/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.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:17:59,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:17:59,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:17:59,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:17:59,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:17:59,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:17:59,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:17:59,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:17:59,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:17:59,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:17:59,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:17:59,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:17:59,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:17:59,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:17:59,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:17:59,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:17:59,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:17:59,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:17:59,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:17:59,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:17:59,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:17:59,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:17:59,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:17:59,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:17:59,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:17:59,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:17:59,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:17:59,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:17:59,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:17:59,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:17:59,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:17:59,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:17:59,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:17:59,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:17:59,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:17:59,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:17:59,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:17:59,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:17:59,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:17:59,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:17:59,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:17:59,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:18:00,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:18:00,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:18:00,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:18:00,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:18:00,016 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:18:00,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:18:00,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:18:00,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:18:00,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:18:00,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:18:00,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:18:00,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:18:00,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:18:00,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:18:00,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:18:00,019 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:18:00,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:18:00,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:18:00,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:18:00,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:18:00,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:18:00,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:18:00,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:18:00,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:18:00,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:18:00,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:18:00,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:18:00,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:18:00,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:18:00,022 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 14:18:00,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:18:00,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:18:00,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:18:00,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:18:00,316 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:18:00,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:18:00,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc6d40a04/4e58614bf5a2487fbed11c63d2b088af/FLAG3e64c353e [2020-10-13 14:18:01,058 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:18:01,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:18:01,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc6d40a04/4e58614bf5a2487fbed11c63d2b088af/FLAG3e64c353e [2020-10-13 14:18:01,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc6d40a04/4e58614bf5a2487fbed11c63d2b088af [2020-10-13 14:18:01,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:18:01,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:18:01,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:18:01,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:18:01,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:18:01,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:18:01" (1/1) ... [2020-10-13 14:18:01,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1333f6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:01, skipping insertion in model container [2020-10-13 14:18:01,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:18:01" (1/1) ... [2020-10-13 14:18:01,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:18:01,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:18:02,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:18:02,463 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:18:02,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:18:02,905 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:18:02,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02 WrapperNode [2020-10-13 14:18:02,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:18:02,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:18:02,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:18:02,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:18:02,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02" (1/1) ... [2020-10-13 14:18:02,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02" (1/1) ... [2020-10-13 14:18:03,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02" (1/1) ... [2020-10-13 14:18:03,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02" (1/1) ... [2020-10-13 14:18:03,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02" (1/1) ... [2020-10-13 14:18:03,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02" (1/1) ... [2020-10-13 14:18:03,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02" (1/1) ... [2020-10-13 14:18:03,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:18:03,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:18:03,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:18:03,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:18:03,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02" (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 14:18:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:18:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:18:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:18:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:18:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:18:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:18:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:18:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:18:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:18:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:18:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:18:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:18:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:18:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:18:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:18:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:18:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:18:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:18:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:18:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:18:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:18:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:18:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:18:06,332 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:18:06,332 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:18:06,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:18:06 BoogieIcfgContainer [2020-10-13 14:18:06,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:18:06,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:18:06,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:18:06,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:18:06,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:18:01" (1/3) ... [2020-10-13 14:18:06,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d87378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:18:06, skipping insertion in model container [2020-10-13 14:18:06,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:18:02" (2/3) ... [2020-10-13 14:18:06,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d87378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:18:06, skipping insertion in model container [2020-10-13 14:18:06,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:18:06" (3/3) ... [2020-10-13 14:18:06,350 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-13 14:18:06,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:18:06,369 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-10-13 14:18:06,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-10-13 14:18:06,410 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:18:06,410 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:18:06,410 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:18:06,410 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:18:06,410 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:18:06,410 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:18:06,411 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:18:06,411 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:18:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states. [2020-10-13 14:18:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 14:18:06,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:06,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:06,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:06,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:06,481 INFO L82 PathProgramCache]: Analyzing trace with hash 10263618, now seen corresponding path program 1 times [2020-10-13 14:18:06,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:06,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483383970] [2020-10-13 14:18:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:11,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:11,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:11,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 14:18:11,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:18:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:18:11,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:18:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:18:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:18:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:18:12,628 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:18:12,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:12,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:12,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:12,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:12,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:18:12,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:18:12,725 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 14:18:12,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483383970] [2020-10-13 14:18:12,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:12,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:18:12,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818131599] [2020-10-13 14:18:12,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:18:12,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:12,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:18:12,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:18:12,752 INFO L87 Difference]: Start difference. First operand 1116 states. Second operand 7 states. [2020-10-13 14:18:13,291 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-13 14:18:21,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:21,629 INFO L93 Difference]: Finished difference Result 2763 states and 4682 transitions. [2020-10-13 14:18:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:18:21,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-13 14:18:21,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:21,673 INFO L225 Difference]: With dead ends: 2763 [2020-10-13 14:18:21,674 INFO L226 Difference]: Without dead ends: 2422 [2020-10-13 14:18:21,684 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 14:18:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2020-10-13 14:18:21,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1478. [2020-10-13 14:18:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-10-13 14:18:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1968 transitions. [2020-10-13 14:18:21,857 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1968 transitions. Word has length 76 [2020-10-13 14:18:21,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:21,858 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 1968 transitions. [2020-10-13 14:18:21,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:18:21,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1968 transitions. [2020-10-13 14:18:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 14:18:21,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:21,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:21,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:18:21,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:21,866 INFO L82 PathProgramCache]: Analyzing trace with hash 601920604, now seen corresponding path program 1 times [2020-10-13 14:18:21,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:21,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854867326] [2020-10-13 14:18:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:22,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:26,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:26,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 14:18:26,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:18:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 14:18:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:18:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:18:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:18:26,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 14:18:27,477 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:18:27,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:27,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:27,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:27,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:27,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:18:27,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:27,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:27,531 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 14:18:27,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854867326] [2020-10-13 14:18:27,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:27,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:18:27,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26668060] [2020-10-13 14:18:27,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:18:27,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:27,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:18:27,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:18:27,536 INFO L87 Difference]: Start difference. First operand 1478 states and 1968 transitions. Second operand 7 states. [2020-10-13 14:18:28,072 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-13 14:18:34,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:34,592 INFO L93 Difference]: Finished difference Result 3980 states and 5515 transitions. [2020-10-13 14:18:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:18:34,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-13 14:18:34,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:34,611 INFO L225 Difference]: With dead ends: 3980 [2020-10-13 14:18:34,611 INFO L226 Difference]: Without dead ends: 3521 [2020-10-13 14:18:34,614 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 14:18:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2020-10-13 14:18:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 2149. [2020-10-13 14:18:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2149 states. [2020-10-13 14:18:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 2970 transitions. [2020-10-13 14:18:34,722 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 2970 transitions. Word has length 76 [2020-10-13 14:18:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:34,722 INFO L479 AbstractCegarLoop]: Abstraction has 2149 states and 2970 transitions. [2020-10-13 14:18:34,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:18:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 2970 transitions. [2020-10-13 14:18:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 14:18:34,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:34,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:34,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:18:34,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:34,728 INFO L82 PathProgramCache]: Analyzing trace with hash -273216194, now seen corresponding path program 1 times [2020-10-13 14:18:34,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:34,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664299729] [2020-10-13 14:18:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:38,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:39,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:39,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 14:18:39,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:18:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:18:39,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:18:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:18:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 14:18:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:18:40,243 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:18:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:40,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:40,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:40,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:40,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:18:40,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:40,285 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 14:18:40,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664299729] [2020-10-13 14:18:40,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:40,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:18:40,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537629833] [2020-10-13 14:18:40,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:18:40,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:40,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:18:40,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:18:40,288 INFO L87 Difference]: Start difference. First operand 2149 states and 2970 transitions. Second operand 7 states. [2020-10-13 14:18:40,933 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-13 14:18:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:46,511 INFO L93 Difference]: Finished difference Result 6096 states and 8889 transitions. [2020-10-13 14:18:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:18:46,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-13 14:18:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:46,568 INFO L225 Difference]: With dead ends: 6096 [2020-10-13 14:18:46,569 INFO L226 Difference]: Without dead ends: 5348 [2020-10-13 14:18:46,571 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 14:18:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2020-10-13 14:18:46,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 2527. [2020-10-13 14:18:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2527 states. [2020-10-13 14:18:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 3572 transitions. [2020-10-13 14:18:46,690 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 3572 transitions. Word has length 76 [2020-10-13 14:18:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:46,691 INFO L479 AbstractCegarLoop]: Abstraction has 2527 states and 3572 transitions. [2020-10-13 14:18:46,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:18:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 3572 transitions. [2020-10-13 14:18:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 14:18:46,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:46,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:46,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:18:46,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:46,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:46,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2101106649, now seen corresponding path program 1 times [2020-10-13 14:18:46,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:46,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493992089] [2020-10-13 14:18:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:46,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:47,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:51,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:51,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 14:18:51,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:18:51,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:18:51,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:18:51,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:18:51,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:18:51,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:52,333 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:18:52,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:18:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:52,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:18:52,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:18:52,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:18:52,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:18:52,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:18:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:18:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:18:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:18:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:18:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:18:52,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493992089] [2020-10-13 14:18:52,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:18:52,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:18:52,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342545976] [2020-10-13 14:18:52,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:18:52,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:18:52,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:18:52,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:18:52,380 INFO L87 Difference]: Start difference. First operand 2527 states and 3572 transitions. Second operand 7 states. [2020-10-13 14:18:52,867 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-13 14:18:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:18:57,985 INFO L93 Difference]: Finished difference Result 7579 states and 11059 transitions. [2020-10-13 14:18:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:18:57,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-13 14:18:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:18:58,016 INFO L225 Difference]: With dead ends: 7579 [2020-10-13 14:18:58,016 INFO L226 Difference]: Without dead ends: 6859 [2020-10-13 14:18:58,020 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 14:18:58,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2020-10-13 14:18:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 3462. [2020-10-13 14:18:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3462 states. [2020-10-13 14:18:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 4947 transitions. [2020-10-13 14:18:58,230 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 4947 transitions. Word has length 76 [2020-10-13 14:18:58,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:18:58,232 INFO L479 AbstractCegarLoop]: Abstraction has 3462 states and 4947 transitions. [2020-10-13 14:18:58,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:18:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 4947 transitions. [2020-10-13 14:18:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 14:18:58,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:18:58,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:18:58,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:18:58,239 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:18:58,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:18:58,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1634931632, now seen corresponding path program 1 times [2020-10-13 14:18:58,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:18:58,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399496610] [2020-10-13 14:18:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:18:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:18:58,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:18:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:00,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:03,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:03,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 14:19:03,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:19:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:19:03,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:19:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:19:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:19:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:03,836 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:19:03,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:03,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:03,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:03,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:03,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:03,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:19:03,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:03,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:03,887 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 14:19:03,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399496610] [2020-10-13 14:19:03,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:03,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:19:03,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204990700] [2020-10-13 14:19:03,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:19:03,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:03,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:19:03,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:19:03,896 INFO L87 Difference]: Start difference. First operand 3462 states and 4947 transitions. Second operand 7 states. [2020-10-13 14:19:04,388 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-13 14:19:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:08,882 INFO L93 Difference]: Finished difference Result 11052 states and 16457 transitions. [2020-10-13 14:19:08,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:19:08,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-13 14:19:08,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:08,922 INFO L225 Difference]: With dead ends: 11052 [2020-10-13 14:19:08,922 INFO L226 Difference]: Without dead ends: 9696 [2020-10-13 14:19:08,928 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 14:19:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9696 states. [2020-10-13 14:19:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9696 to 4203. [2020-10-13 14:19:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4203 states. [2020-10-13 14:19:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 6083 transitions. [2020-10-13 14:19:09,185 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 6083 transitions. Word has length 76 [2020-10-13 14:19:09,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:09,186 INFO L479 AbstractCegarLoop]: Abstraction has 4203 states and 6083 transitions. [2020-10-13 14:19:09,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:19:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 6083 transitions. [2020-10-13 14:19:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 14:19:09,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:09,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:09,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:19:09,193 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1980788167, now seen corresponding path program 1 times [2020-10-13 14:19:09,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:09,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545318673] [2020-10-13 14:19:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:09,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:10,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:12,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:13,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:13,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:14,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:14,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 14:19:14,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:19:14,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:19:14,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:19:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:19:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:19:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:14,804 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:19:14,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:14,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:14,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:14,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 14:19:14,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:19:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:14,875 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 14:19:14,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545318673] [2020-10-13 14:19:14,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:14,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:19:14,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128652562] [2020-10-13 14:19:14,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:19:14,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:14,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:19:14,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:19:14,877 INFO L87 Difference]: Start difference. First operand 4203 states and 6083 transitions. Second operand 6 states. [2020-10-13 14:19:15,368 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:19:19,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:19,092 INFO L93 Difference]: Finished difference Result 7111 states and 10336 transitions. [2020-10-13 14:19:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:19:19,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-13 14:19:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:19,110 INFO L225 Difference]: With dead ends: 7111 [2020-10-13 14:19:19,110 INFO L226 Difference]: Without dead ends: 5627 [2020-10-13 14:19:19,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:19:19,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5627 states. [2020-10-13 14:19:19,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5627 to 4084. [2020-10-13 14:19:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4084 states. [2020-10-13 14:19:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 5873 transitions. [2020-10-13 14:19:19,443 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 5873 transitions. Word has length 77 [2020-10-13 14:19:19,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:19,444 INFO L479 AbstractCegarLoop]: Abstraction has 4084 states and 5873 transitions. [2020-10-13 14:19:19,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:19:19,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 5873 transitions. [2020-10-13 14:19:19,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 14:19:19,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:19,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:19,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:19:19,449 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:19,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:19,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1181669245, now seen corresponding path program 1 times [2020-10-13 14:19:19,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:19,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052468406] [2020-10-13 14:19:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:19,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:19,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:19,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:24,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 14:19:24,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:19:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:19:24,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:19:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:19:24,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 14:19:24,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:24,955 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:19:24,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:24,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:24,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:24,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:24,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:19:24,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:24,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:24,988 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 14:19:24,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052468406] [2020-10-13 14:19:24,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:24,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:19:24,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407703741] [2020-10-13 14:19:24,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:19:24,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:24,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:19:24,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:19:24,990 INFO L87 Difference]: Start difference. First operand 4084 states and 5873 transitions. Second operand 7 states. [2020-10-13 14:19:25,483 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-13 14:19:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:30,513 INFO L93 Difference]: Finished difference Result 11804 states and 17462 transitions. [2020-10-13 14:19:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:19:30,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-13 14:19:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:30,535 INFO L225 Difference]: With dead ends: 11804 [2020-10-13 14:19:30,535 INFO L226 Difference]: Without dead ends: 9792 [2020-10-13 14:19:30,543 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 14:19:30,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2020-10-13 14:19:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 4055. [2020-10-13 14:19:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4055 states. [2020-10-13 14:19:30,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4055 states to 4055 states and 5834 transitions. [2020-10-13 14:19:30,889 INFO L78 Accepts]: Start accepts. Automaton has 4055 states and 5834 transitions. Word has length 77 [2020-10-13 14:19:30,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:30,890 INFO L479 AbstractCegarLoop]: Abstraction has 4055 states and 5834 transitions. [2020-10-13 14:19:30,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:19:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4055 states and 5834 transitions. [2020-10-13 14:19:30,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 14:19:30,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:30,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:30,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:19:30,894 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:30,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:30,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1839285237, now seen corresponding path program 1 times [2020-10-13 14:19:30,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:30,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521085514] [2020-10-13 14:19:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:30,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:31,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:31,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:32,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:32,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:35,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:35,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 14:19:35,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:19:35,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:19:35,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:19:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:19:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:19:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:36,388 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:19:36,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:36,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:36,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:36,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:36,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:19:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:36,427 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 14:19:36,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521085514] [2020-10-13 14:19:36,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:36,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:19:36,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306905402] [2020-10-13 14:19:36,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:19:36,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:36,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:19:36,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:19:36,429 INFO L87 Difference]: Start difference. First operand 4055 states and 5834 transitions. Second operand 7 states. [2020-10-13 14:19:36,915 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-13 14:19:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:41,370 INFO L93 Difference]: Finished difference Result 11782 states and 17417 transitions. [2020-10-13 14:19:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:19:41,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-13 14:19:41,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:41,392 INFO L225 Difference]: With dead ends: 11782 [2020-10-13 14:19:41,392 INFO L226 Difference]: Without dead ends: 9729 [2020-10-13 14:19:41,400 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 14:19:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2020-10-13 14:19:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 4002. [2020-10-13 14:19:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4002 states. [2020-10-13 14:19:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 5765 transitions. [2020-10-13 14:19:41,740 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 5765 transitions. Word has length 77 [2020-10-13 14:19:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:41,740 INFO L479 AbstractCegarLoop]: Abstraction has 4002 states and 5765 transitions. [2020-10-13 14:19:41,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:19:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 5765 transitions. [2020-10-13 14:19:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 14:19:41,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:41,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:41,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:19:41,744 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:41,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:41,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1606064226, now seen corresponding path program 1 times [2020-10-13 14:19:41,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:41,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165045871] [2020-10-13 14:19:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:41,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:43,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:43,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:43,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:44,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:44,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:46,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:46,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 14:19:46,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:19:46,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:19:46,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:19:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:19:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:19:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:47,229 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:19:47,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:47,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:47,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:47,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:19:47,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:19:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:19:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:47,270 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 14:19:47,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165045871] [2020-10-13 14:19:47,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:47,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:19:47,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495547886] [2020-10-13 14:19:47,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:19:47,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:47,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:19:47,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:19:47,272 INFO L87 Difference]: Start difference. First operand 4002 states and 5765 transitions. Second operand 7 states. [2020-10-13 14:19:47,772 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-13 14:19:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:19:52,122 INFO L93 Difference]: Finished difference Result 11700 states and 17327 transitions. [2020-10-13 14:19:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:19:52,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-13 14:19:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:19:52,137 INFO L225 Difference]: With dead ends: 11700 [2020-10-13 14:19:52,137 INFO L226 Difference]: Without dead ends: 9642 [2020-10-13 14:19:52,144 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 14:19:52,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9642 states. [2020-10-13 14:19:52,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9642 to 3946. [2020-10-13 14:19:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3946 states. [2020-10-13 14:19:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 5693 transitions. [2020-10-13 14:19:52,504 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 5693 transitions. Word has length 77 [2020-10-13 14:19:52,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:19:52,505 INFO L479 AbstractCegarLoop]: Abstraction has 3946 states and 5693 transitions. [2020-10-13 14:19:52,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:19:52,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 5693 transitions. [2020-10-13 14:19:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 14:19:52,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:19:52,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:19:52,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:19:52,509 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:19:52,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:19:52,510 INFO L82 PathProgramCache]: Analyzing trace with hash -290116920, now seen corresponding path program 1 times [2020-10-13 14:19:52,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:19:52,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032509828] [2020-10-13 14:19:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:19:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:53,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:53,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:53,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:54,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:55,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:55,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:57,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:57,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 14:19:57,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:19:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:19:57,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:19:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:19:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:19:57,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:58,019 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:19:58,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:19:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:19:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:19:58,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:19:58,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:19:58,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:19:58,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:19:58,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:19:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:19:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:19:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:19:58,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:19:58,066 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 14:19:58,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032509828] [2020-10-13 14:19:58,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:19:58,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:19:58,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742549366] [2020-10-13 14:19:58,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:19:58,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:19:58,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:19:58,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:19:58,068 INFO L87 Difference]: Start difference. First operand 3946 states and 5693 transitions. Second operand 6 states. [2020-10-13 14:19:58,995 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 309 [2020-10-13 14:20:01,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:01,458 INFO L93 Difference]: Finished difference Result 5925 states and 8687 transitions. [2020-10-13 14:20:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:20:01,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-13 14:20:01,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:01,464 INFO L225 Difference]: With dead ends: 5925 [2020-10-13 14:20:01,464 INFO L226 Difference]: Without dead ends: 3577 [2020-10-13 14:20:01,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:20:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2020-10-13 14:20:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 2317. [2020-10-13 14:20:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-10-13 14:20:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3325 transitions. [2020-10-13 14:20:01,742 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3325 transitions. Word has length 78 [2020-10-13 14:20:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:01,743 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 3325 transitions. [2020-10-13 14:20:01,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:20:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3325 transitions. [2020-10-13 14:20:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 14:20:01,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:01,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:01,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:20:01,747 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:01,747 INFO L82 PathProgramCache]: Analyzing trace with hash -811527719, now seen corresponding path program 1 times [2020-10-13 14:20:01,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:01,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108258641] [2020-10-13 14:20:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:01,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:02,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:03,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:04,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:05,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:05,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:06,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:06,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 14:20:06,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:20:06,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:20:06,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:20:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:20:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:20:06,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:07,260 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:20:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:07,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:07,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:07,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:07,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:20:07,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:07,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:20:07,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:07,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:20:07,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:07,320 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 14:20:07,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108258641] [2020-10-13 14:20:07,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:07,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:20:07,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610206904] [2020-10-13 14:20:07,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:20:07,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:07,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:20:07,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:20:07,322 INFO L87 Difference]: Start difference. First operand 2317 states and 3325 transitions. Second operand 6 states. [2020-10-13 14:20:07,809 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:20:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:10,288 INFO L93 Difference]: Finished difference Result 3434 states and 4937 transitions. [2020-10-13 14:20:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:20:10,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-13 14:20:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:10,294 INFO L225 Difference]: With dead ends: 3434 [2020-10-13 14:20:10,294 INFO L226 Difference]: Without dead ends: 2203 [2020-10-13 14:20:10,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:20:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2020-10-13 14:20:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2145. [2020-10-13 14:20:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2020-10-13 14:20:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3059 transitions. [2020-10-13 14:20:10,534 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3059 transitions. Word has length 78 [2020-10-13 14:20:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:10,535 INFO L479 AbstractCegarLoop]: Abstraction has 2145 states and 3059 transitions. [2020-10-13 14:20:10,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:20:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3059 transitions. [2020-10-13 14:20:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 14:20:10,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:10,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:10,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:20:10,538 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:10,538 INFO L82 PathProgramCache]: Analyzing trace with hash -380817538, now seen corresponding path program 1 times [2020-10-13 14:20:10,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:10,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78746607] [2020-10-13 14:20:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:10,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:10,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:10,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:10,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:11,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:12,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:14,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:15,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 14:20:15,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:20:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:20:15,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:20:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:20:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:20:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:16,076 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:20:16,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:16,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:16,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:16,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:16,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:20:16,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:20:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:20:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:16,119 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 14:20:16,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78746607] [2020-10-13 14:20:16,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:16,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:20:16,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734788535] [2020-10-13 14:20:16,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:20:16,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:16,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:20:16,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:20:16,122 INFO L87 Difference]: Start difference. First operand 2145 states and 3059 transitions. Second operand 6 states. [2020-10-13 14:20:16,603 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:20:18,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:18,770 INFO L93 Difference]: Finished difference Result 3320 states and 4753 transitions. [2020-10-13 14:20:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:20:18,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-13 14:20:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:18,773 INFO L225 Difference]: With dead ends: 3320 [2020-10-13 14:20:18,774 INFO L226 Difference]: Without dead ends: 1997 [2020-10-13 14:20:18,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:20:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-10-13 14:20:18,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1937. [2020-10-13 14:20:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2020-10-13 14:20:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2776 transitions. [2020-10-13 14:20:18,979 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2776 transitions. Word has length 78 [2020-10-13 14:20:18,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:18,979 INFO L479 AbstractCegarLoop]: Abstraction has 1937 states and 2776 transitions. [2020-10-13 14:20:18,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:20:18,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2776 transitions. [2020-10-13 14:20:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 14:20:18,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:18,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:18,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:20:18,982 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:18,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1614015587, now seen corresponding path program 1 times [2020-10-13 14:20:18,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:18,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449553322] [2020-10-13 14:20:18,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:19,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:24,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:24,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 14:20:24,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:20:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:20:24,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:20:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:20:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 14:20:24,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:24,509 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:20:24,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:24,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:24,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:24,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:20:24,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:20:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:20:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:24,560 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 14:20:24,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449553322] [2020-10-13 14:20:24,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:24,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:20:24,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174772187] [2020-10-13 14:20:24,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:20:24,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:24,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:20:24,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:20:24,562 INFO L87 Difference]: Start difference. First operand 1937 states and 2776 transitions. Second operand 6 states. [2020-10-13 14:20:25,051 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-13 14:20:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:27,098 INFO L93 Difference]: Finished difference Result 3089 states and 4453 transitions. [2020-10-13 14:20:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:20:27,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-13 14:20:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:27,101 INFO L225 Difference]: With dead ends: 3089 [2020-10-13 14:20:27,101 INFO L226 Difference]: Without dead ends: 1887 [2020-10-13 14:20:27,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:20:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-10-13 14:20:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1843. [2020-10-13 14:20:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-10-13 14:20:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2648 transitions. [2020-10-13 14:20:27,249 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2648 transitions. Word has length 78 [2020-10-13 14:20:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:27,249 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2648 transitions. [2020-10-13 14:20:27,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:20:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2648 transitions. [2020-10-13 14:20:27,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 14:20:27,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:27,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:27,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:20:27,252 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:27,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:27,252 INFO L82 PathProgramCache]: Analyzing trace with hash 635675827, now seen corresponding path program 1 times [2020-10-13 14:20:27,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:27,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298448717] [2020-10-13 14:20:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:27,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:27,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:28,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:29,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:30,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:32,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:32,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 14:20:32,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:20:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:20:32,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:20:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:20:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:20:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:32,895 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:20:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:32,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:20:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:32,941 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 14:20:32,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298448717] [2020-10-13 14:20:32,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:32,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:20:32,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651874585] [2020-10-13 14:20:32,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:20:32,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:32,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:20:32,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:20:32,943 INFO L87 Difference]: Start difference. First operand 1843 states and 2648 transitions. Second operand 10 states. [2020-10-13 14:20:33,481 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2020-10-13 14:20:35,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:35,790 INFO L93 Difference]: Finished difference Result 4797 states and 7127 transitions. [2020-10-13 14:20:35,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:20:35,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-13 14:20:35,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:35,797 INFO L225 Difference]: With dead ends: 4797 [2020-10-13 14:20:35,798 INFO L226 Difference]: Without dead ends: 3756 [2020-10-13 14:20:35,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:20:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states. [2020-10-13 14:20:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 1764. [2020-10-13 14:20:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-10-13 14:20:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2539 transitions. [2020-10-13 14:20:36,050 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2539 transitions. Word has length 79 [2020-10-13 14:20:36,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:36,050 INFO L479 AbstractCegarLoop]: Abstraction has 1764 states and 2539 transitions. [2020-10-13 14:20:36,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:20:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2539 transitions. [2020-10-13 14:20:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 14:20:36,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:36,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:36,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:20:36,053 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:36,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:36,053 INFO L82 PathProgramCache]: Analyzing trace with hash 697196193, now seen corresponding path program 1 times [2020-10-13 14:20:36,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:36,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353587693] [2020-10-13 14:20:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:36,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:37,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:37,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:38,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:20:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:20:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:41,716 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:20:41,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:41,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:41,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:41,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:41,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:20:41,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:41,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:41,748 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 14:20:41,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353587693] [2020-10-13 14:20:41,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:41,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:20:41,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871934918] [2020-10-13 14:20:41,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:20:41,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:41,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:20:41,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:20:41,750 INFO L87 Difference]: Start difference. First operand 1764 states and 2539 transitions. Second operand 10 states. [2020-10-13 14:20:42,909 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 323 [2020-10-13 14:20:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:46,788 INFO L93 Difference]: Finished difference Result 5972 states and 8850 transitions. [2020-10-13 14:20:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:20:46,788 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-13 14:20:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:46,793 INFO L225 Difference]: With dead ends: 5972 [2020-10-13 14:20:46,793 INFO L226 Difference]: Without dead ends: 4908 [2020-10-13 14:20:46,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:20:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4908 states. [2020-10-13 14:20:46,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4908 to 1764. [2020-10-13 14:20:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-10-13 14:20:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2538 transitions. [2020-10-13 14:20:46,965 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2538 transitions. Word has length 79 [2020-10-13 14:20:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:46,965 INFO L479 AbstractCegarLoop]: Abstraction has 1764 states and 2538 transitions. [2020-10-13 14:20:46,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:20:46,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2538 transitions. [2020-10-13 14:20:46,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 14:20:46,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:46,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:46,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:20:46,967 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:46,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:46,968 INFO L82 PathProgramCache]: Analyzing trace with hash -993014694, now seen corresponding path program 1 times [2020-10-13 14:20:46,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:46,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904532382] [2020-10-13 14:20:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:47,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:52,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:52,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 14:20:52,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:20:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:20:52,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:20:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:20:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:20:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:52,513 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:20:52,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:20:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:52,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:20:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:20:52,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:20:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:20:52,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:20:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:20:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:20:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:20:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:20:52,561 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 14:20:52,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904532382] [2020-10-13 14:20:52,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:20:52,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:20:52,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901878698] [2020-10-13 14:20:52,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:20:52,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:20:52,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:20:52,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:20:52,563 INFO L87 Difference]: Start difference. First operand 1764 states and 2538 transitions. Second operand 7 states. [2020-10-13 14:20:53,072 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-13 14:20:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:20:54,971 INFO L93 Difference]: Finished difference Result 3320 states and 4844 transitions. [2020-10-13 14:20:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:20:54,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-13 14:20:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:20:54,973 INFO L225 Difference]: With dead ends: 3320 [2020-10-13 14:20:54,973 INFO L226 Difference]: Without dead ends: 2058 [2020-10-13 14:20:54,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:20:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2020-10-13 14:20:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1522. [2020-10-13 14:20:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-10-13 14:20:55,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2198 transitions. [2020-10-13 14:20:55,130 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2198 transitions. Word has length 79 [2020-10-13 14:20:55,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:20:55,130 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 2198 transitions. [2020-10-13 14:20:55,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:20:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2198 transitions. [2020-10-13 14:20:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:20:55,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:20:55,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:20:55,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:20:55,132 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:20:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:20:55,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1413827349, now seen corresponding path program 1 times [2020-10-13 14:20:55,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:20:55,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890162213] [2020-10-13 14:20:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:20:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:20:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:56,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:57,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:57,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:57,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:20:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:00,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:00,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:21:00,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:21:00,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:21:00,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:21:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:21:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:21:00,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:00,744 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:21:00,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:00,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:00,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:00,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:21:00,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:00,777 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 14:21:00,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890162213] [2020-10-13 14:21:00,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:00,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:21:00,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472845353] [2020-10-13 14:21:00,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:21:00,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:00,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:21:00,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:21:00,779 INFO L87 Difference]: Start difference. First operand 1522 states and 2198 transitions. Second operand 11 states. [2020-10-13 14:21:01,402 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2020-10-13 14:21:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:06,245 INFO L93 Difference]: Finished difference Result 9308 states and 13844 transitions. [2020-10-13 14:21:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:21:06,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2020-10-13 14:21:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:06,252 INFO L225 Difference]: With dead ends: 9308 [2020-10-13 14:21:06,252 INFO L226 Difference]: Without dead ends: 8334 [2020-10-13 14:21:06,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:21:06,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8334 states. [2020-10-13 14:21:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8334 to 1522. [2020-10-13 14:21:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-10-13 14:21:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2197 transitions. [2020-10-13 14:21:06,466 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2197 transitions. Word has length 81 [2020-10-13 14:21:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:06,467 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 2197 transitions. [2020-10-13 14:21:06,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:21:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2197 transitions. [2020-10-13 14:21:06,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:21:06,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:06,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:06,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:21:06,468 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:06,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:06,468 INFO L82 PathProgramCache]: Analyzing trace with hash -544677158, now seen corresponding path program 1 times [2020-10-13 14:21:06,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:06,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749228793] [2020-10-13 14:21:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:09,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:10,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:11,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:11,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:21:11,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:21:11,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:21:11,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:21:11,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:21:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:21:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:12,106 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:21:12,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:12,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:12,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:12,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:21:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:12,137 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 14:21:12,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749228793] [2020-10-13 14:21:12,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:12,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:21:12,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545697532] [2020-10-13 14:21:12,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:21:12,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:12,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:21:12,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:21:12,139 INFO L87 Difference]: Start difference. First operand 1522 states and 2197 transitions. Second operand 11 states. [2020-10-13 14:21:12,678 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2020-10-13 14:21:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:19,320 INFO L93 Difference]: Finished difference Result 9794 states and 14567 transitions. [2020-10-13 14:21:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:21:19,321 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2020-10-13 14:21:19,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:19,329 INFO L225 Difference]: With dead ends: 9794 [2020-10-13 14:21:19,329 INFO L226 Difference]: Without dead ends: 8798 [2020-10-13 14:21:19,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:21:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8798 states. [2020-10-13 14:21:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8798 to 1522. [2020-10-13 14:21:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-10-13 14:21:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2196 transitions. [2020-10-13 14:21:19,605 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2196 transitions. Word has length 81 [2020-10-13 14:21:19,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:19,606 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 2196 transitions. [2020-10-13 14:21:19,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:21:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2196 transitions. [2020-10-13 14:21:19,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:21:19,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:19,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:19,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:21:19,607 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:19,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:19,608 INFO L82 PathProgramCache]: Analyzing trace with hash 945117876, now seen corresponding path program 1 times [2020-10-13 14:21:19,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:19,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574932427] [2020-10-13 14:21:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:19,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:19,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:19,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:19,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:21,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:24,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:24,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:21:24,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:21:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:21:24,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:21:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:21:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 14:21:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:25,189 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:21:25,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:25,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:25,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:25,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:21:25,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:25,223 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 14:21:25,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574932427] [2020-10-13 14:21:25,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:25,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:21:25,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539729518] [2020-10-13 14:21:25,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:21:25,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:25,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:21:25,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:21:25,225 INFO L87 Difference]: Start difference. First operand 1522 states and 2196 transitions. Second operand 11 states. [2020-10-13 14:21:25,757 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-13 14:21:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:29,386 INFO L93 Difference]: Finished difference Result 4204 states and 6214 transitions. [2020-10-13 14:21:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:21:29,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2020-10-13 14:21:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:29,389 INFO L225 Difference]: With dead ends: 4204 [2020-10-13 14:21:29,389 INFO L226 Difference]: Without dead ends: 3120 [2020-10-13 14:21:29,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:21:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-10-13 14:21:29,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 1526. [2020-10-13 14:21:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1526 states. [2020-10-13 14:21:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2200 transitions. [2020-10-13 14:21:29,600 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2200 transitions. Word has length 81 [2020-10-13 14:21:29,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:29,600 INFO L479 AbstractCegarLoop]: Abstraction has 1526 states and 2200 transitions. [2020-10-13 14:21:29,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:21:29,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2200 transitions. [2020-10-13 14:21:29,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:21:29,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:29,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:29,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:21:29,601 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1509278948, now seen corresponding path program 1 times [2020-10-13 14:21:29,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:29,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116034016] [2020-10-13 14:21:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:29,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:31,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:32,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:33,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:34,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:34,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:21:34,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:21:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:21:34,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:21:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:21:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:21:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:35,192 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:21:35,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:35,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:35,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:35,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:21:35,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:35,223 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 14:21:35,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116034016] [2020-10-13 14:21:35,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:35,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:21:35,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892955307] [2020-10-13 14:21:35,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:21:35,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:35,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:21:35,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:21:35,225 INFO L87 Difference]: Start difference. First operand 1526 states and 2200 transitions. Second operand 11 states. [2020-10-13 14:21:35,826 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2020-10-13 14:21:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:41,318 INFO L93 Difference]: Finished difference Result 11189 states and 16605 transitions. [2020-10-13 14:21:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:21:41,318 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2020-10-13 14:21:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:41,326 INFO L225 Difference]: With dead ends: 11189 [2020-10-13 14:21:41,326 INFO L226 Difference]: Without dead ends: 10213 [2020-10-13 14:21:41,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:21:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10213 states. [2020-10-13 14:21:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10213 to 1526. [2020-10-13 14:21:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1526 states. [2020-10-13 14:21:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2196 transitions. [2020-10-13 14:21:41,657 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2196 transitions. Word has length 81 [2020-10-13 14:21:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:41,657 INFO L479 AbstractCegarLoop]: Abstraction has 1526 states and 2196 transitions. [2020-10-13 14:21:41,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:21:41,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2196 transitions. [2020-10-13 14:21:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 14:21:41,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:41,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:41,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:21:41,658 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:41,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1407974068, now seen corresponding path program 1 times [2020-10-13 14:21:41,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:41,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355530935] [2020-10-13 14:21:41,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:41,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:41,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:41,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:42,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:43,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:43,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:46,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:46,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 14:21:46,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:21:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:21:46,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:21:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:21:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:21:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:47,191 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-13 14:21:47,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:21:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:47,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:47,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:21:47,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:21:47,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:21:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:21:47,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:21:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:21:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:21:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:21:47,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:21:47,230 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 14:21:47,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355530935] [2020-10-13 14:21:47,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:21:47,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:21:47,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274286048] [2020-10-13 14:21:47,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:21:47,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:21:47,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:21:47,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:21:47,232 INFO L87 Difference]: Start difference. First operand 1526 states and 2196 transitions. Second operand 8 states. [2020-10-13 14:21:47,724 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-13 14:21:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:21:49,498 INFO L93 Difference]: Finished difference Result 3012 states and 4442 transitions. [2020-10-13 14:21:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:21:49,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-13 14:21:49,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:21:49,501 INFO L225 Difference]: With dead ends: 3012 [2020-10-13 14:21:49,501 INFO L226 Difference]: Without dead ends: 1854 [2020-10-13 14:21:49,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:21:49,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-10-13 14:21:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1330. [2020-10-13 14:21:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-10-13 14:21:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1930 transitions. [2020-10-13 14:21:49,750 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1930 transitions. Word has length 81 [2020-10-13 14:21:49,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:21:49,751 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1930 transitions. [2020-10-13 14:21:49,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:21:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1930 transitions. [2020-10-13 14:21:49,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 14:21:49,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:21:49,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:21:49,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:21:49,752 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:21:49,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:21:49,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2066858189, now seen corresponding path program 1 times [2020-10-13 14:21:49,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:21:49,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327716974] [2020-10-13 14:21:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:21:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:21:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:21:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking...