/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:01:00,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:01:00,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:01:00,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:01:00,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:01:00,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:01:00,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:01:00,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:01:00,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:01:00,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:01:00,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:01:00,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:01:00,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:01:00,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:01:00,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:01:00,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:01:00,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:01:00,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:01:00,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:01:00,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:01:00,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:01:00,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:01:00,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:01:00,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:01:00,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:01:00,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:01:00,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:01:01,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:01:01,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:01:01,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:01:01,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:01:01,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:01:01,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:01:01,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:01:01,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:01:01,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:01:01,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:01:01,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:01:01,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:01:01,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:01:01,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:01:01,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:01:01,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:01:01,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:01:01,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:01:01,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:01:01,031 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:01:01,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:01:01,031 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:01:01,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:01:01,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:01:01,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:01:01,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:01:01,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:01:01,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:01:01,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:01:01,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:01:01,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:01:01,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:01:01,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:01:01,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:01:01,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:01:01,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:01:01,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:01:01,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:01:01,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:01:01,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:01:01,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:01:01,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:01:01,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:01:01,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:01:01,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:01:01,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:01:01,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:01:01,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:01:01,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:01:01,360 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:01:01,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:01:01,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/853df3137/258820956a1d4c52b7a1dbecb73f6b92/FLAG1324e0e4d [2020-10-13 15:01:02,130 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:01:02,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:01:02,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/853df3137/258820956a1d4c52b7a1dbecb73f6b92/FLAG1324e0e4d [2020-10-13 15:01:02,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/853df3137/258820956a1d4c52b7a1dbecb73f6b92 [2020-10-13 15:01:02,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:01:02,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:01:02,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:01:02,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:01:02,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:01:02,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:01:02" (1/1) ... [2020-10-13 15:01:02,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0b5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:02, skipping insertion in model container [2020-10-13 15:01:02,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:01:02" (1/1) ... [2020-10-13 15:01:02,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:01:02,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:01:03,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:01:03,951 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:01:04,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:01:05,021 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:01:05,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05 WrapperNode [2020-10-13 15:01:05,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:01:05,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:01:05,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:01:05,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:01:05,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05" (1/1) ... [2020-10-13 15:01:05,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05" (1/1) ... [2020-10-13 15:01:05,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05" (1/1) ... [2020-10-13 15:01:05,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05" (1/1) ... [2020-10-13 15:01:05,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05" (1/1) ... [2020-10-13 15:01:05,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05" (1/1) ... [2020-10-13 15:01:05,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05" (1/1) ... [2020-10-13 15:01:05,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:01:05,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:01:05,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:01:05,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:01:05,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:01:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:01:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:01:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:01:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:01:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:01:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:01:05,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 15:01:05,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:01:05,300 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:01:05,300 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:01:05,300 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:01:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:01:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:01:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:01:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:01:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:01:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:01:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:01:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:01:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:01:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:01:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:01:08,414 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:01:08,415 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:01:08,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:01:08 BoogieIcfgContainer [2020-10-13 15:01:08,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:01:08,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:01:08,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:01:08,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:01:08,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:01:02" (1/3) ... [2020-10-13 15:01:08,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e99d184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:01:08, skipping insertion in model container [2020-10-13 15:01:08,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:01:05" (2/3) ... [2020-10-13 15:01:08,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e99d184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:01:08, skipping insertion in model container [2020-10-13 15:01:08,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:01:08" (3/3) ... [2020-10-13 15:01:08,434 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:01:08,445 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:01:08,453 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-13 15:01:08,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-13 15:01:08,501 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:01:08,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:01:08,501 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:01:08,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:01:08,551 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:01:08,551 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:01:08,551 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:01:08,551 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:01:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states. [2020-10-13 15:01:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 15:01:08,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:08,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:08,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:08,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:08,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1144283241, now seen corresponding path program 1 times [2020-10-13 15:01:08,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:08,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407421088] [2020-10-13 15:01:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:11,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:12,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:14,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:14,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 15:01:14,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 15:01:14,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:01:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 15:01:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 15:01:15,592 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:01:15,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:15,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:15,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:15,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:15,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 15:01:15,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:15,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:15,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407421088] [2020-10-13 15:01:15,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:15,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:15,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419606442] [2020-10-13 15:01:15,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:15,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:15,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:15,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:15,851 INFO L87 Difference]: Start difference. First operand 1004 states. Second operand 5 states. [2020-10-13 15:01:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:29,109 INFO L93 Difference]: Finished difference Result 2923 states and 5225 transitions. [2020-10-13 15:01:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:01:29,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-13 15:01:29,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:29,142 INFO L225 Difference]: With dead ends: 2923 [2020-10-13 15:01:29,142 INFO L226 Difference]: Without dead ends: 1962 [2020-10-13 15:01:29,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2020-10-13 15:01:29,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1861. [2020-10-13 15:01:29,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2020-10-13 15:01:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2855 transitions. [2020-10-13 15:01:29,342 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2855 transitions. Word has length 312 [2020-10-13 15:01:29,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:29,343 INFO L479 AbstractCegarLoop]: Abstraction has 1861 states and 2855 transitions. [2020-10-13 15:01:29,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2855 transitions. [2020-10-13 15:01:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 15:01:29,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:29,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:29,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:01:29,352 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:29,352 INFO L82 PathProgramCache]: Analyzing trace with hash -301023845, now seen corresponding path program 1 times [2020-10-13 15:01:29,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:29,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606776766] [2020-10-13 15:01:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:31,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:31,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:32,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:34,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 15:01:34,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:34,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-13 15:01:34,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:34,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:34,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:01:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 15:01:34,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:01:35,682 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:01:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:35,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:35,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:35,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:35,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:35,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 15:01:35,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:35,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:01:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:35,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606776766] [2020-10-13 15:01:35,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:35,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:35,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802349212] [2020-10-13 15:01:35,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:35,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:35,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:35,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:35,965 INFO L87 Difference]: Start difference. First operand 1861 states and 2855 transitions. Second operand 5 states. [2020-10-13 15:01:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:46,788 INFO L93 Difference]: Finished difference Result 5494 states and 8418 transitions. [2020-10-13 15:01:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:46,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-13 15:01:46,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:46,810 INFO L225 Difference]: With dead ends: 5494 [2020-10-13 15:01:46,811 INFO L226 Difference]: Without dead ends: 3649 [2020-10-13 15:01:46,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:46,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2020-10-13 15:01:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 3552. [2020-10-13 15:01:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3552 states. [2020-10-13 15:01:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 5437 transitions. [2020-10-13 15:01:46,982 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 5437 transitions. Word has length 314 [2020-10-13 15:01:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:46,984 INFO L479 AbstractCegarLoop]: Abstraction has 3552 states and 5437 transitions. [2020-10-13 15:01:46,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 5437 transitions. [2020-10-13 15:01:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 15:01:47,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:47,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:47,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:01:47,004 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:47,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:47,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1314502682, now seen corresponding path program 1 times [2020-10-13 15:01:47,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:47,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181213307] [2020-10-13 15:01:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:52,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:52,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 15:01:52,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:01:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:01:52,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:01:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:01:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:01:52,945 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:01:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:52,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:52,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:52,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:52,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:01:52,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:52,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:52,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:52,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:53,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181213307] [2020-10-13 15:01:53,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:53,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:53,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693641312] [2020-10-13 15:01:53,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:53,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:53,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:53,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:53,078 INFO L87 Difference]: Start difference. First operand 3552 states and 5437 transitions. Second operand 4 states. [2020-10-13 15:02:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:05,606 INFO L93 Difference]: Finished difference Result 10591 states and 16205 transitions. [2020-10-13 15:02:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:02:05,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2020-10-13 15:02:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:05,643 INFO L225 Difference]: With dead ends: 10591 [2020-10-13 15:02:05,643 INFO L226 Difference]: Without dead ends: 7072 [2020-10-13 15:02:05,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2020-10-13 15:02:05,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 3566. [2020-10-13 15:02:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3566 states. [2020-10-13 15:02:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 5454 transitions. [2020-10-13 15:02:05,863 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 5454 transitions. Word has length 316 [2020-10-13 15:02:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:05,863 INFO L479 AbstractCegarLoop]: Abstraction has 3566 states and 5454 transitions. [2020-10-13 15:02:05,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:02:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 5454 transitions. [2020-10-13 15:02:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-13 15:02:05,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:05,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:05,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:02:05,879 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:05,880 INFO L82 PathProgramCache]: Analyzing trace with hash 9012664, now seen corresponding path program 1 times [2020-10-13 15:02:05,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:05,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041454683] [2020-10-13 15:02:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:06,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:10,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:10,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 15:02:10,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:02:10,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 15:02:10,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:02:10,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 15:02:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:11,909 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:02:11,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:11,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:11,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:11,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:11,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:02:11,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:12,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041454683] [2020-10-13 15:02:12,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:12,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:12,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774392418] [2020-10-13 15:02:12,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:12,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:12,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:12,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:12,104 INFO L87 Difference]: Start difference. First operand 3566 states and 5454 transitions. Second operand 5 states. [2020-10-13 15:02:21,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:21,796 INFO L93 Difference]: Finished difference Result 10489 states and 16020 transitions. [2020-10-13 15:02:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:21,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-13 15:02:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:21,825 INFO L225 Difference]: With dead ends: 10489 [2020-10-13 15:02:21,825 INFO L226 Difference]: Without dead ends: 6968 [2020-10-13 15:02:21,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6968 states. [2020-10-13 15:02:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6968 to 6894. [2020-10-13 15:02:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6894 states. [2020-10-13 15:02:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6894 states to 6894 states and 10484 transitions. [2020-10-13 15:02:22,172 INFO L78 Accepts]: Start accepts. Automaton has 6894 states and 10484 transitions. Word has length 318 [2020-10-13 15:02:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:22,174 INFO L479 AbstractCegarLoop]: Abstraction has 6894 states and 10484 transitions. [2020-10-13 15:02:22,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 6894 states and 10484 transitions. [2020-10-13 15:02:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-13 15:02:22,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:22,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:22,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:02:22,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:22,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:22,192 INFO L82 PathProgramCache]: Analyzing trace with hash -563576663, now seen corresponding path program 1 times [2020-10-13 15:02:22,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:22,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862909808] [2020-10-13 15:02:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 15:02:27,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:02:27,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 15:02:27,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:27,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:02:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:02:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:28,117 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:02:28,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:28,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:28,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:28,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:02:28,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:28,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862909808] [2020-10-13 15:02:28,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:28,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:28,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622837299] [2020-10-13 15:02:28,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:28,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:28,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:28,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:28,232 INFO L87 Difference]: Start difference. First operand 6894 states and 10484 transitions. Second operand 5 states. [2020-10-13 15:02:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:37,403 INFO L93 Difference]: Finished difference Result 19188 states and 29021 transitions. [2020-10-13 15:02:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:37,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-13 15:02:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:37,450 INFO L225 Difference]: With dead ends: 19188 [2020-10-13 15:02:37,450 INFO L226 Difference]: Without dead ends: 12834 [2020-10-13 15:02:37,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:37,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2020-10-13 15:02:37,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 7282. [2020-10-13 15:02:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7282 states. [2020-10-13 15:02:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7282 states to 7282 states and 11146 transitions. [2020-10-13 15:02:37,995 INFO L78 Accepts]: Start accepts. Automaton has 7282 states and 11146 transitions. Word has length 318 [2020-10-13 15:02:37,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:37,996 INFO L479 AbstractCegarLoop]: Abstraction has 7282 states and 11146 transitions. [2020-10-13 15:02:37,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 7282 states and 11146 transitions. [2020-10-13 15:02:38,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 15:02:38,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:38,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:38,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:02:38,016 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:38,017 INFO L82 PathProgramCache]: Analyzing trace with hash 320179971, now seen corresponding path program 1 times [2020-10-13 15:02:38,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:38,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622237299] [2020-10-13 15:02:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:38,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:38,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:38,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:38,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:38,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:38,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:39,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:40,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:43,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 15:02:43,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:02:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:02:43,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:02:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:02:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:43,795 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:02:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:43,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:43,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:43,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:02:43,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:43,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:43,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:43,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:43,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:43,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622237299] [2020-10-13 15:02:43,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:43,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:43,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028966825] [2020-10-13 15:02:43,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:43,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:43,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:43,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:43,892 INFO L87 Difference]: Start difference. First operand 7282 states and 11146 transitions. Second operand 5 states. [2020-10-13 15:02:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:54,309 INFO L93 Difference]: Finished difference Result 20047 states and 30471 transitions. [2020-10-13 15:02:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:54,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-13 15:02:54,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:54,343 INFO L225 Difference]: With dead ends: 20047 [2020-10-13 15:02:54,344 INFO L226 Difference]: Without dead ends: 13616 [2020-10-13 15:02:54,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13616 states. [2020-10-13 15:02:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13616 to 8092. [2020-10-13 15:02:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8092 states. [2020-10-13 15:02:54,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8092 states to 8092 states and 12522 transitions. [2020-10-13 15:02:54,863 INFO L78 Accepts]: Start accepts. Automaton has 8092 states and 12522 transitions. Word has length 320 [2020-10-13 15:02:54,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:54,863 INFO L479 AbstractCegarLoop]: Abstraction has 8092 states and 12522 transitions. [2020-10-13 15:02:54,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:54,863 INFO L276 IsEmpty]: Start isEmpty. Operand 8092 states and 12522 transitions. [2020-10-13 15:02:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 15:02:54,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:54,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:54,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:02:54,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:54,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2061369243, now seen corresponding path program 1 times [2020-10-13 15:02:54,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:54,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889127433] [2020-10-13 15:02:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:59,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 15:02:59,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:02:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 15:02:59,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:02:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 15:02:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:02:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:00,755 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:03:00,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:00,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:00,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:03:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:00,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889127433] [2020-10-13 15:03:00,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:00,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:03:00,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37993080] [2020-10-13 15:03:00,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:03:00,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:00,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:03:00,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:00,841 INFO L87 Difference]: Start difference. First operand 8092 states and 12522 transitions. Second operand 4 states. [2020-10-13 15:03:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:07,605 INFO L93 Difference]: Finished difference Result 20961 states and 31793 transitions. [2020-10-13 15:03:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:03:07,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-10-13 15:03:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:07,640 INFO L225 Difference]: With dead ends: 20961 [2020-10-13 15:03:07,640 INFO L226 Difference]: Without dead ends: 14561 [2020-10-13 15:03:07,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14561 states. [2020-10-13 15:03:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14561 to 8289. [2020-10-13 15:03:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8289 states. [2020-10-13 15:03:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8289 states to 8289 states and 12774 transitions. [2020-10-13 15:03:08,246 INFO L78 Accepts]: Start accepts. Automaton has 8289 states and 12774 transitions. Word has length 322 [2020-10-13 15:03:08,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:08,246 INFO L479 AbstractCegarLoop]: Abstraction has 8289 states and 12774 transitions. [2020-10-13 15:03:08,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:03:08,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8289 states and 12774 transitions. [2020-10-13 15:03:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 15:03:08,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:08,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:08,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:03:08,263 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash 218486368, now seen corresponding path program 1 times [2020-10-13 15:03:08,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:08,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221103175] [2020-10-13 15:03:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:08,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:08,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:08,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:08,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:13,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:13,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 15:03:13,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 15:03:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 15:03:13,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:03:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:03:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:14,061 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:03:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:14,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:14,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:14,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:03:14,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:14,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221103175] [2020-10-13 15:03:14,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:14,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:14,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489016388] [2020-10-13 15:03:14,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:14,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:14,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:14,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:14,156 INFO L87 Difference]: Start difference. First operand 8289 states and 12774 transitions. Second operand 5 states. [2020-10-13 15:03:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:27,104 INFO L93 Difference]: Finished difference Result 21738 states and 33204 transitions. [2020-10-13 15:03:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:27,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-13 15:03:27,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:27,126 INFO L225 Difference]: With dead ends: 21738 [2020-10-13 15:03:27,127 INFO L226 Difference]: Without dead ends: 15226 [2020-10-13 15:03:27,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:03:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15226 states. [2020-10-13 15:03:27,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15226 to 9682. [2020-10-13 15:03:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9682 states. [2020-10-13 15:03:27,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9682 states to 9682 states and 15122 transitions. [2020-10-13 15:03:27,738 INFO L78 Accepts]: Start accepts. Automaton has 9682 states and 15122 transitions. Word has length 322 [2020-10-13 15:03:27,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:27,738 INFO L479 AbstractCegarLoop]: Abstraction has 9682 states and 15122 transitions. [2020-10-13 15:03:27,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:27,738 INFO L276 IsEmpty]: Start isEmpty. Operand 9682 states and 15122 transitions. [2020-10-13 15:03:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 15:03:27,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:27,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:27,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:03:27,755 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:27,755 INFO L82 PathProgramCache]: Analyzing trace with hash -143411509, now seen corresponding path program 1 times [2020-10-13 15:03:27,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:27,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027355289] [2020-10-13 15:03:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:27,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:27,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:31,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:32,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:32,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 15:03:32,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:03:32,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 15:03:32,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:03:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 15:03:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:03:32,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:33,546 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:03:33,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:33,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:33,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:33,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:33,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:03:33,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:33,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027355289] [2020-10-13 15:03:33,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:33,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:03:33,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768495743] [2020-10-13 15:03:33,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:03:33,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:33,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:03:33,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:33,631 INFO L87 Difference]: Start difference. First operand 9682 states and 15122 transitions. Second operand 4 states. [2020-10-13 15:03:42,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:42,152 INFO L93 Difference]: Finished difference Result 16679 states and 25781 transitions. [2020-10-13 15:03:42,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:03:42,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-10-13 15:03:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:42,171 INFO L225 Difference]: With dead ends: 16679 [2020-10-13 15:03:42,171 INFO L226 Difference]: Without dead ends: 11845 [2020-10-13 15:03:42,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:42,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11845 states. [2020-10-13 15:03:42,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11845 to 10590. [2020-10-13 15:03:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10590 states. [2020-10-13 15:03:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 16611 transitions. [2020-10-13 15:03:42,836 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 16611 transitions. Word has length 322 [2020-10-13 15:03:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:42,836 INFO L479 AbstractCegarLoop]: Abstraction has 10590 states and 16611 transitions. [2020-10-13 15:03:42,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:03:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 16611 transitions. [2020-10-13 15:03:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 15:03:42,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:42,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:42,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:03:42,848 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:42,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1944754639, now seen corresponding path program 1 times [2020-10-13 15:03:42,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:42,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348122215] [2020-10-13 15:03:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:46,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:47,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:47,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 15:03:47,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:03:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:03:47,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:03:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 15:03:47,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:48,725 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:03:48,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:48,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:48,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:48,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:48,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:03:48,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:48,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:48,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348122215] [2020-10-13 15:03:48,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:48,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:48,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167784049] [2020-10-13 15:03:48,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:48,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:48,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:48,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:48,854 INFO L87 Difference]: Start difference. First operand 10590 states and 16611 transitions. Second operand 5 states. [2020-10-13 15:04:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:01,029 INFO L93 Difference]: Finished difference Result 29849 states and 46535 transitions. [2020-10-13 15:04:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:04:01,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-13 15:04:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:01,049 INFO L225 Difference]: With dead ends: 29849 [2020-10-13 15:04:01,049 INFO L226 Difference]: Without dead ends: 20219 [2020-10-13 15:04:01,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:04:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2020-10-13 15:04:02,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 20089. [2020-10-13 15:04:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20089 states. [2020-10-13 15:04:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20089 states to 20089 states and 31243 transitions. [2020-10-13 15:04:02,255 INFO L78 Accepts]: Start accepts. Automaton has 20089 states and 31243 transitions. Word has length 324 [2020-10-13 15:04:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:02,255 INFO L479 AbstractCegarLoop]: Abstraction has 20089 states and 31243 transitions. [2020-10-13 15:04:02,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:04:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 20089 states and 31243 transitions. [2020-10-13 15:04:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 15:04:02,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:02,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:02,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:04:02,277 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash -2006978737, now seen corresponding path program 1 times [2020-10-13 15:04:02,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:02,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759180340] [2020-10-13 15:04:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:02,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:03,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:03,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:07,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 15:04:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:04:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 15:04:07,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:04:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:04:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:04:07,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:04:08,091 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:04:08,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:08,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:08,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:08,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:04:08,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:08,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759180340] [2020-10-13 15:04:08,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:08,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:04:08,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270870039] [2020-10-13 15:04:08,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:04:08,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:08,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:04:08,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:08,169 INFO L87 Difference]: Start difference. First operand 20089 states and 31243 transitions. Second operand 4 states. [2020-10-13 15:04:22,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:22,710 INFO L93 Difference]: Finished difference Result 58742 states and 91069 transitions. [2020-10-13 15:04:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:04:22,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-13 15:04:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:22,750 INFO L225 Difference]: With dead ends: 58742 [2020-10-13 15:04:22,750 INFO L226 Difference]: Without dead ends: 39483 [2020-10-13 15:04:22,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39483 states. [2020-10-13 15:04:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39483 to 20515. [2020-10-13 15:04:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20515 states. [2020-10-13 15:04:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20515 states to 20515 states and 31886 transitions. [2020-10-13 15:04:25,095 INFO L78 Accepts]: Start accepts. Automaton has 20515 states and 31886 transitions. Word has length 326 [2020-10-13 15:04:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:25,095 INFO L479 AbstractCegarLoop]: Abstraction has 20515 states and 31886 transitions. [2020-10-13 15:04:25,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:04:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 20515 states and 31886 transitions. [2020-10-13 15:04:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 15:04:25,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:25,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:25,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:04:25,116 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:25,116 INFO L82 PathProgramCache]: Analyzing trace with hash 581977162, now seen corresponding path program 1 times [2020-10-13 15:04:25,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:25,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56338502] [2020-10-13 15:04:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:25,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:26,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:30,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 15:04:30,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 15:04:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:04:30,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:04:30,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:04:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 15:04:30,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:30,906 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:04:30,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:30,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:30,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:30,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:04:30,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:30,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:30,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:31,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56338502] [2020-10-13 15:04:31,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:31,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:04:31,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379562658] [2020-10-13 15:04:31,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:04:31,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:31,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:04:31,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:31,020 INFO L87 Difference]: Start difference. First operand 20515 states and 31886 transitions. Second operand 4 states.