/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:01:00,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:01:00,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:01:00,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:01:00,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:01:00,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:01:00,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:01:00,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:01:00,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:01:00,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:01:00,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:01:00,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:01:00,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:01:00,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:01:00,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:01:00,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:01:00,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:01:00,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:01:00,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:01:01,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:01:01,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:01:01,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:01:01,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:01:01,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:01:01,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:01:01,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:01:01,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:01:01,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:01:01,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:01:01,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:01:01,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:01:01,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:01:01,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:01:01,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:01:01,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:01:01,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:01:01,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:01:01,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:01:01,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:01:01,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:01:01,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:01:01,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:01:01,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:01:01,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:01:01,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:01:01,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:01:01,078 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:01:01,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:01:01,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:01:01,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:01:01,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:01:01,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:01:01,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:01:01,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:01:01,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:01:01,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:01:01,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:01:01,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:01:01,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:01:01,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:01:01,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:01:01,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:01:01,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:01:01,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:01:01,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:01:01,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:01:01,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:01:01,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:01:01,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:01:01,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:01:01,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:01:01,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:01:01,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:01:01,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:01:01,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:01:01,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:01:01,443 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:01:01,444 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:01:01,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/455b7fa86/b4ad8bb69bae432a9fc550d9b46e7580/FLAG7f70c5666 [2020-10-13 14:01:02,124 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:01:02,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:01:02,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/455b7fa86/b4ad8bb69bae432a9fc550d9b46e7580/FLAG7f70c5666 [2020-10-13 14:01:02,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/455b7fa86/b4ad8bb69bae432a9fc550d9b46e7580 [2020-10-13 14:01:02,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:01:02,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:01:02,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:01:02,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:01:02,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:01:02,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:02" (1/1) ... [2020-10-13 14:01:02,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c954cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:02, skipping insertion in model container [2020-10-13 14:01:02,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:02" (1/1) ... [2020-10-13 14:01:02,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:01:02,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:01:03,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:01:03,749 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:01:04,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:01:04,517 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:01:04,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04 WrapperNode [2020-10-13 14:01:04,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:01:04,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:01:04,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:01:04,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:01:04,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... [2020-10-13 14:01:04,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:01:04,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:01:04,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:01:04,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:01:04,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:01:04,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:01:04,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:01:04,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:01:04,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:01:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:01:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:01:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:01:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:01:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:01:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:01:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:01:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:01:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:01:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:01:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:01:04,857 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:01:04,857 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:01:04,857 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:01:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:01:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:01:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:01:07,754 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:01:07,754 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:01:07,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:07 BoogieIcfgContainer [2020-10-13 14:01:07,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:01:07,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:01:07,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:01:07,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:01:07,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:01:02" (1/3) ... [2020-10-13 14:01:07,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7f7401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:07, skipping insertion in model container [2020-10-13 14:01:07,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:04" (2/3) ... [2020-10-13 14:01:07,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7f7401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:07, skipping insertion in model container [2020-10-13 14:01:07,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:07" (3/3) ... [2020-10-13 14:01:07,773 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:01:07,784 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:01:07,793 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-13 14:01:07,808 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-13 14:01:07,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:01:07,836 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:01:07,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:01:07,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:01:07,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:01:07,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:01:07,837 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:01:07,837 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:01:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states. [2020-10-13 14:01:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-13 14:01:07,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:07,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:01:07,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:07,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:07,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1256923188, now seen corresponding path program 1 times [2020-10-13 14:01:07,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:07,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667596328] [2020-10-13 14:01:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:09,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:09,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:11,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:13,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:13,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-13 14:01:13,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:01:13,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 14:01:13,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:01:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:01:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 14:01:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:01:14,717 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:01:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:14,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:14,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:14,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:14,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 14:01:14,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:14,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:15,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667596328] [2020-10-13 14:01:15,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:15,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:01:15,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733084644] [2020-10-13 14:01:15,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:01:15,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:15,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:01:15,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:01:15,073 INFO L87 Difference]: Start difference. First operand 894 states. Second operand 5 states. [2020-10-13 14:01:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:26,576 INFO L93 Difference]: Finished difference Result 2601 states and 4702 transitions. [2020-10-13 14:01:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:01:26,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-13 14:01:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:26,618 INFO L225 Difference]: With dead ends: 2601 [2020-10-13 14:01:26,619 INFO L226 Difference]: Without dead ends: 1750 [2020-10-13 14:01:26,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:01:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2020-10-13 14:01:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1659. [2020-10-13 14:01:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-10-13 14:01:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2538 transitions. [2020-10-13 14:01:26,795 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2538 transitions. Word has length 298 [2020-10-13 14:01:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:26,796 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 2538 transitions. [2020-10-13 14:01:26,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:01:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2538 transitions. [2020-10-13 14:01:26,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-13 14:01:26,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:26,804 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] [2020-10-13 14:01:26,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:01:26,805 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:26,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1877318935, now seen corresponding path program 1 times [2020-10-13 14:01:26,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:26,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641935807] [2020-10-13 14:01:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:27,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:27,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:27,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:27,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:30,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:30,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:31,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:31,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-13 14:01:31,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:01:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:01:31,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:01:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:01:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 14:01:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:01:32,819 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:01:32,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:32,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:32,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:32,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:32,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:32,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 14:01:32,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:32,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:32,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:01:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:33,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641935807] [2020-10-13 14:01:33,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:33,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:01:33,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364479726] [2020-10-13 14:01:33,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:01:33,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:33,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:01:33,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:01:33,288 INFO L87 Difference]: Start difference. First operand 1659 states and 2538 transitions. Second operand 5 states. [2020-10-13 14:01:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:43,051 INFO L93 Difference]: Finished difference Result 4873 states and 7439 transitions. [2020-10-13 14:01:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:01:43,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2020-10-13 14:01:43,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:43,070 INFO L225 Difference]: With dead ends: 4873 [2020-10-13 14:01:43,070 INFO L226 Difference]: Without dead ends: 3267 [2020-10-13 14:01:43,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:01:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-10-13 14:01:43,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 3179. [2020-10-13 14:01:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-13 14:01:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4857 transitions. [2020-10-13 14:01:43,237 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4857 transitions. Word has length 300 [2020-10-13 14:01:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:43,238 INFO L479 AbstractCegarLoop]: Abstraction has 3179 states and 4857 transitions. [2020-10-13 14:01:43,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:01:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4857 transitions. [2020-10-13 14:01:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-13 14:01:43,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:43,247 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] [2020-10-13 14:01:43,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:01:43,248 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:43,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1886675223, now seen corresponding path program 1 times [2020-10-13 14:01:43,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:43,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674429027] [2020-10-13 14:01:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:43,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:46,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:46,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:48,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:48,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:48,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 14:01:48,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:01:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 14:01:48,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:01:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:01:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 14:01:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:01:49,115 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:01:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:49,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:49,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:49,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:49,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:01:49,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:49,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674429027] [2020-10-13 14:01:49,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:49,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:01:49,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023189804] [2020-10-13 14:01:49,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:01:49,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:49,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:01:49,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:01:49,258 INFO L87 Difference]: Start difference. First operand 3179 states and 4857 transitions. Second operand 4 states. [2020-10-13 14:01:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:56,080 INFO L93 Difference]: Finished difference Result 9477 states and 14467 transitions. [2020-10-13 14:01:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:01:56,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2020-10-13 14:01:56,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:56,112 INFO L225 Difference]: With dead ends: 9477 [2020-10-13 14:01:56,113 INFO L226 Difference]: Without dead ends: 6326 [2020-10-13 14:01:56,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:01:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6326 states. [2020-10-13 14:01:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6326 to 3199. [2020-10-13 14:01:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-13 14:01:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4883 transitions. [2020-10-13 14:01:56,325 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4883 transitions. Word has length 302 [2020-10-13 14:01:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:56,325 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 4883 transitions. [2020-10-13 14:01:56,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:01:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4883 transitions. [2020-10-13 14:01:56,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-13 14:01:56,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:56,338 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] [2020-10-13 14:01:56,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:01:56,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:56,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:56,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2029792973, now seen corresponding path program 1 times [2020-10-13 14:01:56,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:56,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685257578] [2020-10-13 14:01:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:56,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:01,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:01,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 14:02:01,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:02:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:02:01,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 14:02:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:02:01,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:02,108 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:02:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:02,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:02,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:02,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:02:02,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:02,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685257578] [2020-10-13 14:02:02,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:02,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:02,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499846514] [2020-10-13 14:02:02,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:02,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:02,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:02,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:02,273 INFO L87 Difference]: Start difference. First operand 3199 states and 4883 transitions. Second operand 5 states. [2020-10-13 14:02:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:11,796 INFO L93 Difference]: Finished difference Result 9209 states and 13975 transitions. [2020-10-13 14:02:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:11,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-13 14:02:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:11,819 INFO L225 Difference]: With dead ends: 9209 [2020-10-13 14:02:11,819 INFO L226 Difference]: Without dead ends: 6318 [2020-10-13 14:02:11,825 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 [2020-10-13 14:02:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2020-10-13 14:02:12,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 3463. [2020-10-13 14:02:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3463 states. [2020-10-13 14:02:12,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 5343 transitions. [2020-10-13 14:02:12,057 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 5343 transitions. Word has length 304 [2020-10-13 14:02:12,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:12,057 INFO L479 AbstractCegarLoop]: Abstraction has 3463 states and 5343 transitions. [2020-10-13 14:02:12,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:12,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 5343 transitions. [2020-10-13 14:02:12,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-13 14:02:12,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:12,068 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] [2020-10-13 14:02:12,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:02:12,070 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:12,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:12,071 INFO L82 PathProgramCache]: Analyzing trace with hash 2041008749, now seen corresponding path program 1 times [2020-10-13 14:02:12,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:12,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481028217] [2020-10-13 14:02:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:12,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:12,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:13,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:13,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:17,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:17,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 14:02:17,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:02:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:02:17,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:02:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 14:02:17,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:17,816 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:02:17,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:17,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:17,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:17,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:02:17,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:17,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:02:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:17,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481028217] [2020-10-13 14:02:17,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:17,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:17,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372889410] [2020-10-13 14:02:17,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:17,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:17,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:17,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:17,975 INFO L87 Difference]: Start difference. First operand 3463 states and 5343 transitions. Second operand 5 states. [2020-10-13 14:02:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:28,340 INFO L93 Difference]: Finished difference Result 10003 states and 15363 transitions. [2020-10-13 14:02:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:28,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-13 14:02:28,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:28,367 INFO L225 Difference]: With dead ends: 10003 [2020-10-13 14:02:28,367 INFO L226 Difference]: Without dead ends: 6740 [2020-10-13 14:02:28,374 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 [2020-10-13 14:02:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2020-10-13 14:02:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 6670. [2020-10-13 14:02:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6670 states. [2020-10-13 14:02:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6670 states to 6670 states and 10219 transitions. [2020-10-13 14:02:29,026 INFO L78 Accepts]: Start accepts. Automaton has 6670 states and 10219 transitions. Word has length 304 [2020-10-13 14:02:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:29,026 INFO L479 AbstractCegarLoop]: Abstraction has 6670 states and 10219 transitions. [2020-10-13 14:02:29,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6670 states and 10219 transitions. [2020-10-13 14:02:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-13 14:02:29,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:29,042 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] [2020-10-13 14:02:29,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:02:29,042 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:29,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:29,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1406979220, now seen corresponding path program 1 times [2020-10-13 14:02:29,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:29,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204936019] [2020-10-13 14:02:29,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:29,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:34,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:34,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-13 14:02:34,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:02:34,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:02:34,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 14:02:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:02:34,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:34,704 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:02:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:34,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:34,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:34,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:34,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:02:34,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:34,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:34,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:34,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:34,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204936019] [2020-10-13 14:02:34,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:34,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:34,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23344440] [2020-10-13 14:02:34,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:34,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:34,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:34,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:34,811 INFO L87 Difference]: Start difference. First operand 6670 states and 10219 transitions. Second operand 5 states. [2020-10-13 14:02:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:42,682 INFO L93 Difference]: Finished difference Result 18236 states and 27708 transitions. [2020-10-13 14:02:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:42,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-13 14:02:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:42,708 INFO L225 Difference]: With dead ends: 18236 [2020-10-13 14:02:42,709 INFO L226 Difference]: Without dead ends: 12527 [2020-10-13 14:02:42,719 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 [2020-10-13 14:02:42,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12527 states. [2020-10-13 14:02:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12527 to 7649. [2020-10-13 14:02:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7649 states. [2020-10-13 14:02:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7649 states to 7649 states and 11892 transitions. [2020-10-13 14:02:43,382 INFO L78 Accepts]: Start accepts. Automaton has 7649 states and 11892 transitions. Word has length 306 [2020-10-13 14:02:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:43,382 INFO L479 AbstractCegarLoop]: Abstraction has 7649 states and 11892 transitions. [2020-10-13 14:02:43,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7649 states and 11892 transitions. [2020-10-13 14:02:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 14:02:43,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:43,401 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] [2020-10-13 14:02:43,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:02:43,401 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:43,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:43,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1521166664, now seen corresponding path program 1 times [2020-10-13 14:02:43,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:43,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269645579] [2020-10-13 14:02:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:43,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:48,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:48,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 14:02:48,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:02:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:02:48,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:02:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:02:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:49,100 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:02:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:49,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:49,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:49,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:02:49,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:49,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269645579] [2020-10-13 14:02:49,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:49,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:49,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952272387] [2020-10-13 14:02:49,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:49,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:49,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:49,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:49,194 INFO L87 Difference]: Start difference. First operand 7649 states and 11892 transitions. Second operand 5 states. [2020-10-13 14:02:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:58,405 INFO L93 Difference]: Finished difference Result 20281 states and 31170 transitions. [2020-10-13 14:02:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:58,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-13 14:02:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:58,433 INFO L225 Difference]: With dead ends: 20281 [2020-10-13 14:02:58,433 INFO L226 Difference]: Without dead ends: 14484 [2020-10-13 14:02:58,445 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 [2020-10-13 14:02:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14484 states. [2020-10-13 14:02:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14484 to 9585. [2020-10-13 14:02:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9585 states. [2020-10-13 14:02:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 15165 transitions. [2020-10-13 14:02:59,161 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 15165 transitions. Word has length 308 [2020-10-13 14:02:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:59,162 INFO L479 AbstractCegarLoop]: Abstraction has 9585 states and 15165 transitions. [2020-10-13 14:02:59,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 15165 transitions. [2020-10-13 14:02:59,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 14:02:59,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:59,179 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] [2020-10-13 14:02:59,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:02:59,179 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:59,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:59,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1774774510, now seen corresponding path program 1 times [2020-10-13 14:02:59,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:59,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935467015] [2020-10-13 14:02:59,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:04,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:04,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 14:03:04,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:03:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:03:04,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:03:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:03:04,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:04,929 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:03:04,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:04,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:04,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:04,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:04,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:04,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:03:04,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:04,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:05,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935467015] [2020-10-13 14:03:05,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:05,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:05,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858505847] [2020-10-13 14:03:05,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:05,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:05,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:05,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:05,153 INFO L87 Difference]: Start difference. First operand 9585 states and 15165 transitions. Second operand 5 states. [2020-10-13 14:03:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:11,136 INFO L93 Difference]: Finished difference Result 14463 states and 22409 transitions. [2020-10-13 14:03:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:11,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-13 14:03:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:11,154 INFO L225 Difference]: With dead ends: 14463 [2020-10-13 14:03:11,154 INFO L226 Difference]: Without dead ends: 8407 [2020-10-13 14:03:11,165 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 [2020-10-13 14:03:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8407 states. [2020-10-13 14:03:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8407 to 8403. [2020-10-13 14:03:11,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8403 states. [2020-10-13 14:03:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8403 states to 8403 states and 13268 transitions. [2020-10-13 14:03:11,701 INFO L78 Accepts]: Start accepts. Automaton has 8403 states and 13268 transitions. Word has length 310 [2020-10-13 14:03:11,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:11,702 INFO L479 AbstractCegarLoop]: Abstraction has 8403 states and 13268 transitions. [2020-10-13 14:03:11,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:11,702 INFO L276 IsEmpty]: Start isEmpty. Operand 8403 states and 13268 transitions. [2020-10-13 14:03:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 14:03:11,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:11,716 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] [2020-10-13 14:03:11,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:03:11,717 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:11,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:11,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2005000436, now seen corresponding path program 1 times [2020-10-13 14:03:11,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:11,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515857574] [2020-10-13 14:03:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:16,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:16,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 14:03:16,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:03:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 14:03:16,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:03:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 14:03:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:17,369 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:03:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:17,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:17,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:03:17,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:17,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:17,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515857574] [2020-10-13 14:03:17,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:17,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:17,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619619215] [2020-10-13 14:03:17,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:17,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:17,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:17,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:17,480 INFO L87 Difference]: Start difference. First operand 8403 states and 13268 transitions. Second operand 4 states. [2020-10-13 14:03:28,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:28,225 INFO L93 Difference]: Finished difference Result 20365 states and 31432 transitions. [2020-10-13 14:03:28,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:03:28,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 311 [2020-10-13 14:03:28,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:28,247 INFO L225 Difference]: With dead ends: 20365 [2020-10-13 14:03:28,247 INFO L226 Difference]: Without dead ends: 14957 [2020-10-13 14:03:28,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14957 states. [2020-10-13 14:03:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14957 to 14671. [2020-10-13 14:03:29,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14671 states. [2020-10-13 14:03:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14671 states to 14671 states and 22795 transitions. [2020-10-13 14:03:29,473 INFO L78 Accepts]: Start accepts. Automaton has 14671 states and 22795 transitions. Word has length 311 [2020-10-13 14:03:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:29,473 INFO L479 AbstractCegarLoop]: Abstraction has 14671 states and 22795 transitions. [2020-10-13 14:03:29,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 14671 states and 22795 transitions. [2020-10-13 14:03:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 14:03:29,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:29,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:29,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:03:29,587 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:29,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:29,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2049279977, now seen corresponding path program 1 times [2020-10-13 14:03:29,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:29,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813359087] [2020-10-13 14:03:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:29,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:29,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:29,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:30,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:34,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:34,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 14:03:34,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:03:34,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 14:03:34,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:03:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 14:03:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:35,224 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:03:35,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:35,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:35,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:35,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:03:35,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:35,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:35,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813359087] [2020-10-13 14:03:35,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:35,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:35,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708544826] [2020-10-13 14:03:35,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:35,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:35,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:35,342 INFO L87 Difference]: Start difference. First operand 14671 states and 22795 transitions. Second operand 4 states. [2020-10-13 14:03:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:46,756 INFO L93 Difference]: Finished difference Result 36162 states and 55381 transitions. [2020-10-13 14:03:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:03:46,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 312 [2020-10-13 14:03:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:46,783 INFO L225 Difference]: With dead ends: 36162 [2020-10-13 14:03:46,784 INFO L226 Difference]: Without dead ends: 25417 [2020-10-13 14:03:46,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25417 states. [2020-10-13 14:03:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25417 to 24789. [2020-10-13 14:03:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24789 states. [2020-10-13 14:03:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24789 states to 24789 states and 38130 transitions. [2020-10-13 14:03:48,442 INFO L78 Accepts]: Start accepts. Automaton has 24789 states and 38130 transitions. Word has length 312 [2020-10-13 14:03:48,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:48,443 INFO L479 AbstractCegarLoop]: Abstraction has 24789 states and 38130 transitions. [2020-10-13 14:03:48,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24789 states and 38130 transitions. [2020-10-13 14:03:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-13 14:03:48,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:48,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:48,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:03:48,468 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:48,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:48,469 INFO L82 PathProgramCache]: Analyzing trace with hash -44476731, now seen corresponding path program 1 times [2020-10-13 14:03:48,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:48,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411540931] [2020-10-13 14:03:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:53,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:53,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-13 14:03:53,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:03:53,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:03:53,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:03:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 14:03:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:54,105 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:03:54,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:54,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:54,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:54,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:03:54,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:54,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411540931] [2020-10-13 14:03:54,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:54,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:54,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362894871] [2020-10-13 14:03:54,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:54,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:54,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:54,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:54,223 INFO L87 Difference]: Start difference. First operand 24789 states and 38130 transitions. Second operand 5 states. [2020-10-13 14:04:06,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:06,596 INFO L93 Difference]: Finished difference Result 71849 states and 110087 transitions. [2020-10-13 14:04:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:06,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-13 14:04:06,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:06,651 INFO L225 Difference]: With dead ends: 71849 [2020-10-13 14:04:06,651 INFO L226 Difference]: Without dead ends: 47978 [2020-10-13 14:04:06,679 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 [2020-10-13 14:04:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47978 states. [2020-10-13 14:04:09,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47978 to 47739. [2020-10-13 14:04:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47739 states. [2020-10-13 14:04:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47739 states to 47739 states and 72579 transitions. [2020-10-13 14:04:11,130 INFO L78 Accepts]: Start accepts. Automaton has 47739 states and 72579 transitions. Word has length 313 [2020-10-13 14:04:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:11,131 INFO L479 AbstractCegarLoop]: Abstraction has 47739 states and 72579 transitions. [2020-10-13 14:04:11,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:11,131 INFO L276 IsEmpty]: Start isEmpty. Operand 47739 states and 72579 transitions. [2020-10-13 14:04:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-13 14:04:11,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:11,171 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] [2020-10-13 14:04:11,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:04:11,172 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:11,172 INFO L82 PathProgramCache]: Analyzing trace with hash -754685629, now seen corresponding path program 1 times [2020-10-13 14:04:11,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:11,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939675843] [2020-10-13 14:04:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:12,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:16,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:16,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 14:04:16,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:04:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 14:04:16,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 14:04:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 14:04:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:16,821 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:04:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:16,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:16,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:16,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:16,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:04:16,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:16,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939675843] [2020-10-13 14:04:16,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:16,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:16,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980078475] [2020-10-13 14:04:16,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:16,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:16,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:16,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:16,947 INFO L87 Difference]: Start difference. First operand 47739 states and 72579 transitions. Second operand 4 states. [2020-10-13 14:04:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:33,416 INFO L93 Difference]: Finished difference Result 133900 states and 201956 transitions. [2020-10-13 14:04:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:04:33,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 315 [2020-10-13 14:04:33,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:33,506 INFO L225 Difference]: With dead ends: 133900 [2020-10-13 14:04:33,506 INFO L226 Difference]: Without dead ends: 93629 [2020-10-13 14:04:33,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93629 states. [2020-10-13 14:04:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93629 to 93390. [2020-10-13 14:04:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93390 states. [2020-10-13 14:04:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93390 states to 93390 states and 141020 transitions. [2020-10-13 14:04:41,170 INFO L78 Accepts]: Start accepts. Automaton has 93390 states and 141020 transitions. Word has length 315 [2020-10-13 14:04:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:41,171 INFO L479 AbstractCegarLoop]: Abstraction has 93390 states and 141020 transitions. [2020-10-13 14:04:41,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 93390 states and 141020 transitions. [2020-10-13 14:04:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-13 14:04:41,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:41,253 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] [2020-10-13 14:04:41,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:04:41,253 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:41,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:41,254 INFO L82 PathProgramCache]: Analyzing trace with hash 886140766, now seen corresponding path program 1 times [2020-10-13 14:04:41,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:41,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391354433] [2020-10-13 14:04:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:42,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:42,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:46,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:46,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 14:04:46,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:04:46,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 14:04:46,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:04:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:04:46,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:46,845 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:04:46,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:46,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:46,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:46,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:46,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:04:46,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:46,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:46,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:46,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:46,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:47,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391354433] [2020-10-13 14:04:47,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:47,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:47,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119755850] [2020-10-13 14:04:47,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:47,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:47,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:47,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:47,091 INFO L87 Difference]: Start difference. First operand 93390 states and 141020 transitions. Second operand 4 states.