/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.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:37:14,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:37:14,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:37:14,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:37:14,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:37:14,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:37:14,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:37:14,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:37:14,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:37:14,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:37:14,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:37:14,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:37:14,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:37:14,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:37:14,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:37:14,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:37:14,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:37:14,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:37:14,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:37:14,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:37:14,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:37:14,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:37:14,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:37:14,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:37:14,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:37:14,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:37:14,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:37:14,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:37:14,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:37:14,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:37:14,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:37:14,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:37:14,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:37:14,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:37:14,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:37:14,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:37:14,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:37:14,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:37:14,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:37:14,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:37:14,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:37:14,342 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 09:37:14,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:37:14,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:37:14,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:37:14,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:37:14,368 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:37:14,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:37:14,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:37:14,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:37:14,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:37:14,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:37:14,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:37:14,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:37:14,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:37:14,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:37:14,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:37:14,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:37:14,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:37:14,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:37:14,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:37:14,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:37:14,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:37:14,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:37:14,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:37:14,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:37:14,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:37:14,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:37:14,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:37:14,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:37:14,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:37:14,373 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 09:37:14,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:37:14,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:37:14,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:37:14,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:37:14,693 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:37:14,694 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 09:37:14,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d6eda8ea/b765663223fc42bb93abdc5f9a94ca99/FLAG240b221af [2020-10-14 09:37:15,408 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:37:15,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 09:37:15,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d6eda8ea/b765663223fc42bb93abdc5f9a94ca99/FLAG240b221af [2020-10-14 09:37:15,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d6eda8ea/b765663223fc42bb93abdc5f9a94ca99 [2020-10-14 09:37:15,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:37:15,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:37:15,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:37:15,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:37:15,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:37:15,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:15" (1/1) ... [2020-10-14 09:37:15,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@764ef010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:15, skipping insertion in model container [2020-10-14 09:37:15,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:37:15" (1/1) ... [2020-10-14 09:37:15,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:37:15,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:37:16,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:37:16,390 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:37:16,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:37:16,743 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:37:16,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16 WrapperNode [2020-10-14 09:37:16,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:37:16,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:37:16,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:37:16,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:37:16,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16" (1/1) ... [2020-10-14 09:37:16,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16" (1/1) ... [2020-10-14 09:37:16,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16" (1/1) ... [2020-10-14 09:37:16,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16" (1/1) ... [2020-10-14 09:37:16,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16" (1/1) ... [2020-10-14 09:37:16,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16" (1/1) ... [2020-10-14 09:37:16,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16" (1/1) ... [2020-10-14 09:37:16,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:37:16,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:37:16,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:37:16,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:37:16,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16" (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 09:37:16,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:37:16,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:37:16,986 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:37:16,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:37:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:37:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:37:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:37:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:37:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:37:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:37:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:37:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:37:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:37:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:37:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:37:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:37:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:37:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:37:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:37:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:37:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:37:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:37:19,184 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:37:19,184 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:37:19,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:19 BoogieIcfgContainer [2020-10-14 09:37:19,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:37:19,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:37:19,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:37:19,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:37:19,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:37:15" (1/3) ... [2020-10-14 09:37:19,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abf6a9e 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 09:37:19,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:16" (2/3) ... [2020-10-14 09:37:19,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abf6a9e 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 09:37:19,206 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 09:37:19,208 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 09:37:19,221 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:37:19,231 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:37:19,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:37:19,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:37:19,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:37:19,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:37:19,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:37:19,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:37:19,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:37:19,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:37:19,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:37:19,366 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2020-10-14 09:37:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 09:37:19,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:19,414 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] [2020-10-14 09:37:19,415 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:19,421 INFO L82 PathProgramCache]: Analyzing trace with hash 558716282, now seen corresponding path program 1 times [2020-10-14 09:37:19,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:19,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120964685] [2020-10-14 09:37:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:20,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:25,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:25,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 09:37:25,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:37:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5179 [2020-10-14 09:37:25,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:25,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 09:37:25,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 09:37:25,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 09:37:26,380 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:37:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:26,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:26,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:26,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:37:26,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:26,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:26,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:26,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:26,525 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 09:37:26,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120964685] [2020-10-14 09:37:26,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:26,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:26,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620452556] [2020-10-14 09:37:26,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:26,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:26,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:26,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:26,563 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2020-10-14 09:37:27,386 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:37:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:33,041 INFO L93 Difference]: Finished difference Result 1209 states and 2150 transitions. [2020-10-14 09:37:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:33,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-14 09:37:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:33,069 INFO L225 Difference]: With dead ends: 1209 [2020-10-14 09:37:33,069 INFO L226 Difference]: Without dead ends: 978 [2020-10-14 09:37:33,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-14 09:37:33,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 976. [2020-10-14 09:37:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-10-14 09:37:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1694 transitions. [2020-10-14 09:37:33,194 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1694 transitions. Word has length 217 [2020-10-14 09:37:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:33,199 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1694 transitions. [2020-10-14 09:37:33,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1694 transitions. [2020-10-14 09:37:33,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 09:37:33,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:33,215 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] [2020-10-14 09:37:33,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:37:33,217 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:33,218 INFO L82 PathProgramCache]: Analyzing trace with hash -103429761, now seen corresponding path program 1 times [2020-10-14 09:37:33,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:33,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306110389] [2020-10-14 09:37:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:35,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:38,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:38,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 09:37:38,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:37:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 09:37:38,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:38,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-14 09:37:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 09:37:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:39,491 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:37:39,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:39,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:39,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:37:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:39,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:39,615 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 09:37:39,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306110389] [2020-10-14 09:37:39,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:39,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:39,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424016950] [2020-10-14 09:37:39,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:39,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:39,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:39,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:39,623 INFO L87 Difference]: Start difference. First operand 976 states and 1694 transitions. Second operand 4 states. [2020-10-14 09:37:40,298 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:37:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:45,252 INFO L93 Difference]: Finished difference Result 1800 states and 3094 transitions. [2020-10-14 09:37:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:45,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2020-10-14 09:37:45,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:45,264 INFO L225 Difference]: With dead ends: 1800 [2020-10-14 09:37:45,264 INFO L226 Difference]: Without dead ends: 1376 [2020-10-14 09:37:45,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:45,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-14 09:37:45,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1374. [2020-10-14 09:37:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-10-14 09:37:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 2369 transitions. [2020-10-14 09:37:45,345 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 2369 transitions. Word has length 221 [2020-10-14 09:37:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:45,347 INFO L479 AbstractCegarLoop]: Abstraction has 1374 states and 2369 transitions. [2020-10-14 09:37:45,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 2369 transitions. [2020-10-14 09:37:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 09:37:45,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:45,353 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] [2020-10-14 09:37:45,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:37:45,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:45,354 INFO L82 PathProgramCache]: Analyzing trace with hash 10460420, now seen corresponding path program 1 times [2020-10-14 09:37:45,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:45,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428931785] [2020-10-14 09:37:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:45,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:46,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:50,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:50,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:50,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 09:37:50,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:37:50,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-14 09:37:50,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:50,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:37:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-14 09:37:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 09:37:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:51,577 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:37:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:37:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:51,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:37:51,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:37:51,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:37:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 09:37:51,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:37:51,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:37:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:37:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:37:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:37:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:37:51,774 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 09:37:51,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428931785] [2020-10-14 09:37:51,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:37:51,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:37:51,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840948786] [2020-10-14 09:37:51,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:37:51,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:37:51,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:37:51,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:37:51,780 INFO L87 Difference]: Start difference. First operand 1374 states and 2369 transitions. Second operand 4 states. [2020-10-14 09:37:52,472 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:37:58,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:37:58,279 INFO L93 Difference]: Finished difference Result 2970 states and 5075 transitions. [2020-10-14 09:37:58,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:37:58,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-14 09:37:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:37:58,292 INFO L225 Difference]: With dead ends: 2970 [2020-10-14 09:37:58,292 INFO L226 Difference]: Without dead ends: 2148 [2020-10-14 09:37:58,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:37:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2020-10-14 09:37:58,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2146. [2020-10-14 09:37:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2146 states. [2020-10-14 09:37:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3673 transitions. [2020-10-14 09:37:58,377 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3673 transitions. Word has length 225 [2020-10-14 09:37:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:37:58,416 INFO L479 AbstractCegarLoop]: Abstraction has 2146 states and 3673 transitions. [2020-10-14 09:37:58,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:37:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3673 transitions. [2020-10-14 09:37:58,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 09:37:58,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:37:58,425 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] [2020-10-14 09:37:58,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:37:58,426 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:37:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:37:58,427 INFO L82 PathProgramCache]: Analyzing trace with hash -756733175, now seen corresponding path program 1 times [2020-10-14 09:37:58,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:37:58,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612483037] [2020-10-14 09:37:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:37:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:37:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:59,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:37:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:00,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:03,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:03,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 09:38:03,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:38:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 09:38:03,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:03,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-14 09:38:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 09:38:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:04,405 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:38:04,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:04,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:04,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:04,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:04,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:38:04,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:04,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:04,526 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 09:38:04,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612483037] [2020-10-14 09:38:04,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:04,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:04,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686655596] [2020-10-14 09:38:04,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:04,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:04,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:04,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:04,529 INFO L87 Difference]: Start difference. First operand 2146 states and 3673 transitions. Second operand 4 states. [2020-10-14 09:38:05,211 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:38:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:10,113 INFO L93 Difference]: Finished difference Result 5238 states and 8899 transitions. [2020-10-14 09:38:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:10,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2020-10-14 09:38:10,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:10,137 INFO L225 Difference]: With dead ends: 5238 [2020-10-14 09:38:10,138 INFO L226 Difference]: Without dead ends: 3644 [2020-10-14 09:38:10,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-10-14 09:38:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3642. [2020-10-14 09:38:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3642 states. [2020-10-14 09:38:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 6189 transitions. [2020-10-14 09:38:10,269 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 6189 transitions. Word has length 229 [2020-10-14 09:38:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:10,269 INFO L479 AbstractCegarLoop]: Abstraction has 3642 states and 6189 transitions. [2020-10-14 09:38:10,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:10,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 6189 transitions. [2020-10-14 09:38:10,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 09:38:10,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:10,275 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] [2020-10-14 09:38:10,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:38:10,276 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:10,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2091208334, now seen corresponding path program 1 times [2020-10-14 09:38:10,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:10,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256010417] [2020-10-14 09:38:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:11,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:11,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:15,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:15,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 09:38:15,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:38:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:38:15,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:15,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:15,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:15,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 09:38:15,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:38:15,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:16,108 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:38:16,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:16,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:16,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:16,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:38:16,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:16,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:16,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:16,227 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 09:38:16,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256010417] [2020-10-14 09:38:16,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:16,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:16,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768203540] [2020-10-14 09:38:16,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:16,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:16,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:16,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:16,229 INFO L87 Difference]: Start difference. First operand 3642 states and 6189 transitions. Second operand 4 states. [2020-10-14 09:38:16,934 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:38:21,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:21,739 INFO L93 Difference]: Finished difference Result 9598 states and 16207 transitions. [2020-10-14 09:38:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:21,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 233 [2020-10-14 09:38:21,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:21,781 INFO L225 Difference]: With dead ends: 9598 [2020-10-14 09:38:21,781 INFO L226 Difference]: Without dead ends: 6508 [2020-10-14 09:38:21,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2020-10-14 09:38:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6506. [2020-10-14 09:38:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6506 states. [2020-10-14 09:38:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6506 states to 6506 states and 10909 transitions. [2020-10-14 09:38:22,077 INFO L78 Accepts]: Start accepts. Automaton has 6506 states and 10909 transitions. Word has length 233 [2020-10-14 09:38:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:22,078 INFO L479 AbstractCegarLoop]: Abstraction has 6506 states and 10909 transitions. [2020-10-14 09:38:22,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6506 states and 10909 transitions. [2020-10-14 09:38:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 09:38:22,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:22,088 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] [2020-10-14 09:38:22,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:38:22,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash -211590509, now seen corresponding path program 1 times [2020-10-14 09:38:22,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:22,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780948323] [2020-10-14 09:38:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:22,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:23,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:24,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:27,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:27,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 09:38:27,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:38:27,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 09:38:27,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:27,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:38:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:38:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 09:38:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:38:28,071 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:38:28,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:28,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:28,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:28,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:38:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:28,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:28,224 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 09:38:28,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780948323] [2020-10-14 09:38:28,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:28,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:38:28,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59081350] [2020-10-14 09:38:28,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:38:28,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:28,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:38:28,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:28,226 INFO L87 Difference]: Start difference. First operand 6506 states and 10909 transitions. Second operand 5 states. [2020-10-14 09:38:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:34,150 INFO L93 Difference]: Finished difference Result 19217 states and 32213 transitions. [2020-10-14 09:38:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:34,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-14 09:38:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:34,259 INFO L225 Difference]: With dead ends: 19217 [2020-10-14 09:38:34,260 INFO L226 Difference]: Without dead ends: 12782 [2020-10-14 09:38:34,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:38:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12782 states. [2020-10-14 09:38:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12782 to 12780. [2020-10-14 09:38:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12780 states. [2020-10-14 09:38:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12780 states to 12780 states and 21371 transitions. [2020-10-14 09:38:34,897 INFO L78 Accepts]: Start accepts. Automaton has 12780 states and 21371 transitions. Word has length 237 [2020-10-14 09:38:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:34,898 INFO L479 AbstractCegarLoop]: Abstraction has 12780 states and 21371 transitions. [2020-10-14 09:38:34,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:38:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 12780 states and 21371 transitions. [2020-10-14 09:38:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 09:38:34,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:34,913 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] [2020-10-14 09:38:34,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:38:34,913 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash 694908309, now seen corresponding path program 1 times [2020-10-14 09:38:34,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:34,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946261559] [2020-10-14 09:38:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:35,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:36,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:37,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:37,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:37,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:38,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:40,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:40,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 09:38:40,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:38:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 09:38:40,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:40,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-14 09:38:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:38:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:40,776 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:38:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:40,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:40,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:40,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:40,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 09:38:40,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:40,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:40,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:40,971 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 09:38:40,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946261559] [2020-10-14 09:38:40,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:40,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:40,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449968763] [2020-10-14 09:38:40,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:40,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:40,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:40,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:40,973 INFO L87 Difference]: Start difference. First operand 12780 states and 21371 transitions. Second operand 4 states. [2020-10-14 09:38:41,677 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-14 09:38:47,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:47,129 INFO L93 Difference]: Finished difference Result 24015 states and 40132 transitions. [2020-10-14 09:38:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:38:47,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-10-14 09:38:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:47,284 INFO L225 Difference]: With dead ends: 24015 [2020-10-14 09:38:47,284 INFO L226 Difference]: Without dead ends: 17957 [2020-10-14 09:38:47,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:38:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17957 states. [2020-10-14 09:38:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17957 to 17955. [2020-10-14 09:38:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17955 states. [2020-10-14 09:38:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17955 states to 17955 states and 29954 transitions. [2020-10-14 09:38:47,882 INFO L78 Accepts]: Start accepts. Automaton has 17955 states and 29954 transitions. Word has length 238 [2020-10-14 09:38:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:47,883 INFO L479 AbstractCegarLoop]: Abstraction has 17955 states and 29954 transitions. [2020-10-14 09:38:47,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 17955 states and 29954 transitions. [2020-10-14 09:38:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 09:38:47,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:47,892 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] [2020-10-14 09:38:47,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:38:47,892 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1440068704, now seen corresponding path program 1 times [2020-10-14 09:38:47,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:47,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257373764] [2020-10-14 09:38:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:38:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:48,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:52,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:52,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 09:38:52,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:38:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 09:38:52,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:52,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:38:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-14 09:38:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:38:52,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:53,735 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:38:53,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:38:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:38:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:38:53,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:38:53,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:38:53,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:38:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:38:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:38:53,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:38:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:38:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:38:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:38:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:38:53,808 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 09:38:53,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257373764] [2020-10-14 09:38:53,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:38:53,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:38:53,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070596725] [2020-10-14 09:38:53,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:38:53,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:38:53,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:38:53,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:53,810 INFO L87 Difference]: Start difference. First operand 17955 states and 29954 transitions. Second operand 4 states. [2020-10-14 09:38:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:38:59,045 INFO L93 Difference]: Finished difference Result 40119 states and 66964 transitions. [2020-10-14 09:38:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:38:59,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-10-14 09:38:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:38:59,097 INFO L225 Difference]: With dead ends: 40119 [2020-10-14 09:38:59,097 INFO L226 Difference]: Without dead ends: 23469 [2020-10-14 09:38:59,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:38:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23469 states. [2020-10-14 09:38:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23469 to 23179. [2020-10-14 09:38:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23179 states. [2020-10-14 09:38:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23179 states to 23179 states and 38490 transitions. [2020-10-14 09:38:59,955 INFO L78 Accepts]: Start accepts. Automaton has 23179 states and 38490 transitions. Word has length 238 [2020-10-14 09:38:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:38:59,955 INFO L479 AbstractCegarLoop]: Abstraction has 23179 states and 38490 transitions. [2020-10-14 09:38:59,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:38:59,955 INFO L276 IsEmpty]: Start isEmpty. Operand 23179 states and 38490 transitions. [2020-10-14 09:38:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 09:38:59,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:38:59,963 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] [2020-10-14 09:38:59,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:38:59,963 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:38:59,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:38:59,964 INFO L82 PathProgramCache]: Analyzing trace with hash -182676414, now seen corresponding path program 1 times [2020-10-14 09:38:59,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:38:59,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14411956] [2020-10-14 09:38:59,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:00,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:01,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:02,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:02,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:05,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:05,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 09:39:05,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:39:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:39:05,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:05,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 09:39:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 09:39:05,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:05,796 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:39:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:05,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:05,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:05,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:05,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:39:05,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:05,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:39:05,912 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 09:39:05,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14411956] [2020-10-14 09:39:05,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:05,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:05,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713502919] [2020-10-14 09:39:05,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:05,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:05,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:05,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:05,915 INFO L87 Difference]: Start difference. First operand 23179 states and 38490 transitions. Second operand 4 states. [2020-10-14 09:39:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:15,946 INFO L93 Difference]: Finished difference Result 68549 states and 113809 transitions. [2020-10-14 09:39:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:39:15,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-10-14 09:39:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:16,017 INFO L225 Difference]: With dead ends: 68549 [2020-10-14 09:39:16,018 INFO L226 Difference]: Without dead ends: 45526 [2020-10-14 09:39:16,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:16,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45526 states. [2020-10-14 09:39:18,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45526 to 45524. [2020-10-14 09:39:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45524 states. [2020-10-14 09:39:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45524 states to 45524 states and 75386 transitions. [2020-10-14 09:39:18,820 INFO L78 Accepts]: Start accepts. Automaton has 45524 states and 75386 transitions. Word has length 239 [2020-10-14 09:39:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:18,820 INFO L479 AbstractCegarLoop]: Abstraction has 45524 states and 75386 transitions. [2020-10-14 09:39:18,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 45524 states and 75386 transitions. [2020-10-14 09:39:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:39:18,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:18,834 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] [2020-10-14 09:39:18,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:39:18,834 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:18,835 INFO L82 PathProgramCache]: Analyzing trace with hash -271335086, now seen corresponding path program 1 times [2020-10-14 09:39:18,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:18,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736491716] [2020-10-14 09:39:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:19,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:19,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:19,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:20,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:23,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:23,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:39:23,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:39:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 09:39:23,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:23,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:39:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:39:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:24,787 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:39:24,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:24,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:24,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:24,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:39:24,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:24,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:24,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:24,858 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 09:39:24,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736491716] [2020-10-14 09:39:24,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:24,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:24,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824648411] [2020-10-14 09:39:24,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:24,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:24,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:24,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:24,860 INFO L87 Difference]: Start difference. First operand 45524 states and 75386 transitions. Second operand 4 states. [2020-10-14 09:39:36,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:36,089 INFO L93 Difference]: Finished difference Result 136295 states and 225656 transitions. [2020-10-14 09:39:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:39:36,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:39:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:36,268 INFO L225 Difference]: With dead ends: 136295 [2020-10-14 09:39:36,268 INFO L226 Difference]: Without dead ends: 90913 [2020-10-14 09:39:36,358 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 09:39:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90913 states. [2020-10-14 09:39:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90913 to 45571. [2020-10-14 09:39:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45571 states. [2020-10-14 09:39:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45571 states to 45571 states and 75460 transitions. [2020-10-14 09:39:40,492 INFO L78 Accepts]: Start accepts. Automaton has 45571 states and 75460 transitions. Word has length 240 [2020-10-14 09:39:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:40,492 INFO L479 AbstractCegarLoop]: Abstraction has 45571 states and 75460 transitions. [2020-10-14 09:39:40,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:40,493 INFO L276 IsEmpty]: Start isEmpty. Operand 45571 states and 75460 transitions. [2020-10-14 09:39:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:39:40,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:40,503 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] [2020-10-14 09:39:40,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:39:40,504 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:40,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:40,504 INFO L82 PathProgramCache]: Analyzing trace with hash -2137652443, now seen corresponding path program 1 times [2020-10-14 09:39:40,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:40,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909815003] [2020-10-14 09:39:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:40,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:41,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:42,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:45,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:45,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:39:45,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:39:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-14 09:39:45,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:45,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:39:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-14 09:39:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:39:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:46,438 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:39:46,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:39:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:46,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:39:46,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:39:46,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:39:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:39:46,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:39:46,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:39:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:39:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:39:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:39:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:39:46,505 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 09:39:46,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909815003] [2020-10-14 09:39:46,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:39:46,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:39:46,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897284033] [2020-10-14 09:39:46,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:39:46,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:39:46,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:39:46,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:46,507 INFO L87 Difference]: Start difference. First operand 45571 states and 75460 transitions. Second operand 4 states. [2020-10-14 09:39:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:39:54,153 INFO L93 Difference]: Finished difference Result 108871 states and 180534 transitions. [2020-10-14 09:39:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:39:54,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:39:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:39:54,251 INFO L225 Difference]: With dead ends: 108871 [2020-10-14 09:39:54,251 INFO L226 Difference]: Without dead ends: 65685 [2020-10-14 09:39:54,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:39:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65685 states. [2020-10-14 09:39:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65685 to 64531. [2020-10-14 09:39:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64531 states. [2020-10-14 09:39:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64531 states to 64531 states and 106072 transitions. [2020-10-14 09:39:56,602 INFO L78 Accepts]: Start accepts. Automaton has 64531 states and 106072 transitions. Word has length 240 [2020-10-14 09:39:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:39:56,602 INFO L479 AbstractCegarLoop]: Abstraction has 64531 states and 106072 transitions. [2020-10-14 09:39:56,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:39:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand 64531 states and 106072 transitions. [2020-10-14 09:39:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:39:56,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:56,610 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] [2020-10-14 09:39:56,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:39:56,610 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:56,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:56,610 INFO L82 PathProgramCache]: Analyzing trace with hash 435524292, now seen corresponding path program 1 times [2020-10-14 09:39:56,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:56,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795246535] [2020-10-14 09:39:56,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:39:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:56,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:58,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:58,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:58,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:39:58,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:01,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:01,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:40:01,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:40:01,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 09:40:01,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:01,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 09:40:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:40:01,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:02,441 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:40:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:02,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:02,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:02,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:40:02,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:02,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:02,508 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 09:40:02,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795246535] [2020-10-14 09:40:02,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:02,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:02,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143338317] [2020-10-14 09:40:02,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:02,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:02,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:02,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:02,510 INFO L87 Difference]: Start difference. First operand 64531 states and 106072 transitions. Second operand 4 states. [2020-10-14 09:40:03,235 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-14 09:40:11,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:11,456 INFO L93 Difference]: Finished difference Result 123527 states and 203498 transitions. [2020-10-14 09:40:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:11,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:40:11,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:11,575 INFO L225 Difference]: With dead ends: 123527 [2020-10-14 09:40:11,576 INFO L226 Difference]: Without dead ends: 82165 [2020-10-14 09:40:11,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-10-14 09:40:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 82163. [2020-10-14 09:40:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82163 states. [2020-10-14 09:40:16,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82163 states to 82163 states and 135040 transitions. [2020-10-14 09:40:16,887 INFO L78 Accepts]: Start accepts. Automaton has 82163 states and 135040 transitions. Word has length 240 [2020-10-14 09:40:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:16,888 INFO L479 AbstractCegarLoop]: Abstraction has 82163 states and 135040 transitions. [2020-10-14 09:40:16,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 82163 states and 135040 transitions. [2020-10-14 09:40:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 09:40:16,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:16,893 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] [2020-10-14 09:40:16,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:40:16,893 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:16,894 INFO L82 PathProgramCache]: Analyzing trace with hash 281448016, now seen corresponding path program 1 times [2020-10-14 09:40:16,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:16,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564220958] [2020-10-14 09:40:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:17,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:17,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:21,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:21,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 09:40:21,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:40:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 09:40:21,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:21,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:40:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:40:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 09:40:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:22,872 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:40:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:22,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:22,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 09:40:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:22,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:22,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:23,100 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 09:40:23,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564220958] [2020-10-14 09:40:23,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:23,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:40:23,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42727636] [2020-10-14 09:40:23,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:40:23,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:23,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:40:23,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:23,103 INFO L87 Difference]: Start difference. First operand 82163 states and 135040 transitions. Second operand 5 states. [2020-10-14 09:40:39,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:39,104 INFO L93 Difference]: Finished difference Result 244514 states and 402026 transitions. [2020-10-14 09:40:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:39,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-14 09:40:39,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:39,322 INFO L225 Difference]: With dead ends: 244514 [2020-10-14 09:40:39,323 INFO L226 Difference]: Without dead ends: 162580 [2020-10-14 09:40:39,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:40:39,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162580 states. [2020-10-14 09:40:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162580 to 162578. [2020-10-14 09:40:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162578 states. [2020-10-14 09:40:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162578 states to 162578 states and 266708 transitions. [2020-10-14 09:40:49,083 INFO L78 Accepts]: Start accepts. Automaton has 162578 states and 266708 transitions. Word has length 241 [2020-10-14 09:40:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:49,083 INFO L479 AbstractCegarLoop]: Abstraction has 162578 states and 266708 transitions. [2020-10-14 09:40:49,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:40:49,083 INFO L276 IsEmpty]: Start isEmpty. Operand 162578 states and 266708 transitions. [2020-10-14 09:40:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 09:40:49,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:49,093 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] [2020-10-14 09:40:49,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:40:49,093 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:49,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:49,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1557464071, now seen corresponding path program 1 times [2020-10-14 09:40:49,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:49,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849796867] [2020-10-14 09:40:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:49,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking...