/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.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:15:38,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:15:38,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:15:38,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:15:38,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:15:38,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:15:38,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:15:38,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:15:38,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:15:38,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:15:39,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:15:39,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:15:39,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:15:39,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:15:39,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:15:39,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:15:39,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:15:39,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:15:39,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:15:39,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:15:39,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:15:39,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:15:39,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:15:39,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:15:39,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:15:39,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:15:39,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:15:39,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:15:39,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:15:39,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:15:39,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:15:39,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:15:39,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:15:39,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:15:39,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:15:39,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:15:39,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:15:39,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:15:39,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:15:39,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:15:39,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:15:39,046 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 14:15:39,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:15:39,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:15:39,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:15:39,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:15:39,090 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:15:39,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:15:39,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:15:39,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:15:39,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:15:39,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:15:39,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:15:39,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:15:39,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:15:39,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:15:39,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:15:39,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:15:39,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:15:39,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:15:39,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:15:39,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:15:39,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:15:39,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:15:39,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:15:39,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:15:39,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:15:39,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:15:39,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:15:39,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:15:39,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:15:39,096 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 14:15:39,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:15:39,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:15:39,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:15:39,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:15:39,417 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:15:39,417 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:15:39,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80c87ffc1/b1d191884b3546299ca42ba2bb139d75/FLAG6bb162b4e [2020-10-13 14:15:40,096 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:15:40,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:15:40,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80c87ffc1/b1d191884b3546299ca42ba2bb139d75/FLAG6bb162b4e [2020-10-13 14:15:40,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80c87ffc1/b1d191884b3546299ca42ba2bb139d75 [2020-10-13 14:15:40,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:15:40,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:15:40,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:15:40,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:15:40,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:15:40,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:15:40" (1/1) ... [2020-10-13 14:15:40,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5db0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:40, skipping insertion in model container [2020-10-13 14:15:40,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:15:40" (1/1) ... [2020-10-13 14:15:40,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:15:40,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:15:41,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:15:41,205 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:15:41,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:15:41,520 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:15:41,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41 WrapperNode [2020-10-13 14:15:41,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:15:41,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:15:41,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:15:41,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:15:41,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41" (1/1) ... [2020-10-13 14:15:41,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41" (1/1) ... [2020-10-13 14:15:41,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41" (1/1) ... [2020-10-13 14:15:41,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41" (1/1) ... [2020-10-13 14:15:41,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41" (1/1) ... [2020-10-13 14:15:41,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41" (1/1) ... [2020-10-13 14:15:41,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41" (1/1) ... [2020-10-13 14:15:41,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:15:41,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:15:41,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:15:41,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:15:41,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41" (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 14:15:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:15:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:15:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:15:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:15:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:15:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:15:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:15:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:15:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:15:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:15:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:15:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:15:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:15:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:15:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:15:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:15:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:15:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:15:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:15:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:15:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:15:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:15:43,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:15:43,922 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:15:43,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:15:43 BoogieIcfgContainer [2020-10-13 14:15:43,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:15:43,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:15:43,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:15:43,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:15:43,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:15:40" (1/3) ... [2020-10-13 14:15:43,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401fa784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:15:43, skipping insertion in model container [2020-10-13 14:15:43,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:15:41" (2/3) ... [2020-10-13 14:15:43,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401fa784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:15:43, skipping insertion in model container [2020-10-13 14:15:43,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:15:43" (3/3) ... [2020-10-13 14:15:43,939 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:15:43,950 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:15:43,959 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-13 14:15:43,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-13 14:15:44,001 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:15:44,001 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:15:44,001 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:15:44,001 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:15:44,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:15:44,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:15:44,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:15:44,002 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:15:44,034 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2020-10-13 14:15:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:15:44,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:44,053 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] [2020-10-13 14:15:44,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:44,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1666706590, now seen corresponding path program 1 times [2020-10-13 14:15:44,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:44,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560714550] [2020-10-13 14:15:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:44,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:44,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:46,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:47,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:49,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:49,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:15:49,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:15:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 14:15:49,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:15:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:15:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:15:49,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 14:15:50,021 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:15:50,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:50,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:50,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:50,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:15:50,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:50,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:50,090 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 14:15:50,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560714550] [2020-10-13 14:15:50,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:50,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:15:50,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348816732] [2020-10-13 14:15:50,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:15:50,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:50,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:15:50,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:15:50,119 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 7 states. [2020-10-13 14:15:50,598 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:15:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:55,158 INFO L93 Difference]: Finished difference Result 1453 states and 2410 transitions. [2020-10-13 14:15:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:15:55,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:15:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:55,189 INFO L225 Difference]: With dead ends: 1453 [2020-10-13 14:15:55,190 INFO L226 Difference]: Without dead ends: 1261 [2020-10-13 14:15:55,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:15:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2020-10-13 14:15:55,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 701. [2020-10-13 14:15:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-10-13 14:15:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 927 transitions. [2020-10-13 14:15:55,308 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 927 transitions. Word has length 63 [2020-10-13 14:15:55,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:55,309 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 927 transitions. [2020-10-13 14:15:55,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:15:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 927 transitions. [2020-10-13 14:15:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:15:55,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:55,316 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] [2020-10-13 14:15:55,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:15:55,317 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 478280318, now seen corresponding path program 1 times [2020-10-13 14:15:55,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:55,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612552001] [2020-10-13 14:15:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:59,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:00,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:00,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:16:00,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:16:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:16:00,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:00,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:16:00,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:16:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:16:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 14:16:00,976 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:00,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:01,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:01,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:16:01,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:01,019 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 14:16:01,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612552001] [2020-10-13 14:16:01,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:01,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:16:01,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059095759] [2020-10-13 14:16:01,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:16:01,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:01,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:16:01,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:16:01,024 INFO L87 Difference]: Start difference. First operand 701 states and 927 transitions. Second operand 7 states. [2020-10-13 14:16:01,389 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:16:04,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:04,792 INFO L93 Difference]: Finished difference Result 2249 states and 3147 transitions. [2020-10-13 14:16:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:04,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:16:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:04,807 INFO L225 Difference]: With dead ends: 2249 [2020-10-13 14:16:04,808 INFO L226 Difference]: Without dead ends: 2020 [2020-10-13 14:16:04,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 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 14:16:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-13 14:16:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1149. [2020-10-13 14:16:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2020-10-13 14:16:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1593 transitions. [2020-10-13 14:16:04,958 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1593 transitions. Word has length 63 [2020-10-13 14:16:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:04,959 INFO L479 AbstractCegarLoop]: Abstraction has 1149 states and 1593 transitions. [2020-10-13 14:16:04,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:16:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1593 transitions. [2020-10-13 14:16:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:16:04,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:04,967 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] [2020-10-13 14:16:04,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:16:04,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:04,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:04,968 INFO L82 PathProgramCache]: Analyzing trace with hash 940154528, now seen corresponding path program 1 times [2020-10-13 14:16:04,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:04,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122215875] [2020-10-13 14:16:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:07,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:10,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:10,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:16:10,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:16:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:16:10,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:16:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:16:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:16:10,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:10,445 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:10,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:10,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:10,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:10,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:16:10,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:10,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:10,483 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 14:16:10,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122215875] [2020-10-13 14:16:10,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:10,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:16:10,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146849255] [2020-10-13 14:16:10,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:16:10,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:10,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:16:10,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:16:10,487 INFO L87 Difference]: Start difference. First operand 1149 states and 1593 transitions. Second operand 7 states. [2020-10-13 14:16:10,859 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:16:13,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:13,866 INFO L93 Difference]: Finished difference Result 4313 states and 6297 transitions. [2020-10-13 14:16:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:13,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:16:13,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:13,886 INFO L225 Difference]: With dead ends: 4313 [2020-10-13 14:16:13,887 INFO L226 Difference]: Without dead ends: 3789 [2020-10-13 14:16:13,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:16:13,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2020-10-13 14:16:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 2195. [2020-10-13 14:16:14,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2195 states. [2020-10-13 14:16:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3164 transitions. [2020-10-13 14:16:14,010 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3164 transitions. Word has length 63 [2020-10-13 14:16:14,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:14,011 INFO L479 AbstractCegarLoop]: Abstraction has 2195 states and 3164 transitions. [2020-10-13 14:16:14,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:16:14,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3164 transitions. [2020-10-13 14:16:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:16:14,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:14,014 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] [2020-10-13 14:16:14,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:16:14,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:14,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1556222906, now seen corresponding path program 1 times [2020-10-13 14:16:14,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:14,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849280673] [2020-10-13 14:16:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:14,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:17,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:18,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:19,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:19,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:16:19,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:16:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:16:19,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:16:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:16:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 14:16:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:19,441 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:19,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:19,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:19,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:16:19,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:19,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:19,483 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 14:16:19,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849280673] [2020-10-13 14:16:19,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:19,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:16:19,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618105304] [2020-10-13 14:16:19,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:16:19,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:19,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:16:19,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:16:19,486 INFO L87 Difference]: Start difference. First operand 2195 states and 3164 transitions. Second operand 7 states. [2020-10-13 14:16:19,872 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:16:22,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:22,724 INFO L93 Difference]: Finished difference Result 5795 states and 8612 transitions. [2020-10-13 14:16:22,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:22,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:16:22,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:22,746 INFO L225 Difference]: With dead ends: 5795 [2020-10-13 14:16:22,746 INFO L226 Difference]: Without dead ends: 4315 [2020-10-13 14:16:22,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:16:22,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2020-10-13 14:16:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 1964. [2020-10-13 14:16:22,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2020-10-13 14:16:22,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2835 transitions. [2020-10-13 14:16:22,873 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2835 transitions. Word has length 63 [2020-10-13 14:16:22,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:22,873 INFO L479 AbstractCegarLoop]: Abstraction has 1964 states and 2835 transitions. [2020-10-13 14:16:22,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:16:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2835 transitions. [2020-10-13 14:16:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:16:22,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:22,876 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] [2020-10-13 14:16:22,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:16:22,877 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:22,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1929658970, now seen corresponding path program 1 times [2020-10-13 14:16:22,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:22,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054313963] [2020-10-13 14:16:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:22,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:25,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:27,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:27,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:27,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:16:27,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:16:27,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:16:27,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:27,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:16:27,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:16:27,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:16:27,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:28,450 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:28,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:16:28,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:28,492 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 14:16:28,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054313963] [2020-10-13 14:16:28,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:28,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:16:28,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935798104] [2020-10-13 14:16:28,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:16:28,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:28,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:16:28,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:16:28,496 INFO L87 Difference]: Start difference. First operand 1964 states and 2835 transitions. Second operand 7 states. [2020-10-13 14:16:29,089 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:16:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:31,740 INFO L93 Difference]: Finished difference Result 5104 states and 7565 transitions. [2020-10-13 14:16:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:31,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:16:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:31,757 INFO L225 Difference]: With dead ends: 5104 [2020-10-13 14:16:31,758 INFO L226 Difference]: Without dead ends: 4095 [2020-10-13 14:16:31,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:16:31,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2020-10-13 14:16:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 1807. [2020-10-13 14:16:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-10-13 14:16:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2609 transitions. [2020-10-13 14:16:31,876 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2609 transitions. Word has length 63 [2020-10-13 14:16:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:31,876 INFO L479 AbstractCegarLoop]: Abstraction has 1807 states and 2609 transitions. [2020-10-13 14:16:31,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:16:31,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2609 transitions. [2020-10-13 14:16:31,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:16:31,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:31,903 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] [2020-10-13 14:16:31,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:16:31,903 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:31,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:31,904 INFO L82 PathProgramCache]: Analyzing trace with hash -882405207, now seen corresponding path program 1 times [2020-10-13 14:16:31,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:31,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498780925] [2020-10-13 14:16:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:31,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:32,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:32,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:36,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:16:36,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:16:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:16:36,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:16:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:16:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:16:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:37,551 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:37,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:37,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:37,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:37,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:16:37,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:37,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:37,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:37,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:16:37,597 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 14:16:37,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498780925] [2020-10-13 14:16:37,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:37,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:16:37,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730072421] [2020-10-13 14:16:37,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:16:37,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:37,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:16:37,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:16:37,601 INFO L87 Difference]: Start difference. First operand 1807 states and 2609 transitions. Second operand 7 states. [2020-10-13 14:16:38,087 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-13 14:16:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:40,716 INFO L93 Difference]: Finished difference Result 4787 states and 7101 transitions. [2020-10-13 14:16:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:40,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:16:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:40,733 INFO L225 Difference]: With dead ends: 4787 [2020-10-13 14:16:40,734 INFO L226 Difference]: Without dead ends: 3798 [2020-10-13 14:16:40,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:16:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2020-10-13 14:16:40,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 1675. [2020-10-13 14:16:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2020-10-13 14:16:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2414 transitions. [2020-10-13 14:16:40,840 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2414 transitions. Word has length 63 [2020-10-13 14:16:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:40,840 INFO L479 AbstractCegarLoop]: Abstraction has 1675 states and 2414 transitions. [2020-10-13 14:16:40,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:16:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2414 transitions. [2020-10-13 14:16:40,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:16:40,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:40,843 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] [2020-10-13 14:16:40,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:16:40,843 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:40,844 INFO L82 PathProgramCache]: Analyzing trace with hash 53953382, now seen corresponding path program 1 times [2020-10-13 14:16:40,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:40,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066955736] [2020-10-13 14:16:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:40,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:42,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:45,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:45,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:45,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:16:45,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:16:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:16:45,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:16:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:16:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:16:45,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:46,314 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:46,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:46,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:46,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:46,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 14:16:46,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:16:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:16:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:46,374 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 14:16:46,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066955736] [2020-10-13 14:16:46,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:46,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:16:46,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338730442] [2020-10-13 14:16:46,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:16:46,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:46,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:16:46,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:16:46,376 INFO L87 Difference]: Start difference. First operand 1675 states and 2414 transitions. Second operand 6 states. [2020-10-13 14:16:46,741 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-13 14:16:48,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:48,656 INFO L93 Difference]: Finished difference Result 2777 states and 4012 transitions. [2020-10-13 14:16:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:16:48,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:16:48,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:48,664 INFO L225 Difference]: With dead ends: 2777 [2020-10-13 14:16:48,664 INFO L226 Difference]: Without dead ends: 2233 [2020-10-13 14:16:48,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:16:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2020-10-13 14:16:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 1495. [2020-10-13 14:16:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1495 states. [2020-10-13 14:16:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2130 transitions. [2020-10-13 14:16:48,789 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2130 transitions. Word has length 64 [2020-10-13 14:16:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:48,790 INFO L479 AbstractCegarLoop]: Abstraction has 1495 states and 2130 transitions. [2020-10-13 14:16:48,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:16:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2130 transitions. [2020-10-13 14:16:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:16:48,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:48,792 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] [2020-10-13 14:16:48,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:16:48,792 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:48,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1937354705, now seen corresponding path program 1 times [2020-10-13 14:16:48,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:48,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538839432] [2020-10-13 14:16:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:48,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:48,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:49,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:53,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:53,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:16:53,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:16:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:16:53,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:16:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:16:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:16:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:54,192 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:16:54,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:54,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 14:16:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:16:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:16:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:54,234 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 14:16:54,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538839432] [2020-10-13 14:16:54,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:54,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:16:54,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834900113] [2020-10-13 14:16:54,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:16:54,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:54,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:16:54,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:16:54,237 INFO L87 Difference]: Start difference. First operand 1495 states and 2130 transitions. Second operand 6 states. [2020-10-13 14:16:54,629 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-13 14:16:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:55,968 INFO L93 Difference]: Finished difference Result 2338 states and 3398 transitions. [2020-10-13 14:16:55,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:16:55,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:16:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:55,973 INFO L225 Difference]: With dead ends: 2338 [2020-10-13 14:16:55,973 INFO L226 Difference]: Without dead ends: 1360 [2020-10-13 14:16:55,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:16:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-13 14:16:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 865. [2020-10-13 14:16:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-10-13 14:16:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1216 transitions. [2020-10-13 14:16:56,062 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1216 transitions. Word has length 64 [2020-10-13 14:16:56,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:56,062 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1216 transitions. [2020-10-13 14:16:56,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:16:56,062 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1216 transitions. [2020-10-13 14:16:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:16:56,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:56,064 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] [2020-10-13 14:16:56,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:16:56,064 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:56,065 INFO L82 PathProgramCache]: Analyzing trace with hash 103950116, now seen corresponding path program 1 times [2020-10-13 14:16:56,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:56,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495914480] [2020-10-13 14:16:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:56,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:56,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:56,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:58,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:59,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:59,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:00,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:01,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:01,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:17:01,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:17:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:17:01,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:17:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:17:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:17:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:01,466 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:01,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:01,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:17:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:01,491 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 14:17:01,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495914480] [2020-10-13 14:17:01,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:01,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:17:01,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980555193] [2020-10-13 14:17:01,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:17:01,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:01,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:17:01,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:17:01,493 INFO L87 Difference]: Start difference. First operand 865 states and 1216 transitions. Second operand 6 states. [2020-10-13 14:17:01,850 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-13 14:17:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:03,786 INFO L93 Difference]: Finished difference Result 2219 states and 3200 transitions. [2020-10-13 14:17:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:17:03,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:17:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:03,793 INFO L225 Difference]: With dead ends: 2219 [2020-10-13 14:17:03,794 INFO L226 Difference]: Without dead ends: 1807 [2020-10-13 14:17:03,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2020-10-13 14:17:03,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1481. [2020-10-13 14:17:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-10-13 14:17:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2146 transitions. [2020-10-13 14:17:03,946 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2146 transitions. Word has length 64 [2020-10-13 14:17:03,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:03,946 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 2146 transitions. [2020-10-13 14:17:03,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:17:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2146 transitions. [2020-10-13 14:17:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:17:03,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:03,948 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] [2020-10-13 14:17:03,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:17:03,949 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1656486796, now seen corresponding path program 1 times [2020-10-13 14:17:03,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:03,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443190276] [2020-10-13 14:17:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:05,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:08,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:17:08,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:17:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:17:08,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:17:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:17:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:17:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:09,323 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:09,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:09,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:09,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:09,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:17:09,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:09,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:17:09,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:09,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:17:09,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:09,359 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 14:17:09,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443190276] [2020-10-13 14:17:09,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:09,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:17:09,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459569638] [2020-10-13 14:17:09,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:17:09,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:09,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:17:09,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:17:09,361 INFO L87 Difference]: Start difference. First operand 1481 states and 2146 transitions. Second operand 6 states. [2020-10-13 14:17:09,763 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-13 14:17:11,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:11,107 INFO L93 Difference]: Finished difference Result 1917 states and 2795 transitions. [2020-10-13 14:17:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:17:11,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:17:11,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:11,111 INFO L225 Difference]: With dead ends: 1917 [2020-10-13 14:17:11,111 INFO L226 Difference]: Without dead ends: 799 [2020-10-13 14:17:11,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:17:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-10-13 14:17:11,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 568. [2020-10-13 14:17:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-13 14:17:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 779 transitions. [2020-10-13 14:17:11,180 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 779 transitions. Word has length 64 [2020-10-13 14:17:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:11,180 INFO L479 AbstractCegarLoop]: Abstraction has 568 states and 779 transitions. [2020-10-13 14:17:11,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:17:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 779 transitions. [2020-10-13 14:17:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:17:11,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:11,182 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] [2020-10-13 14:17:11,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:17:11,182 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:11,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:11,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1606107799, now seen corresponding path program 1 times [2020-10-13 14:17:11,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:11,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234980581] [2020-10-13 14:17:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:11,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:11,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:11,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:11,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:12,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:12,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:12,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:16,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:16,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:17:16,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:17:16,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:17:16,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:17:16,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:17:16,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:17:16,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:16,580 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:16,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:16,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:16,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:16,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:16,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:17:16,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:17:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:17:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:16,618 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 14:17:16,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234980581] [2020-10-13 14:17:16,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:16,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:17:16,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864684348] [2020-10-13 14:17:16,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:17:16,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:16,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:17:16,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:17:16,620 INFO L87 Difference]: Start difference. First operand 568 states and 779 transitions. Second operand 6 states. [2020-10-13 14:17:17,011 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-13 14:17:18,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:18,244 INFO L93 Difference]: Finished difference Result 874 states and 1192 transitions. [2020-10-13 14:17:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:17:18,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 14:17:18,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:18,247 INFO L225 Difference]: With dead ends: 874 [2020-10-13 14:17:18,247 INFO L226 Difference]: Without dead ends: 544 [2020-10-13 14:17:18,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:17:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-10-13 14:17:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 514. [2020-10-13 14:17:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-13 14:17:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 709 transitions. [2020-10-13 14:17:18,298 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 709 transitions. Word has length 64 [2020-10-13 14:17:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:18,299 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 709 transitions. [2020-10-13 14:17:18,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:17:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 709 transitions. [2020-10-13 14:17:18,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:17:18,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:18,300 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] [2020-10-13 14:17:18,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:17:18,301 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:18,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:18,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1381325977, now seen corresponding path program 1 times [2020-10-13 14:17:18,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:18,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846846518] [2020-10-13 14:17:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:18,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:18,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:20,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:21,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:22,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:23,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:23,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:17:23,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:17:23,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:17:23,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:17:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:17:23,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:23,875 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:23,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:23,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:23,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:17:23,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:23,912 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 14:17:23,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846846518] [2020-10-13 14:17:23,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:23,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:23,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43234095] [2020-10-13 14:17:23,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:23,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:23,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:23,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:23,914 INFO L87 Difference]: Start difference. First operand 514 states and 709 transitions. Second operand 11 states. [2020-10-13 14:17:24,374 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-13 14:17:28,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:28,925 INFO L93 Difference]: Finished difference Result 2222 states and 3211 transitions. [2020-10-13 14:17:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:17:28,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-13 14:17:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:28,931 INFO L225 Difference]: With dead ends: 2222 [2020-10-13 14:17:28,931 INFO L226 Difference]: Without dead ends: 2004 [2020-10-13 14:17:28,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:17:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-10-13 14:17:29,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 514. [2020-10-13 14:17:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-13 14:17:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 708 transitions. [2020-10-13 14:17:29,028 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 708 transitions. Word has length 65 [2020-10-13 14:17:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:29,029 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 708 transitions. [2020-10-13 14:17:29,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:29,029 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 708 transitions. [2020-10-13 14:17:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:17:29,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:29,030 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] [2020-10-13 14:17:29,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:17:29,030 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:29,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1000678244, now seen corresponding path program 1 times [2020-10-13 14:17:29,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:29,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229341943] [2020-10-13 14:17:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:29,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:34,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:34,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:17:34,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:17:34,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:17:34,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:34,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:17:34,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:17:34,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:17:34,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:34,549 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:34,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:34,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:34,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:17:34,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:34,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229341943] [2020-10-13 14:17:34,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:34,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:17:34,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682279219] [2020-10-13 14:17:34,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:17:34,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:34,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:17:34,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:17:34,590 INFO L87 Difference]: Start difference. First operand 514 states and 708 transitions. Second operand 10 states. [2020-10-13 14:17:35,535 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 221 [2020-10-13 14:17:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:38,350 INFO L93 Difference]: Finished difference Result 1426 states and 2041 transitions. [2020-10-13 14:17:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:17:38,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-13 14:17:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:38,353 INFO L225 Difference]: With dead ends: 1426 [2020-10-13 14:17:38,353 INFO L226 Difference]: Without dead ends: 1186 [2020-10-13 14:17:38,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:17:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2020-10-13 14:17:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 514. [2020-10-13 14:17:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-13 14:17:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 707 transitions. [2020-10-13 14:17:38,414 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 707 transitions. Word has length 65 [2020-10-13 14:17:38,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:38,414 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 707 transitions. [2020-10-13 14:17:38,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:17:38,414 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 707 transitions. [2020-10-13 14:17:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:17:38,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:38,415 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:17:38,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:17:38,415 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:38,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:38,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2146673407, now seen corresponding path program 1 times [2020-10-13 14:17:38,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:38,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929617264] [2020-10-13 14:17:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:38,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:43,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:43,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:17:43,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:17:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:17:43,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:17:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:17:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:17:43,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:43,805 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:43,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:43,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:43,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:43,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:17:43,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:43,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:43,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:43,829 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 14:17:43,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929617264] [2020-10-13 14:17:43,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:43,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:17:43,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284257337] [2020-10-13 14:17:43,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:17:43,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:43,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:17:43,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:17:43,831 INFO L87 Difference]: Start difference. First operand 514 states and 707 transitions. Second operand 7 states. [2020-10-13 14:17:44,210 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-13 14:17:45,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:45,520 INFO L93 Difference]: Finished difference Result 1107 states and 1536 transitions. [2020-10-13 14:17:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:17:45,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-13 14:17:45,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:45,522 INFO L225 Difference]: With dead ends: 1107 [2020-10-13 14:17:45,522 INFO L226 Difference]: Without dead ends: 797 [2020-10-13 14:17:45,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:45,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-10-13 14:17:45,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 514. [2020-10-13 14:17:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-13 14:17:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 706 transitions. [2020-10-13 14:17:45,609 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 706 transitions. Word has length 65 [2020-10-13 14:17:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:45,609 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 706 transitions. [2020-10-13 14:17:45,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:17:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 706 transitions. [2020-10-13 14:17:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:17:45,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:45,610 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] [2020-10-13 14:17:45,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:17:45,611 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash 836898918, now seen corresponding path program 1 times [2020-10-13 14:17:45,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:45,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200703456] [2020-10-13 14:17:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:45,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:45,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:46,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:46,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:49,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:50,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:50,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:17:50,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:17:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:17:50,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:17:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:17:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:51,121 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:51,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:51,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:51,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:51,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:51,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:17:51,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:51,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:51,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:51,153 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 14:17:51,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200703456] [2020-10-13 14:17:51,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:51,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:51,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564382143] [2020-10-13 14:17:51,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:51,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:51,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:51,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:51,156 INFO L87 Difference]: Start difference. First operand 514 states and 706 transitions. Second operand 11 states. [2020-10-13 14:17:51,526 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-13 14:17:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:53,790 INFO L93 Difference]: Finished difference Result 1617 states and 2305 transitions. [2020-10-13 14:17:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:17:53,790 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:17:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:53,793 INFO L225 Difference]: With dead ends: 1617 [2020-10-13 14:17:53,793 INFO L226 Difference]: Without dead ends: 1401 [2020-10-13 14:17:53,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:17:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2020-10-13 14:17:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 492. [2020-10-13 14:17:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-13 14:17:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 671 transitions. [2020-10-13 14:17:53,861 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 671 transitions. Word has length 67 [2020-10-13 14:17:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:53,861 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 671 transitions. [2020-10-13 14:17:53,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 671 transitions. [2020-10-13 14:17:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:17:53,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:53,862 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] [2020-10-13 14:17:53,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:17:53,863 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:53,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1905531698, now seen corresponding path program 1 times [2020-10-13 14:17:53,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:53,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267662770] [2020-10-13 14:17:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:53,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:54,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:55,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:58,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:17:58,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:17:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:17:58,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:17:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:17:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:59,359 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:17:59,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:59,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:59,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:59,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:59,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:17:59,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:59,383 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 14:17:59,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267662770] [2020-10-13 14:17:59,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:59,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:59,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76059025] [2020-10-13 14:17:59,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:59,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:59,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:59,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:59,385 INFO L87 Difference]: Start difference. First operand 492 states and 671 transitions. Second operand 11 states. [2020-10-13 14:17:59,905 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-13 14:18:04,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:04,218 INFO L93 Difference]: Finished difference Result 2073 states and 2983 transitions. [2020-10-13 14:18:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:18:04,219 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:18:04,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:04,223 INFO L225 Difference]: With dead ends: 2073 [2020-10-13 14:18:04,223 INFO L226 Difference]: Without dead ends: 2056 [2020-10-13 14:18:04,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:18:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2020-10-13 14:18:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 492. [2020-10-13 14:18:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-13 14:18:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 669 transitions. [2020-10-13 14:18:04,358 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 669 transitions. Word has length 67 [2020-10-13 14:18:04,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:04,358 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 669 transitions. [2020-10-13 14:18:04,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:18:04,359 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 669 transitions. [2020-10-13 14:18:04,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:18:04,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:04,360 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] [2020-10-13 14:18:04,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:18:04,361 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:04,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1401723830, now seen corresponding path program 1 times [2020-10-13 14:18:04,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:04,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305812869] [2020-10-13 14:18:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:04,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:04,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:07,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:09,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:09,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:09,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:18:09,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:18:09,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:18:09,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:18:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:18:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:18:09,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:09,893 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:18:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:09,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:09,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:09,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:18:09,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:09,916 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 14:18:09,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305812869] [2020-10-13 14:18:09,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:09,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:18:09,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105639064] [2020-10-13 14:18:09,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:18:09,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:09,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:18:09,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:18:09,918 INFO L87 Difference]: Start difference. First operand 492 states and 669 transitions. Second operand 11 states. [2020-10-13 14:18:10,362 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-13 14:18:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:15,591 INFO L93 Difference]: Finished difference Result 2826 states and 4081 transitions. [2020-10-13 14:18:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:18:15,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:18:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:15,598 INFO L225 Difference]: With dead ends: 2826 [2020-10-13 14:18:15,598 INFO L226 Difference]: Without dead ends: 2821 [2020-10-13 14:18:15,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:18:15,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2020-10-13 14:18:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 492. [2020-10-13 14:18:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-13 14:18:15,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 667 transitions. [2020-10-13 14:18:15,715 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 667 transitions. Word has length 67 [2020-10-13 14:18:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:15,715 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 667 transitions. [2020-10-13 14:18:15,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:18:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 667 transitions. [2020-10-13 14:18:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:18:15,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:15,717 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] [2020-10-13 14:18:15,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:18:15,717 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:15,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:15,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1283936521, now seen corresponding path program 1 times [2020-10-13 14:18:15,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:15,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906309096] [2020-10-13 14:18:15,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:15,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:16,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:20,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:20,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:20,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:18:20,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:18:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:18:20,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:18:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:18:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:18:20,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:21,226 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:18:21,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:21,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:21,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:21,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:18:21,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:21,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:21,253 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 14:18:21,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906309096] [2020-10-13 14:18:21,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:21,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:18:21,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043944945] [2020-10-13 14:18:21,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:18:21,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:21,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:18:21,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:18:21,255 INFO L87 Difference]: Start difference. First operand 492 states and 667 transitions. Second operand 11 states. [2020-10-13 14:18:21,695 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-13 14:18:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:26,546 INFO L93 Difference]: Finished difference Result 3035 states and 4397 transitions. [2020-10-13 14:18:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:18:26,547 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:18:26,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:26,551 INFO L225 Difference]: With dead ends: 3035 [2020-10-13 14:18:26,551 INFO L226 Difference]: Without dead ends: 2821 [2020-10-13 14:18:26,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:18:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2020-10-13 14:18:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 492. [2020-10-13 14:18:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-13 14:18:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 665 transitions. [2020-10-13 14:18:26,641 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 665 transitions. Word has length 67 [2020-10-13 14:18:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:26,642 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 665 transitions. [2020-10-13 14:18:26,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:18:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 665 transitions. [2020-10-13 14:18:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:18:26,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:26,643 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] [2020-10-13 14:18:26,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:18:26,643 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash 885121441, now seen corresponding path program 1 times [2020-10-13 14:18:26,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:26,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169628445] [2020-10-13 14:18:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:26,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:27,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:28,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:28,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:31,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:31,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:18:31,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:18:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:18:31,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:18:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:18:31,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:18:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:32,123 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:18:32,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:32,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:32,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:32,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:32,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:18:32,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:32,150 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 14:18:32,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169628445] [2020-10-13 14:18:32,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:32,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:18:32,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320662819] [2020-10-13 14:18:32,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:18:32,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:32,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:18:32,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:18:32,152 INFO L87 Difference]: Start difference. First operand 492 states and 665 transitions. Second operand 10 states. [2020-10-13 14:18:32,494 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-13 14:18:34,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:34,006 INFO L93 Difference]: Finished difference Result 1025 states and 1428 transitions. [2020-10-13 14:18:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:18:34,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-13 14:18:34,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:34,008 INFO L225 Difference]: With dead ends: 1025 [2020-10-13 14:18:34,008 INFO L226 Difference]: Without dead ends: 813 [2020-10-13 14:18:34,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:18:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-10-13 14:18:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 480. [2020-10-13 14:18:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-13 14:18:34,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 648 transitions. [2020-10-13 14:18:34,105 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 648 transitions. Word has length 67 [2020-10-13 14:18:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:34,106 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 648 transitions. [2020-10-13 14:18:34,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:18:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 648 transitions. [2020-10-13 14:18:34,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:18:34,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:34,107 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] [2020-10-13 14:18:34,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:18:34,108 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:34,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:34,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1847272574, now seen corresponding path program 1 times [2020-10-13 14:18:34,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:34,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445267267] [2020-10-13 14:18:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:34,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:39,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:18:39,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:18:39,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:18:39,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:18:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:18:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:18:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:39,552 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:18:39,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:39,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:39,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:39,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:39,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:18:39,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:39,580 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 14:18:39,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445267267] [2020-10-13 14:18:39,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:39,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:18:39,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773940591] [2020-10-13 14:18:39,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:18:39,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:39,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:18:39,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:18:39,582 INFO L87 Difference]: Start difference. First operand 480 states and 648 transitions. Second operand 8 states. [2020-10-13 14:18:39,961 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-13 14:18:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:41,063 INFO L93 Difference]: Finished difference Result 942 states and 1321 transitions. [2020-10-13 14:18:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:18:41,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-13 14:18:41,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:41,064 INFO L225 Difference]: With dead ends: 942 [2020-10-13 14:18:41,064 INFO L226 Difference]: Without dead ends: 662 [2020-10-13 14:18:41,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:18:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-10-13 14:18:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 406. [2020-10-13 14:18:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-13 14:18:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 552 transitions. [2020-10-13 14:18:41,147 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 552 transitions. Word has length 67 [2020-10-13 14:18:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:41,147 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 552 transitions. [2020-10-13 14:18:41,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:18:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 552 transitions. [2020-10-13 14:18:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:18:41,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:41,148 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] [2020-10-13 14:18:41,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:18:41,148 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:41,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:41,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1836325368, now seen corresponding path program 1 times [2020-10-13 14:18:41,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:41,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215208142] [2020-10-13 14:18:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:41,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:46,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:46,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:18:46,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:18:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:18:46,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:18:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:18:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 14:18:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:46,632 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:18:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:46,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:46,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:46,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:46,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:18:46,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:46,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:46,656 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 14:18:46,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215208142] [2020-10-13 14:18:46,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:46,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:18:46,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870497560] [2020-10-13 14:18:46,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:18:46,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:46,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:18:46,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:18:46,658 INFO L87 Difference]: Start difference. First operand 406 states and 552 transitions. Second operand 11 states. [2020-10-13 14:18:47,092 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-13 14:18:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:49,748 INFO L93 Difference]: Finished difference Result 1150 states and 1628 transitions. [2020-10-13 14:18:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:18:49,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-13 14:18:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:49,750 INFO L225 Difference]: With dead ends: 1150 [2020-10-13 14:18:49,750 INFO L226 Difference]: Without dead ends: 908 [2020-10-13 14:18:49,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:18:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-10-13 14:18:49,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 406. [2020-10-13 14:18:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-13 14:18:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 551 transitions. [2020-10-13 14:18:49,898 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 551 transitions. Word has length 68 [2020-10-13 14:18:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:49,899 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 551 transitions. [2020-10-13 14:18:49,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:18:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 551 transitions. [2020-10-13 14:18:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:18:49,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:49,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:49,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:18:49,900 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash 828430217, now seen corresponding path program 1 times [2020-10-13 14:18:49,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:49,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433275884] [2020-10-13 14:18:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:18:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:18:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3031 [2020-10-13 14:18:52,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:18:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:18:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:18:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:53,429 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:18:53,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:53,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:53,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:53,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:18:53,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:53,456 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 14:18:53,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433275884] [2020-10-13 14:18:53,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:53,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:18:53,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949537183] [2020-10-13 14:18:53,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:18:53,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:53,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:18:53,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:18:53,458 INFO L87 Difference]: Start difference. First operand 406 states and 551 transitions. Second operand 11 states. [2020-10-13 14:18:53,857 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:18:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:55,937 INFO L93 Difference]: Finished difference Result 1106 states and 1577 transitions. [2020-10-13 14:18:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:18:55,939 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-13 14:18:55,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:55,940 INFO L225 Difference]: With dead ends: 1106 [2020-10-13 14:18:55,940 INFO L226 Difference]: Without dead ends: 867 [2020-10-13 14:18:55,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:18:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-10-13 14:18:56,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 397. [2020-10-13 14:18:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-13 14:18:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 537 transitions. [2020-10-13 14:18:56,022 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 537 transitions. Word has length 69 [2020-10-13 14:18:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:56,023 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 537 transitions. [2020-10-13 14:18:56,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:18:56,023 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 537 transitions. [2020-10-13 14:18:56,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:18:56,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:56,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:56,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:18:56,024 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:56,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:56,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1551221307, now seen corresponding path program 1 times [2020-10-13 14:18:56,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:56,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375482556] [2020-10-13 14:18:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:56,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:56,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:56,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:56,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:58,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:00,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:01,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:19:01,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:19:01,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:19:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:19:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:19:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:19:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:01,614 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:19:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:01,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:01,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:01,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:01,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:19:01,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:01,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:01,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:01,660 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 14:19:01,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375482556] [2020-10-13 14:19:01,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:01,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:19:01,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600240447] [2020-10-13 14:19:01,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:19:01,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:01,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:19:01,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:19:01,663 INFO L87 Difference]: Start difference. First operand 397 states and 537 transitions. Second operand 8 states. [2020-10-13 14:19:02,283 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-13 14:19:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:03,869 INFO L93 Difference]: Finished difference Result 766 states and 1072 transitions. [2020-10-13 14:19:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:19:03,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-13 14:19:03,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:03,871 INFO L225 Difference]: With dead ends: 766 [2020-10-13 14:19:03,871 INFO L226 Difference]: Without dead ends: 524 [2020-10-13 14:19:03,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:19:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-10-13 14:19:03,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 397. [2020-10-13 14:19:03,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-13 14:19:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 536 transitions. [2020-10-13 14:19:03,954 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 536 transitions. Word has length 69 [2020-10-13 14:19:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:03,955 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 536 transitions. [2020-10-13 14:19:03,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:19:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 536 transitions. [2020-10-13 14:19:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:19:03,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:03,956 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 14:19:03,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:19:03,956 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:03,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1842298989, now seen corresponding path program 1 times [2020-10-13 14:19:03,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:03,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583818338] [2020-10-13 14:19:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:04,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:05,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:05,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:19:05,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:19:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1693 [2020-10-13 14:19:05,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:19:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:19:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:19:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:06,136 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:19:06,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:06,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:06,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:06,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:19:06,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:06,161 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 14:19:06,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583818338] [2020-10-13 14:19:06,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:06,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:19:06,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294797026] [2020-10-13 14:19:06,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:19:06,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:06,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:19:06,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:19:06,162 INFO L87 Difference]: Start difference. First operand 397 states and 536 transitions. Second operand 12 states. [2020-10-13 14:19:06,593 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:19:09,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:09,846 INFO L93 Difference]: Finished difference Result 1317 states and 1886 transitions. [2020-10-13 14:19:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 14:19:09,847 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-13 14:19:09,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:09,848 INFO L225 Difference]: With dead ends: 1317 [2020-10-13 14:19:09,848 INFO L226 Difference]: Without dead ends: 1081 [2020-10-13 14:19:09,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-10-13 14:19:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-10-13 14:19:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 397. [2020-10-13 14:19:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-13 14:19:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 534 transitions. [2020-10-13 14:19:09,989 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 534 transitions. Word has length 70 [2020-10-13 14:19:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:09,992 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 534 transitions. [2020-10-13 14:19:09,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:19:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 534 transitions. [2020-10-13 14:19:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:19:09,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:09,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:09,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:19:09,993 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:09,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1300532373, now seen corresponding path program 1 times [2020-10-13 14:19:09,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:09,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985671162] [2020-10-13 14:19:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:10,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:10,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:10,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:11,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:14,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:14,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:19:14,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:19:14,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4592 [2020-10-13 14:19:14,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:19:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:19:14,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:19:14,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:15,245 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:19:15,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:15,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:15,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:15,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:15,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:15,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:19:15,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:15,295 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 14:19:15,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985671162] [2020-10-13 14:19:15,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:15,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:19:15,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552250586] [2020-10-13 14:19:15,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:19:15,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:15,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:19:15,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:19:15,298 INFO L87 Difference]: Start difference. First operand 397 states and 534 transitions. Second operand 11 states. [2020-10-13 14:19:15,735 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-13 14:19:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:18,626 INFO L93 Difference]: Finished difference Result 1484 states and 2108 transitions. [2020-10-13 14:19:18,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 14:19:18,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:19:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:18,628 INFO L225 Difference]: With dead ends: 1484 [2020-10-13 14:19:18,628 INFO L226 Difference]: Without dead ends: 1477 [2020-10-13 14:19:18,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2020-10-13 14:19:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-10-13 14:19:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 397. [2020-10-13 14:19:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-13 14:19:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 533 transitions. [2020-10-13 14:19:18,721 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 533 transitions. Word has length 70 [2020-10-13 14:19:18,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:18,721 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 533 transitions. [2020-10-13 14:19:18,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:19:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 533 transitions. [2020-10-13 14:19:18,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:19:18,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:18,722 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 14:19:18,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:19:18,723 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1531805258, now seen corresponding path program 1 times [2020-10-13 14:19:18,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:18,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487817818] [2020-10-13 14:19:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:18,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:20,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:19:20,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:19:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1779 [2020-10-13 14:19:20,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:19:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:19:20,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:19:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:21,016 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:19:21,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:21,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:21,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:21,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:19:21,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:21,043 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 14:19:21,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487817818] [2020-10-13 14:19:21,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:21,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:19:21,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749832276] [2020-10-13 14:19:21,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:19:21,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:21,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:19:21,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:19:21,045 INFO L87 Difference]: Start difference. First operand 397 states and 533 transitions. Second operand 12 states. [2020-10-13 14:19:21,416 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:19:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:22,896 INFO L93 Difference]: Finished difference Result 770 states and 1064 transitions. [2020-10-13 14:19:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:19:22,897 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-13 14:19:22,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:22,898 INFO L225 Difference]: With dead ends: 770 [2020-10-13 14:19:22,899 INFO L226 Difference]: Without dead ends: 766 [2020-10-13 14:19:22,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:19:22,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2020-10-13 14:19:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 403. [2020-10-13 14:19:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-13 14:19:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 541 transitions. [2020-10-13 14:19:22,999 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 541 transitions. Word has length 70 [2020-10-13 14:19:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:22,999 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 541 transitions. [2020-10-13 14:19:23,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:19:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 541 transitions. [2020-10-13 14:19:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:19:23,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:23,000 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 14:19:23,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 14:19:23,001 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:23,001 INFO L82 PathProgramCache]: Analyzing trace with hash -696278331, now seen corresponding path program 1 times [2020-10-13 14:19:23,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:23,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514717717] [2020-10-13 14:19:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:23,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:26,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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