/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=BIGGEST --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_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:20:09,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:20:09,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:20:09,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:20:09,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:20:09,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:20:09,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:20:09,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:20:09,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:20:09,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:20:09,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:20:09,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:20:09,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:20:09,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:20:09,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:20:09,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:20:09,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:20:09,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:20:09,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:20:09,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:20:09,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:20:09,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:20:09,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:20:09,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:20:09,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:20:09,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:20:09,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:20:09,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:20:09,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:20:09,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:20:09,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:20:09,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:20:09,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:20:09,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:20:09,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:20:09,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:20:09,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:20:09,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:20:09,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:20:09,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:20:09,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:20:09,963 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 [2020-10-12 19:20:09,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:20:09,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:20:09,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:20:09,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:20:09,987 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:20:09,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:20:09,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:20:09,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:20:09,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:20:09,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:20:09,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:20:09,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:20:09,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:20:09,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:20:09,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:20:09,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:20:09,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:20:09,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:20:09,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:20:09,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:20:09,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:20:09,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:20:09,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:20:09,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:20:09,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:20:09,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:20:09,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:20:09,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:20:09,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:20:09,992 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:20:10,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:20:10,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:20:10,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:20:10,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:20:10,297 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:20:10,298 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:20:10,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9baf60e0/5728135a973640b2af504da4dc092a0f/FLAGb806fc361 [2020-10-12 19:20:11,045 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:20:11,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:20:11,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9baf60e0/5728135a973640b2af504da4dc092a0f/FLAGb806fc361 [2020-10-12 19:20:11,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9baf60e0/5728135a973640b2af504da4dc092a0f [2020-10-12 19:20:11,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:20:11,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:20:11,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:20:11,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:20:11,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:20:11,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:20:11" (1/1) ... [2020-10-12 19:20:11,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e58bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:11, skipping insertion in model container [2020-10-12 19:20:11,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:20:11" (1/1) ... [2020-10-12 19:20:11,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:20:11,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:20:12,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:20:12,893 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:20:13,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:20:13,660 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:20:13,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13 WrapperNode [2020-10-12 19:20:13,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:20:13,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:20:13,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:20:13,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:20:13,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13" (1/1) ... [2020-10-12 19:20:13,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13" (1/1) ... [2020-10-12 19:20:13,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13" (1/1) ... [2020-10-12 19:20:13,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13" (1/1) ... [2020-10-12 19:20:13,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13" (1/1) ... [2020-10-12 19:20:13,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13" (1/1) ... [2020-10-12 19:20:13,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13" (1/1) ... [2020-10-12 19:20:13,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:20:13,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:20:13,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:20:13,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:20:13,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13" (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 [2020-10-12 19:20:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:20:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:20:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:20:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:20:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:20:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:20:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:20:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:20:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:20:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:20:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:20:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:20:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:20:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:20:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:20:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:20:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:20:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:20:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:20:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:20:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:20:16,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:20:16,891 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:20:16,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:20:16 BoogieIcfgContainer [2020-10-12 19:20:16,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:20:16,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:20:16,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:20:16,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:20:16,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:20:11" (1/3) ... [2020-10-12 19:20:16,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6eb88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:20:16, skipping insertion in model container [2020-10-12 19:20:16,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:13" (2/3) ... [2020-10-12 19:20:16,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6eb88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:20:16, skipping insertion in model container [2020-10-12 19:20:16,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:20:16" (3/3) ... [2020-10-12 19:20:16,910 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 19:20:16,920 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:20:16,930 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-12 19:20:16,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-12 19:20:16,977 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:20:16,977 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:20:16,977 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:20:16,977 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:20:16,978 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:20:16,978 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:20:16,978 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:20:16,978 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:20:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states. [2020-10-12 19:20:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-12 19:20:17,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:17,050 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] [2020-10-12 19:20:17,051 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]=== [2020-10-12 19:20:17,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:17,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1256923188, now seen corresponding path program 1 times [2020-10-12 19:20:17,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:17,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427543331] [2020-10-12 19:20:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:18,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:19,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:20,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:20,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:21,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:21,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:23,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:23,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-12 19:20:23,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:20:23,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-12 19:20:23,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:20:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:20:23,971 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:20:23,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:24,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:24,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:24,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:24,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:20:24,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:24,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:20:24,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427543331] [2020-10-12 19:20:24,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:24,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:24,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812923310] [2020-10-12 19:20:24,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:24,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:24,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:24,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:24,207 INFO L87 Difference]: Start difference. First operand 894 states. Second operand 5 states. [2020-10-12 19:20:36,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:36,172 INFO L93 Difference]: Finished difference Result 2601 states and 4702 transitions. [2020-10-12 19:20:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:20:36,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-12 19:20:36,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:36,204 INFO L225 Difference]: With dead ends: 2601 [2020-10-12 19:20:36,204 INFO L226 Difference]: Without dead ends: 1750 [2020-10-12 19:20:36,214 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 [2020-10-12 19:20:36,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2020-10-12 19:20:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1659. [2020-10-12 19:20:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-10-12 19:20:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2538 transitions. [2020-10-12 19:20:36,416 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2538 transitions. Word has length 298 [2020-10-12 19:20:36,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:36,417 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 2538 transitions. [2020-10-12 19:20:36,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2538 transitions. [2020-10-12 19:20:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-12 19:20:36,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:36,426 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] [2020-10-12 19:20:36,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:20:36,427 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]=== [2020-10-12 19:20:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:36,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1877318935, now seen corresponding path program 1 times [2020-10-12 19:20:36,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:36,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570458636] [2020-10-12 19:20:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:37,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:37,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:40,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:41,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:41,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-12 19:20:41,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:20:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 19:20:41,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 19:20:41,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:20:42,377 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:20:42,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:42,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:42,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:42,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 19:20:42,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:42,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:20:42,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570458636] [2020-10-12 19:20:42,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:42,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:42,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351942560] [2020-10-12 19:20:42,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:42,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:42,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:42,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:42,844 INFO L87 Difference]: Start difference. First operand 1659 states and 2538 transitions. Second operand 5 states. [2020-10-12 19:20:54,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:54,105 INFO L93 Difference]: Finished difference Result 4849 states and 7396 transitions. [2020-10-12 19:20:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:54,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2020-10-12 19:20:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:54,124 INFO L225 Difference]: With dead ends: 4849 [2020-10-12 19:20:54,124 INFO L226 Difference]: Without dead ends: 3247 [2020-10-12 19:20:54,129 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 [2020-10-12 19:20:54,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2020-10-12 19:20:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 3163. [2020-10-12 19:20:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-12 19:20:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4830 transitions. [2020-10-12 19:20:54,378 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4830 transitions. Word has length 300 [2020-10-12 19:20:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:54,380 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 4830 transitions. [2020-10-12 19:20:54,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4830 transitions. [2020-10-12 19:20:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-12 19:20:54,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:54,395 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] [2020-10-12 19:20:54,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:20:54,396 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]=== [2020-10-12 19:20:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1615557185, now seen corresponding path program 1 times [2020-10-12 19:20:54,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:54,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046423667] [2020-10-12 19:20:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:59,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:59,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-12 19:20:59,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:20:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 19:20:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:20:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 19:20:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:00,283 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:21:00,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:00,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:00,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:00,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:21:00,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:00,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:00,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046423667] [2020-10-12 19:21:00,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:00,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:00,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762530985] [2020-10-12 19:21:00,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:00,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:00,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:00,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:00,476 INFO L87 Difference]: Start difference. First operand 3163 states and 4830 transitions. Second operand 5 states. [2020-10-12 19:21:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:09,876 INFO L93 Difference]: Finished difference Result 9193 states and 13978 transitions. [2020-10-12 19:21:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:09,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-12 19:21:09,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:09,907 INFO L225 Difference]: With dead ends: 9193 [2020-10-12 19:21:09,908 INFO L226 Difference]: Without dead ends: 6170 [2020-10-12 19:21:09,915 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 [2020-10-12 19:21:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2020-10-12 19:21:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6073. [2020-10-12 19:21:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6073 states. [2020-10-12 19:21:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6073 states to 6073 states and 9230 transitions. [2020-10-12 19:21:10,406 INFO L78 Accepts]: Start accepts. Automaton has 6073 states and 9230 transitions. Word has length 302 [2020-10-12 19:21:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:10,408 INFO L479 AbstractCegarLoop]: Abstraction has 6073 states and 9230 transitions. [2020-10-12 19:21:10,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 6073 states and 9230 transitions. [2020-10-12 19:21:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-12 19:21:10,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:10,426 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] [2020-10-12 19:21:10,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:21:10,426 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]=== [2020-10-12 19:21:10,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:10,427 INFO L82 PathProgramCache]: Analyzing trace with hash 240302582, now seen corresponding path program 1 times [2020-10-12 19:21:10,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:10,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855747052] [2020-10-12 19:21:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:10,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:15,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:15,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 19:21:15,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:21:15,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:21:15,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 19:21:15,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:16,410 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:21:16,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:16,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:16,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:16,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:16,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:21:16,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:16,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:21:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:16,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855747052] [2020-10-12 19:21:16,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:16,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:16,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296744984] [2020-10-12 19:21:16,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:16,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:16,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:16,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:16,692 INFO L87 Difference]: Start difference. First operand 6073 states and 9230 transitions. Second operand 5 states. [2020-10-12 19:21:25,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:25,837 INFO L93 Difference]: Finished difference Result 17761 states and 26897 transitions. [2020-10-12 19:21:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:25,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-12 19:21:25,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:25,885 INFO L225 Difference]: With dead ends: 17761 [2020-10-12 19:21:25,885 INFO L226 Difference]: Without dead ends: 11792 [2020-10-12 19:21:25,898 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 [2020-10-12 19:21:25,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11792 states. [2020-10-12 19:21:26,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11792 to 11730. [2020-10-12 19:21:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11730 states. [2020-10-12 19:21:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11730 states to 11730 states and 17654 transitions. [2020-10-12 19:21:26,588 INFO L78 Accepts]: Start accepts. Automaton has 11730 states and 17654 transitions. Word has length 304 [2020-10-12 19:21:26,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:26,588 INFO L479 AbstractCegarLoop]: Abstraction has 11730 states and 17654 transitions. [2020-10-12 19:21:26,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:26,589 INFO L276 IsEmpty]: Start isEmpty. Operand 11730 states and 17654 transitions. [2020-10-12 19:21:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 19:21:26,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:26,613 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] [2020-10-12 19:21:26,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:21:26,614 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]=== [2020-10-12 19:21:26,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:26,615 INFO L82 PathProgramCache]: Analyzing trace with hash 731373106, now seen corresponding path program 1 times [2020-10-12 19:21:26,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:26,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037201572] [2020-10-12 19:21:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:28,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:28,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:31,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:31,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:31,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:31,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-12 19:21:31,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:21:31,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 19:21:31,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:31,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:31,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:31,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 19:21:31,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:32,499 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:21:32,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:32,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:32,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:21:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:32,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037201572] [2020-10-12 19:21:32,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:32,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:32,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432264435] [2020-10-12 19:21:32,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:32,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:32,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:32,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:32,822 INFO L87 Difference]: Start difference. First operand 11730 states and 17654 transitions. Second operand 5 states. [2020-10-12 19:21:42,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:42,747 INFO L93 Difference]: Finished difference Result 34846 states and 52389 transitions. [2020-10-12 19:21:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:42,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-12 19:21:42,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:42,808 INFO L225 Difference]: With dead ends: 34846 [2020-10-12 19:21:42,808 INFO L226 Difference]: Without dead ends: 23132 [2020-10-12 19:21:42,832 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 [2020-10-12 19:21:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23132 states. [2020-10-12 19:21:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23132 to 23016. [2020-10-12 19:21:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23016 states. [2020-10-12 19:21:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23016 states to 23016 states and 34402 transitions. [2020-10-12 19:21:44,061 INFO L78 Accepts]: Start accepts. Automaton has 23016 states and 34402 transitions. Word has length 306 [2020-10-12 19:21:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:44,062 INFO L479 AbstractCegarLoop]: Abstraction has 23016 states and 34402 transitions. [2020-10-12 19:21:44,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 23016 states and 34402 transitions. [2020-10-12 19:21:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-12 19:21:44,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:44,106 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] [2020-10-12 19:21:44,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:21:44,107 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]=== [2020-10-12 19:21:44,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:44,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1042957692, now seen corresponding path program 1 times [2020-10-12 19:21:44,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:44,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684892493] [2020-10-12 19:21:44,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:44,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:44,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:44,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:44,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:45,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:46,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:49,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:49,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 19:21:49,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:21:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:21:49,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:49,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 19:21:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:49,824 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:21:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:49,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:49,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:49,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:21:49,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:49,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684892493] [2020-10-12 19:21:49,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:49,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:49,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471571276] [2020-10-12 19:21:49,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:49,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:49,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:49,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:49,976 INFO L87 Difference]: Start difference. First operand 23016 states and 34402 transitions. Second operand 5 states. [2020-10-12 19:22:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:01,480 INFO L93 Difference]: Finished difference Result 67403 states and 100487 transitions. [2020-10-12 19:22:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:01,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-12 19:22:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:01,576 INFO L225 Difference]: With dead ends: 67403 [2020-10-12 19:22:01,576 INFO L226 Difference]: Without dead ends: 44887 [2020-10-12 19:22:01,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:22:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44887 states. [2020-10-12 19:22:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44887 to 44751. [2020-10-12 19:22:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44751 states. [2020-10-12 19:22:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44751 states to 44751 states and 66281 transitions. [2020-10-12 19:22:03,834 INFO L78 Accepts]: Start accepts. Automaton has 44751 states and 66281 transitions. Word has length 308 [2020-10-12 19:22:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:03,834 INFO L479 AbstractCegarLoop]: Abstraction has 44751 states and 66281 transitions. [2020-10-12 19:22:03,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 44751 states and 66281 transitions. [2020-10-12 19:22:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-12 19:22:03,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:03,881 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] [2020-10-12 19:22:03,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:22:03,882 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]=== [2020-10-12 19:22:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:03,882 INFO L82 PathProgramCache]: Analyzing trace with hash -418797761, now seen corresponding path program 1 times [2020-10-12 19:22:03,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:03,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506740710] [2020-10-12 19:22:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:05,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:07,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:07,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:08,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:08,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-12 19:22:08,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:22:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:22:08,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:22:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:22:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 19:22:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:09,553 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:22:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:22:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:09,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:09,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:09,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:22:09,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:22:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:22:09,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:22:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:22:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:22:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:22:09,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506740710] [2020-10-12 19:22:09,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:22:09,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:22:09,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604208519] [2020-10-12 19:22:09,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:22:09,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:22:09,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:22:09,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:22:09,671 INFO L87 Difference]: Start difference. First operand 44751 states and 66281 transitions. Second operand 5 states. [2020-10-12 19:22:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:23,789 INFO L93 Difference]: Finished difference Result 132247 states and 195631 transitions. [2020-10-12 19:22:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:23,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-12 19:22:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:23,947 INFO L225 Difference]: With dead ends: 132247 [2020-10-12 19:22:23,948 INFO L226 Difference]: Without dead ends: 87873 [2020-10-12 19:22:24,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:22:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87873 states. [2020-10-12 19:22:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87873 to 87737. [2020-10-12 19:22:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87737 states. [2020-10-12 19:22:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87737 states to 87737 states and 129013 transitions. [2020-10-12 19:22:28,552 INFO L78 Accepts]: Start accepts. Automaton has 87737 states and 129013 transitions. Word has length 310 [2020-10-12 19:22:28,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:28,552 INFO L479 AbstractCegarLoop]: Abstraction has 87737 states and 129013 transitions. [2020-10-12 19:22:28,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 87737 states and 129013 transitions. [2020-10-12 19:22:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 19:22:28,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:28,624 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] [2020-10-12 19:22:28,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:22:28,625 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]=== [2020-10-12 19:22:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:28,625 INFO L82 PathProgramCache]: Analyzing trace with hash -543800821, now seen corresponding path program 1 times [2020-10-12 19:22:28,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:28,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822108055] [2020-10-12 19:22:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:30,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:30,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:30,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:31,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:33,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:33,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-12 19:22:33,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:22:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:22:33,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:22:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 19:22:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 19:22:33,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:34,291 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:22:34,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:22:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:34,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:34,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:22:34,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:22:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:22:34,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:22:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:22:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:22:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:22:34,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822108055] [2020-10-12 19:22:34,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:22:34,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:22:34,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913255954] [2020-10-12 19:22:34,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:22:34,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:22:34,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:22:34,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:22:34,382 INFO L87 Difference]: Start difference. First operand 87737 states and 129013 transitions. Second operand 5 states. [2020-10-12 19:22:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:49,659 INFO L93 Difference]: Finished difference Result 238129 states and 346601 transitions. [2020-10-12 19:22:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:49,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-12 19:22:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:49,963 INFO L225 Difference]: With dead ends: 238129 [2020-10-12 19:22:49,963 INFO L226 Difference]: Without dead ends: 162281 [2020-10-12 19:22:50,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:22:50,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162281 states. [2020-10-12 19:22:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162281 to 96521. [2020-10-12 19:22:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96521 states. [2020-10-12 19:22:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96521 states to 96521 states and 143829 transitions. [2020-10-12 19:22:58,489 INFO L78 Accepts]: Start accepts. Automaton has 96521 states and 143829 transitions. Word has length 312 [2020-10-12 19:22:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:58,489 INFO L479 AbstractCegarLoop]: Abstraction has 96521 states and 143829 transitions. [2020-10-12 19:22:58,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 96521 states and 143829 transitions. [2020-10-12 19:22:58,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-12 19:22:58,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:58,564 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] [2020-10-12 19:22:58,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:22:58,565 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]=== [2020-10-12 19:22:58,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:58,565 INFO L82 PathProgramCache]: Analyzing trace with hash 559875356, now seen corresponding path program 1 times [2020-10-12 19:22:58,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:58,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768106673] [2020-10-12 19:22:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:58,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:58,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:59,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:01,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:03,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:23:03,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 19:23:03,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:23:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 19:23:03,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:23:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:23:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:23:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 19:23:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:23:04,238 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-12 19:23:04,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:23:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:23:04,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:04,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:23:04,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:23:04,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:23:04,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:23:04,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:23:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:23:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:23:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:23:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:23:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:23:04,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768106673] [2020-10-12 19:23:04,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:23:04,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:23:04,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148050302] [2020-10-12 19:23:04,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:23:04,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:23:04,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:23:04,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:23:04,373 INFO L87 Difference]: Start difference. First operand 96521 states and 143829 transitions. Second operand 5 states. [2020-10-12 19:23:26,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:23:26,411 INFO L93 Difference]: Finished difference Result 281173 states and 417485 transitions. [2020-10-12 19:23:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:23:26,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-12 19:23:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:23:26,696 INFO L225 Difference]: With dead ends: 281173 [2020-10-12 19:23:26,697 INFO L226 Difference]: Without dead ends: 190061 [2020-10-12 19:23:26,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:23:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190061 states. [2020-10-12 19:23:42,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190061 to 189953. [2020-10-12 19:23:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189953 states. [2020-10-12 19:23:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189953 states to 189953 states and 280745 transitions. [2020-10-12 19:23:42,715 INFO L78 Accepts]: Start accepts. Automaton has 189953 states and 280745 transitions. Word has length 314 [2020-10-12 19:23:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:23:42,715 INFO L479 AbstractCegarLoop]: Abstraction has 189953 states and 280745 transitions. [2020-10-12 19:23:42,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:23:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 189953 states and 280745 transitions. [2020-10-12 19:23:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-12 19:23:42,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:23:42,854 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] [2020-10-12 19:23:42,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:23:42,854 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]=== [2020-10-12 19:23:42,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:23:42,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1286087781, now seen corresponding path program 1 times [2020-10-12 19:23:42,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:23:42,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542190474] [2020-10-12 19:23:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:23:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:23:42,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:42,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking...