/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:37:10,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:37:10,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:37:10,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:37:10,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:37:10,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:37:10,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:37:10,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:37:10,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:37:10,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:37:10,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:37:10,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:37:10,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:37:10,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:37:10,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:37:10,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:37:10,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:37:10,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:37:10,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:37:10,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:37:10,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:37:10,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:37:10,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:37:10,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:37:10,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:37:10,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:37:10,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:37:10,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:37:10,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:37:10,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:37:10,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:37:10,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:37:10,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:37:10,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:37:10,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:37:10,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:37:10,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:37:10,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:37:10,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:37:10,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:37:10,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:37:10,996 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 [2020-10-14 09:37:11,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:37:11,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:37:11,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:37:11,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:37:11,043 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:37:11,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:37:11,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:37:11,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:37:11,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:37:11,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:37:11,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:37:11,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:37:11,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:37:11,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:37:11,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:37:11,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:37:11,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:37:11,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:37:11,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:37:11,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:37:11,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:37:11,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:37:11,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:37:11,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:37:11,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:37:11,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:37:11,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:37:11,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:37:11,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:37:11,050 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:37:11,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:37:11,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:37:11,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:37:11,370 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:37:11,370 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:37:11,371 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:37:11,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfa350289/3bd63bf88e0f45d9b4b7674783a13474/FLAGb0d41c369 [2020-10-14 09:37:12,139 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:37:12,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:37:12,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfa350289/3bd63bf88e0f45d9b4b7674783a13474/FLAGb0d41c369 [2020-10-14 09:37:12,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfa350289/3bd63bf88e0f45d9b4b7674783a13474 [2020-10-14 09:37:12,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:37:12,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:37:12,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:37:12,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:37:12,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:37:12,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:12" (1/1) ... [2020-10-14 09:37:12,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17db21f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:12, skipping insertion in model container [2020-10-14 09:37:12,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:12" (1/1) ... [2020-10-14 09:37:12,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:37:12,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:37:13,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:37:13,666 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:37:14,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:37:14,936 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:37:14,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14 WrapperNode [2020-10-14 09:37:14,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:37:14,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:37:14,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:37:14,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:37:14,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:14,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:15,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:15,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:15,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:15,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:15,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (1/1) ... [2020-10-14 09:37:15,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:37:15,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:37:15,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:37:15,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:37:15,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (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 [2020-10-14 09:37:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:37:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:37:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:37:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:37:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:37:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:37:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:37:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:37:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:37:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:37:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:37:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:37:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:37:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:37:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:37:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:37:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:37:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:37:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:37:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:37:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:37:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:37:19,578 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:37:19,579 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:37:19,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:19 BoogieIcfgContainer [2020-10-14 09:37:19,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:37:19,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:37:19,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:37:19,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:37:19,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:37:12" (1/3) ... [2020-10-14 09:37:19,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319a307b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:19, skipping insertion in model container [2020-10-14 09:37:19,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:14" (2/3) ... [2020-10-14 09:37:19,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319a307b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:19, skipping insertion in model container [2020-10-14 09:37:19,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:19" (3/3) ... [2020-10-14 09:37:19,604 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:37:19,614 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:37:19,629 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:37:19,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:37:19,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:37:19,673 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:37:19,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:37:19,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:37:19,673 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:37:19,673 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:37:19,674 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:37:19,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:37:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states. [2020-10-14 09:37:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:37:19,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:19,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:19,748 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:19,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:19,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1604153631, now seen corresponding path program 1 times [2020-10-14 09:37:19,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:19,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472895322] [2020-10-14 09:37:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:25,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:25,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:37:25,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:37:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-14 09:37:25,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:25,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:25,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 209 [2020-10-14 09:37:25,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:37:25,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:37:27,634 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:37:27,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:27,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:27,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:27,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:37:27,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:27,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:28,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472895322] [2020-10-14 09:37:28,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:28,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:28,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462274876] [2020-10-14 09:37:28,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:28,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:28,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:28,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:28,098 INFO L87 Difference]: Start difference. First operand 1529 states. Second operand 4 states. [2020-10-14 09:37:29,167 WARN L193 SmtUtils]: Spent 970.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-10-14 09:37:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:44,556 INFO L93 Difference]: Finished difference Result 2981 states and 5196 transitions. [2020-10-14 09:37:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:44,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:37:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:44,612 INFO L225 Difference]: With dead ends: 2981 [2020-10-14 09:37:44,612 INFO L226 Difference]: Without dead ends: 2322 [2020-10-14 09:37:44,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2020-10-14 09:37:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2216. [2020-10-14 09:37:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-14 09:37:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3706 transitions. [2020-10-14 09:37:44,884 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3706 transitions. Word has length 376 [2020-10-14 09:37:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:44,890 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 3706 transitions. [2020-10-14 09:37:44,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3706 transitions. [2020-10-14 09:37:44,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:37:44,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:44,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:37:44,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:37:44,918 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:44,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2068990548, now seen corresponding path program 1 times [2020-10-14 09:37:44,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:44,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986716016] [2020-10-14 09:37:44,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:45,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:46,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:47,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:50,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:50,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:37:50,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:37:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 09:37:50,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:50,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 09:37:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:37:50,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:51,597 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:37:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:51,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:51,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:51,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 09:37:51,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:51,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:37:52,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986716016] [2020-10-14 09:37:52,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:52,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:52,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880850722] [2020-10-14 09:37:52,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:52,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:52,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:52,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:52,044 INFO L87 Difference]: Start difference. First operand 2216 states and 3706 transitions. Second operand 4 states. [2020-10-14 09:37:53,327 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 398 [2020-10-14 09:38:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:05,930 INFO L93 Difference]: Finished difference Result 3236 states and 5386 transitions. [2020-10-14 09:38:05,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:05,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:38:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:05,944 INFO L225 Difference]: With dead ends: 3236 [2020-10-14 09:38:05,944 INFO L226 Difference]: Without dead ends: 2040 [2020-10-14 09:38:05,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-10-14 09:38:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2038. [2020-10-14 09:38:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2038 states. [2020-10-14 09:38:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 3419 transitions. [2020-10-14 09:38:06,013 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 3419 transitions. Word has length 376 [2020-10-14 09:38:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:06,014 INFO L479 AbstractCegarLoop]: Abstraction has 2038 states and 3419 transitions. [2020-10-14 09:38:06,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 3419 transitions. [2020-10-14 09:38:06,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:38:06,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:06,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:06,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:38:06,024 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:06,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:06,025 INFO L82 PathProgramCache]: Analyzing trace with hash 295004073, now seen corresponding path program 1 times [2020-10-14 09:38:06,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:06,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762220453] [2020-10-14 09:38:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:06,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:07,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:08,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:11,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:11,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:38:11,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:38:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-14 09:38:11,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:11,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 09:38:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:38:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:12,426 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:38:12,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:12,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:12,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:12,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 09:38:12,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:12,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:12,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:12,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762220453] [2020-10-14 09:38:12,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:12,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:12,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575965508] [2020-10-14 09:38:12,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:12,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:12,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:12,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:12,654 INFO L87 Difference]: Start difference. First operand 2038 states and 3419 transitions. Second operand 4 states. [2020-10-14 09:38:26,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:26,184 INFO L93 Difference]: Finished difference Result 4624 states and 7663 transitions. [2020-10-14 09:38:26,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:38:26,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:38:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:26,205 INFO L225 Difference]: With dead ends: 4624 [2020-10-14 09:38:26,206 INFO L226 Difference]: Without dead ends: 3324 [2020-10-14 09:38:26,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2020-10-14 09:38:26,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 3244. [2020-10-14 09:38:26,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3244 states. [2020-10-14 09:38:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 5377 transitions. [2020-10-14 09:38:26,344 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 5377 transitions. Word has length 376 [2020-10-14 09:38:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:26,345 INFO L479 AbstractCegarLoop]: Abstraction has 3244 states and 5377 transitions. [2020-10-14 09:38:26,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 5377 transitions. [2020-10-14 09:38:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:38:26,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:26,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:26,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:38:26,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:26,360 INFO L82 PathProgramCache]: Analyzing trace with hash -824513130, now seen corresponding path program 1 times [2020-10-14 09:38:26,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:26,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838009576] [2020-10-14 09:38:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:27,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:27,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:28,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:31,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:31,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:38:31,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:38:31,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 09:38:31,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:31,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:31,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:31,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 09:38:31,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:38:31,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:32,533 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:38:32,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:32,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:32,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:32,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:32,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:32,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 09:38:32,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:32,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:32,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838009576] [2020-10-14 09:38:32,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:32,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:32,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780072450] [2020-10-14 09:38:32,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:32,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:32,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:32,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:32,790 INFO L87 Difference]: Start difference. First operand 3244 states and 5377 transitions. Second operand 4 states. [2020-10-14 09:38:33,769 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-10-14 09:38:48,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:48,011 INFO L93 Difference]: Finished difference Result 7952 states and 13042 transitions. [2020-10-14 09:38:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:48,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:38:48,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:48,040 INFO L225 Difference]: With dead ends: 7952 [2020-10-14 09:38:48,040 INFO L226 Difference]: Without dead ends: 5686 [2020-10-14 09:38:48,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:48,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2020-10-14 09:38:48,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5320. [2020-10-14 09:38:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5320 states. [2020-10-14 09:38:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 8722 transitions. [2020-10-14 09:38:48,282 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 8722 transitions. Word has length 376 [2020-10-14 09:38:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:48,283 INFO L479 AbstractCegarLoop]: Abstraction has 5320 states and 8722 transitions. [2020-10-14 09:38:48,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 8722 transitions. [2020-10-14 09:38:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:38:48,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:48,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:38:48,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:38:48,305 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:48,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1741063000, now seen corresponding path program 1 times [2020-10-14 09:38:48,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:48,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251631161] [2020-10-14 09:38:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:48,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:50,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:50,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:51,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:52,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:53,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:53,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:38:53,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:38:53,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 09:38:53,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:53,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-14 09:38:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:38:53,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:54,487 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:38:54,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:54,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:54,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:54,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:54,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:38:54,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:54,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:54,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:38:54,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251631161] [2020-10-14 09:38:54,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:54,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:54,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116467469] [2020-10-14 09:38:54,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:54,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:54,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:54,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:54,663 INFO L87 Difference]: Start difference. First operand 5320 states and 8722 transitions. Second operand 4 states. [2020-10-14 09:39:07,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:07,004 INFO L93 Difference]: Finished difference Result 13108 states and 21368 transitions. [2020-10-14 09:39:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:39:07,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:39:07,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:07,048 INFO L225 Difference]: With dead ends: 13108 [2020-10-14 09:39:07,049 INFO L226 Difference]: Without dead ends: 9114 [2020-10-14 09:39:07,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9114 states. [2020-10-14 09:39:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9114 to 8800. [2020-10-14 09:39:07,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8800 states. [2020-10-14 09:39:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8800 states to 8800 states and 14270 transitions. [2020-10-14 09:39:07,438 INFO L78 Accepts]: Start accepts. Automaton has 8800 states and 14270 transitions. Word has length 376 [2020-10-14 09:39:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:07,439 INFO L479 AbstractCegarLoop]: Abstraction has 8800 states and 14270 transitions. [2020-10-14 09:39:07,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 8800 states and 14270 transitions. [2020-10-14 09:39:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:39:07,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:07,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:07,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:39:07,464 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:07,464 INFO L82 PathProgramCache]: Analyzing trace with hash -728171881, now seen corresponding path program 1 times [2020-10-14 09:39:07,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:07,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255261922] [2020-10-14 09:39:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:07,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:08,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:09,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:12,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:12,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:39:12,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:39:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 09:39:12,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:12,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-14 09:39:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:39:12,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:39:13,572 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:39:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:13,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:13,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:13,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:13,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:39:13,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:13,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:13,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255261922] [2020-10-14 09:39:13,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:13,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:13,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671671893] [2020-10-14 09:39:13,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:13,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:13,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:13,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:13,696 INFO L87 Difference]: Start difference. First operand 8800 states and 14270 transitions. Second operand 4 states. [2020-10-14 09:39:14,645 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-10-14 09:39:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:24,863 INFO L93 Difference]: Finished difference Result 13428 states and 21852 transitions. [2020-10-14 09:39:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:39:24,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:39:24,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:24,892 INFO L225 Difference]: With dead ends: 13428 [2020-10-14 09:39:24,893 INFO L226 Difference]: Without dead ends: 5874 [2020-10-14 09:39:24,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:39:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2020-10-14 09:39:25,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5872. [2020-10-14 09:39:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5872 states. [2020-10-14 09:39:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 9634 transitions. [2020-10-14 09:39:25,124 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 9634 transitions. Word has length 376 [2020-10-14 09:39:25,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:25,124 INFO L479 AbstractCegarLoop]: Abstraction has 5872 states and 9634 transitions. [2020-10-14 09:39:25,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 9634 transitions. [2020-10-14 09:39:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:39:25,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:25,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:25,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:39:25,136 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:25,136 INFO L82 PathProgramCache]: Analyzing trace with hash 691393917, now seen corresponding path program 1 times [2020-10-14 09:39:25,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:25,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198267594] [2020-10-14 09:39:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:25,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:25,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:26,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:26,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:28,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:30,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:30,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:39:30,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:39:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 09:39:30,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:30,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 09:39:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:39:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:31,318 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:39:31,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:31,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:31,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:31,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:39:31,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:31,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:31,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198267594] [2020-10-14 09:39:31,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:31,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:31,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221142015] [2020-10-14 09:39:31,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:31,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:31,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:31,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:31,472 INFO L87 Difference]: Start difference. First operand 5872 states and 9634 transitions. Second operand 4 states. [2020-10-14 09:39:32,446 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-10-14 09:39:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:46,128 INFO L93 Difference]: Finished difference Result 14580 states and 23764 transitions. [2020-10-14 09:39:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:39:46,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:39:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:46,152 INFO L225 Difference]: With dead ends: 14580 [2020-10-14 09:39:46,152 INFO L226 Difference]: Without dead ends: 10370 [2020-10-14 09:39:46,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:39:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10370 states. [2020-10-14 09:39:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10370 to 9536. [2020-10-14 09:39:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9536 states. [2020-10-14 09:39:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9536 states to 9536 states and 15490 transitions. [2020-10-14 09:39:46,538 INFO L78 Accepts]: Start accepts. Automaton has 9536 states and 15490 transitions. Word has length 376 [2020-10-14 09:39:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:46,538 INFO L479 AbstractCegarLoop]: Abstraction has 9536 states and 15490 transitions. [2020-10-14 09:39:46,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 9536 states and 15490 transitions. [2020-10-14 09:39:46,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:39:46,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:46,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:46,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:39:46,554 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1655166860, now seen corresponding path program 1 times [2020-10-14 09:39:46,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:46,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324337667] [2020-10-14 09:39:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:49,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:49,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:51,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:51,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:39:51,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 09:39:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:39:51,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:51,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 293 [2020-10-14 09:39:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:39:51,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:52,698 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:39:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:52,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:52,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:52,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:52,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:52,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:39:52,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:52,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:52,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:39:52,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324337667] [2020-10-14 09:39:52,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:52,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:52,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863381428] [2020-10-14 09:39:52,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:52,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:52,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:52,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:52,848 INFO L87 Difference]: Start difference. First operand 9536 states and 15490 transitions. Second operand 4 states. [2020-10-14 09:39:53,864 WARN L193 SmtUtils]: Spent 959.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-10-14 09:40:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:06,925 INFO L93 Difference]: Finished difference Result 17252 states and 28086 transitions. [2020-10-14 09:40:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:06,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:40:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:06,947 INFO L225 Difference]: With dead ends: 17252 [2020-10-14 09:40:06,947 INFO L226 Difference]: Without dead ends: 9538 [2020-10-14 09:40:06,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9538 states. [2020-10-14 09:40:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9538 to 9536. [2020-10-14 09:40:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9536 states. [2020-10-14 09:40:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9536 states to 9536 states and 15454 transitions. [2020-10-14 09:40:07,360 INFO L78 Accepts]: Start accepts. Automaton has 9536 states and 15454 transitions. Word has length 376 [2020-10-14 09:40:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:07,361 INFO L479 AbstractCegarLoop]: Abstraction has 9536 states and 15454 transitions. [2020-10-14 09:40:07,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 9536 states and 15454 transitions. [2020-10-14 09:40:07,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:40:07,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:07,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:07,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:40:07,375 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:07,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:07,376 INFO L82 PathProgramCache]: Analyzing trace with hash 105377204, now seen corresponding path program 1 times [2020-10-14 09:40:07,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:07,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021853414] [2020-10-14 09:40:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:08,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:08,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:08,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:08,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:08,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:12,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:12,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:40:12,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:40:12,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 09:40:12,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:12,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:12,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 09:40:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 09:40:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:13,614 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:40:13,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:13,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:13,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:40:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:13,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:13,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021853414] [2020-10-14 09:40:13,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:13,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:13,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820125260] [2020-10-14 09:40:13,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:13,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:13,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:13,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:13,723 INFO L87 Difference]: Start difference. First operand 9536 states and 15454 transitions. Second operand 4 states. [2020-10-14 09:40:14,792 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 398 [2020-10-14 09:40:24,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:24,926 INFO L93 Difference]: Finished difference Result 9540 states and 15456 transitions. [2020-10-14 09:40:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:24,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:40:24,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:24,938 INFO L225 Difference]: With dead ends: 9540 [2020-10-14 09:40:24,938 INFO L226 Difference]: Without dead ends: 5022 [2020-10-14 09:40:24,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5022 states. [2020-10-14 09:40:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5022 to 5020. [2020-10-14 09:40:25,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5020 states. [2020-10-14 09:40:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 8184 transitions. [2020-10-14 09:40:25,180 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 8184 transitions. Word has length 376 [2020-10-14 09:40:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:25,181 INFO L479 AbstractCegarLoop]: Abstraction has 5020 states and 8184 transitions. [2020-10-14 09:40:25,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 8184 transitions. [2020-10-14 09:40:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:40:25,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:25,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:25,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:40:25,189 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:25,190 INFO L82 PathProgramCache]: Analyzing trace with hash -913077156, now seen corresponding path program 1 times [2020-10-14 09:40:25,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:25,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604296371] [2020-10-14 09:40:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:25,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:30,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:30,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:40:30,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:40:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 09:40:30,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:30,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 320 [2020-10-14 09:40:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 09:40:30,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:31,377 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:40:31,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:31,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:31,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:31,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:40:31,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:31,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:31,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604296371] [2020-10-14 09:40:31,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:31,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:31,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253361501] [2020-10-14 09:40:31,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:31,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:31,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:31,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:31,496 INFO L87 Difference]: Start difference. First operand 5020 states and 8184 transitions. Second operand 4 states. [2020-10-14 09:40:32,469 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-10-14 09:40:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:43,856 INFO L93 Difference]: Finished difference Result 7848 states and 12930 transitions. [2020-10-14 09:40:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:43,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-14 09:40:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:43,866 INFO L225 Difference]: With dead ends: 7848 [2020-10-14 09:40:43,867 INFO L226 Difference]: Without dead ends: 5878 [2020-10-14 09:40:43,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:43,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2020-10-14 09:40:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5868. [2020-10-14 09:40:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5868 states. [2020-10-14 09:40:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5868 states to 5868 states and 9600 transitions. [2020-10-14 09:40:44,142 INFO L78 Accepts]: Start accepts. Automaton has 5868 states and 9600 transitions. Word has length 376 [2020-10-14 09:40:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:44,143 INFO L479 AbstractCegarLoop]: Abstraction has 5868 states and 9600 transitions. [2020-10-14 09:40:44,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5868 states and 9600 transitions. [2020-10-14 09:40:44,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 09:40:44,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:44,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:44,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:40:44,154 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:44,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:44,155 INFO L82 PathProgramCache]: Analyzing trace with hash 442021273, now seen corresponding path program 1 times [2020-10-14 09:40:44,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:44,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735815404] [2020-10-14 09:40:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:44,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:44,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:49,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 09:40:49,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:40:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:40:49,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:49,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-14 09:40:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 09:40:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:50,347 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-14 09:40:50,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:50,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:50,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:50,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:50,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:40:50,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:50,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:50,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:50,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735815404] [2020-10-14 09:40:50,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:50,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:50,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574116818] [2020-10-14 09:40:50,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:50,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:50,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:50,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:50,561 INFO L87 Difference]: Start difference. First operand 5868 states and 9600 transitions. Second operand 4 states. [2020-10-14 09:40:51,508 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 397