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] [2020-10-13 14:36:51,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:36:51,567 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:51,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1241206028, now seen corresponding path program 1 times [2020-10-13 14:36:51,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:51,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835255279] [2020-10-13 14:36:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:53,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:36:53,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:36:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-10-13 14:36:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:36:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 14:36:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:36:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:53,468 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:53,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:53,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:53,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:53,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:53,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:36:53,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:53,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835255279] [2020-10-13 14:36:53,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:53,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:36:53,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770667737] [2020-10-13 14:36:53,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:36:53,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:53,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:36:53,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:53,495 INFO L87 Difference]: Start difference. First operand 3137 states and 4355 transitions. Second operand 4 states. [2020-10-13 14:36:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:55,042 INFO L93 Difference]: Finished difference Result 4333 states and 6014 transitions. [2020-10-13 14:36:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:36:55,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-13 14:36:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:55,046 INFO L225 Difference]: With dead ends: 4333 [2020-10-13 14:36:55,046 INFO L226 Difference]: Without dead ends: 3002 [2020-10-13 14:36:55,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-10-13 14:36:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 3000. [2020-10-13 14:36:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3000 states. [2020-10-13 14:36:55,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 4095 transitions. [2020-10-13 14:36:55,435 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 4095 transitions. Word has length 59 [2020-10-13 14:36:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:55,435 INFO L479 AbstractCegarLoop]: Abstraction has 3000 states and 4095 transitions. [2020-10-13 14:36:55,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:36:55,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 4095 transitions. [2020-10-13 14:36:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 14:36:55,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:55,437 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] [2020-10-13 14:36:55,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:36:55,437 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:55,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2083606076, now seen corresponding path program 1 times [2020-10-13 14:36:55,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:55,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260306483] [2020-10-13 14:36:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:55,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:58,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:58,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 14:36:58,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:36:58,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3119 [2020-10-13 14:36:58,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:36:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:36:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 14:36:58,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:59,075 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:59,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:59,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:59,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:59,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:36:59,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:59,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260306483] [2020-10-13 14:36:59,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:59,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:36:59,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003864526] [2020-10-13 14:36:59,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:36:59,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:59,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:36:59,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:36:59,103 INFO L87 Difference]: Start difference. First operand 3000 states and 4095 transitions. Second operand 11 states. [2020-10-13 14:36:59,517 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-13 14:37:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:37:03,885 INFO L93 Difference]: Finished difference Result 9180 states and 12470 transitions. [2020-10-13 14:37:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 14:37:03,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-10-13 14:37:03,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:37:03,898 INFO L225 Difference]: With dead ends: 9180 [2020-10-13 14:37:03,899 INFO L226 Difference]: Without dead ends: 9176 [2020-10-13 14:37:03,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-10-13 14:37:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9176 states. [2020-10-13 14:37:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9176 to 2985. [2020-10-13 14:37:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2985 states. [2020-10-13 14:37:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4073 transitions. [2020-10-13 14:37:04,348 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4073 transitions. Word has length 61 [2020-10-13 14:37:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:37:04,349 INFO L479 AbstractCegarLoop]: Abstraction has 2985 states and 4073 transitions. [2020-10-13 14:37:04,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:37:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4073 transitions. [2020-10-13 14:37:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:37:04,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:37:04,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:37:04,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:37:04,351 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:37:04,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:37:04,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1790906979, now seen corresponding path program 1 times [2020-10-13 14:37:04,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:37:04,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079393535] [2020-10-13 14:37:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:37:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:37:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:04,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:07,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:37:07,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:37:07,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:37:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2986 [2020-10-13 14:37:07,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:37:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:37:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 14:37:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 14:37:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:37:07,770 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:37:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:37:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:37:07,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:07,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:37:07,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:37:07,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:37:07,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:37:07,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:37:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:37:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:37:07,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:37:07,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:37:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:37:07,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079393535] [2020-10-13 14:37:07,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:37:07,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:37:07,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789309694] [2020-10-13 14:37:07,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:37:07,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:37:07,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:37:07,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:37:07,805 INFO L87 Difference]: Start difference. First operand 2985 states and 4073 transitions. Second operand 4 states. [2020-10-13 14:37:08,223 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-13 14:37:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:37:10,044 INFO L93 Difference]: Finished difference Result 7401 states and 10271 transitions. [2020-10-13 14:37:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:37:10,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-13 14:37:10,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:37:10,049 INFO L225 Difference]: With dead ends: 7401 [2020-10-13 14:37:10,049 INFO L226 Difference]: Without dead ends: 4957 [2020-10-13 14:37:10,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:37:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2020-10-13 14:37:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 4745. [2020-10-13 14:37:10,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4745 states. [2020-10-13 14:37:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 6525 transitions. [2020-10-13 14:37:10,831 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 6525 transitions. Word has length 70 [2020-10-13 14:37:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:37:10,831 INFO L479 AbstractCegarLoop]: Abstraction has 4745 states and 6525 transitions. [2020-10-13 14:37:10,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:37:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 6525 transitions. [2020-10-13 14:37:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:37:10,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:37:10,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:37:10,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:37:10,833 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:37:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:37:10,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1834778190, now seen corresponding path program 1 times [2020-10-13 14:37:10,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:37:10,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055765250] [2020-10-13 14:37:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:37:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:37:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:10,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:11,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:11,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:12,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:37:12,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:37:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:37:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1780 [2020-10-13 14:37:12,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:37:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:37:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 14:37:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 14:37:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:37:13,048 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:37:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:37:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:37:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:13,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:37:13,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:37:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:37:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:37:13,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:37:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:37:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:37:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:37:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:37:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:37:13,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055765250] [2020-10-13 14:37:13,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:37:13,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:37:13,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76342716] [2020-10-13 14:37:13,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:37:13,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:37:13,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:37:13,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:37:13,078 INFO L87 Difference]: Start difference. First operand 4745 states and 6525 transitions. Second operand 4 states. [2020-10-13 14:37:13,490 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-13 14:37:15,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:37:15,936 INFO L93 Difference]: Finished difference Result 12697 states and 17659 transitions. [2020-10-13 14:37:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:37:15,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-13 14:37:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:37:15,943 INFO L225 Difference]: With dead ends: 12697 [2020-10-13 14:37:15,944 INFO L226 Difference]: Without dead ends: 8517 [2020-10-13 14:37:15,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:37:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2020-10-13 14:37:17,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 7915. [2020-10-13 14:37:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7915 states. [2020-10-13 14:37:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7915 states to 7915 states and 10915 transitions. [2020-10-13 14:37:17,278 INFO L78 Accepts]: Start accepts. Automaton has 7915 states and 10915 transitions. Word has length 70 [2020-10-13 14:37:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:37:17,278 INFO L479 AbstractCegarLoop]: Abstraction has 7915 states and 10915 transitions. [2020-10-13 14:37:17,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:37:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 7915 states and 10915 transitions. [2020-10-13 14:37:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:37:17,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:37:17,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:37:17,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:37:17,280 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:37:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:37:17,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1641738760, now seen corresponding path program 1 times [2020-10-13 14:37:17,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:37:17,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599451396] [2020-10-13 14:37:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:37:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:37:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:17,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:17,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:17,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:19,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:37:19,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:37:19,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:37:19,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-10-13 14:37:19,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:37:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:37:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 14:37:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:37:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:37:19,433 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:37:19,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:37:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:37:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:19,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:37:19,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:37:19,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:37:19,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:37:19,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:37:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:37:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:37:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:37:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:37:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:37:19,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599451396] [2020-10-13 14:37:19,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:37:19,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:37:19,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980530352] [2020-10-13 14:37:19,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:37:19,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:37:19,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:37:19,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:37:19,462 INFO L87 Difference]: Start difference. First operand 7915 states and 10915 transitions. Second operand 4 states. [2020-10-13 14:37:19,890 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-13 14:37:23,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:37:23,419 INFO L93 Difference]: Finished difference Result 21735 states and 30021 transitions. [2020-10-13 14:37:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:37:23,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-13 14:37:23,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:37:23,432 INFO L225 Difference]: With dead ends: 21735 [2020-10-13 14:37:23,433 INFO L226 Difference]: Without dead ends: 14385 [2020-10-13 14:37:23,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:37:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14385 states. [2020-10-13 14:37:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 13183. [2020-10-13 14:37:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13183 states. [2020-10-13 14:37:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 18007 transitions. [2020-10-13 14:37:25,747 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 18007 transitions. Word has length 71 [2020-10-13 14:37:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:37:25,747 INFO L479 AbstractCegarLoop]: Abstraction has 13183 states and 18007 transitions. [2020-10-13 14:37:25,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:37:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 18007 transitions. [2020-10-13 14:37:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:37:25,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:37:25,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:37:25,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:37:25,749 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:37:25,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:37:25,749 INFO L82 PathProgramCache]: Analyzing trace with hash -315805515, now seen corresponding path program 1 times [2020-10-13 14:37:25,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:37:25,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094302997] [2020-10-13 14:37:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:37:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:37:25,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:26,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:26,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:26,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:26,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:37:26,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:37:26,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:37:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-10-13 14:37:26,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:37:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:37:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 14:37:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:37:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:37:27,361 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:37:27,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:37:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:37:27,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:37:27,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:37:27,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:37:27,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:37:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:37:27,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:37:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:37:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:37:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:37:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:37:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:37:27,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094302997] [2020-10-13 14:37:27,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:37:27,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:37:27,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388558139] [2020-10-13 14:37:27,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:37:27,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:37:27,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:37:27,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:37:27,391 INFO L87 Difference]: Start difference. First operand 13183 states and 18007 transitions. Second operand 4 states. [2020-10-13 14:37:27,788 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-13 14:37:33,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:37:33,176 INFO L93 Difference]: Finished difference Result 37459 states and 50857 transitions. [2020-10-13 14:37:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:37:33,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-13 14:37:33,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:37:33,203 INFO L225 Difference]: With dead ends: 37459 [2020-10-13 14:37:33,203 INFO L226 Difference]: Without dead ends: 24841 [2020-10-13 14:37:33,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:37:33,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24841 states.