/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:07:47,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:07:47,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:07:47,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:07:47,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:07:47,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:07:47,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:07:47,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:07:47,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:07:47,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:07:47,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:07:47,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:07:47,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:07:47,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:07:47,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:07:47,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:07:47,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:07:47,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:07:47,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:07:47,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:07:47,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:07:47,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:07:47,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:07:47,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:07:47,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:07:47,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:07:47,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:07:47,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:07:47,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:07:47,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:07:47,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:07:47,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:07:47,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:07:47,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:07:47,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:07:47,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:07:47,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:07:47,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:07:47,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:07:47,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:07:47,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:07:47,276 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 [2020-10-15 03:07:47,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:07:47,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:07:47,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:07:47,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:07:47,318 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:07:47,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:07:47,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:07:47,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:07:47,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:07:47,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:07:47,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:07:47,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:07:47,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:07:47,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:07:47,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:07:47,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:07:47,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:07:47,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:07:47,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:07:47,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:07:47,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:07:47,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:07:47,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:07:47,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:07:47,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:07:47,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:07:47,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:07:47,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:07:47,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:07:47,325 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:07:47,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:07:47,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:07:47,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:07:47,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:07:47,737 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:07:47,738 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:07:47,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53c913ce9/97f7a2502d5d4b599bdb68a213b44d04/FLAGfc3d85835 [2020-10-15 03:07:48,409 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:07:48,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:07:48,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53c913ce9/97f7a2502d5d4b599bdb68a213b44d04/FLAGfc3d85835 [2020-10-15 03:07:48,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53c913ce9/97f7a2502d5d4b599bdb68a213b44d04 [2020-10-15 03:07:48,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:07:48,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:07:48,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:07:48,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:07:48,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:07:48,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:48" (1/1) ... [2020-10-15 03:07:48,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:48, skipping insertion in model container [2020-10-15 03:07:48,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:48" (1/1) ... [2020-10-15 03:07:48,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:07:48,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:07:49,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:07:49,492 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:07:49,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:07:49,666 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:07:49,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49 WrapperNode [2020-10-15 03:07:49,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:07:49,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:07:49,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:07:49,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:07:49,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49" (1/1) ... [2020-10-15 03:07:49,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49" (1/1) ... [2020-10-15 03:07:49,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49" (1/1) ... [2020-10-15 03:07:49,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49" (1/1) ... [2020-10-15 03:07:49,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49" (1/1) ... [2020-10-15 03:07:49,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49" (1/1) ... [2020-10-15 03:07:49,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49" (1/1) ... [2020-10-15 03:07:49,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:07:49,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:07:49,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:07:49,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:07:49,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49" (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 [2020-10-15 03:07:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:07:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:07:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:07:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:07:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:07:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:07:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:07:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:07:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:07:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:07:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:07:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:07:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:07:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:07:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:07:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:07:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:07:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:07:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:07:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:07:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:07:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:07:51,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:07:51,550 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:07:51,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:51 BoogieIcfgContainer [2020-10-15 03:07:51,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:07:51,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:07:51,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:07:51,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:07:51,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:48" (1/3) ... [2020-10-15 03:07:51,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326a4975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:51, skipping insertion in model container [2020-10-15 03:07:51,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:49" (2/3) ... [2020-10-15 03:07:51,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326a4975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:51, skipping insertion in model container [2020-10-15 03:07:51,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:51" (3/3) ... [2020-10-15 03:07:51,566 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:07:51,578 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:07:51,586 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:07:51,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:07:51,630 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:07:51,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:07:51,630 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:07:51,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:07:51,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:07:51,631 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:07:51,631 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:07:51,631 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:07:51,658 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-15 03:07:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:07:51,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:51,676 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] [2020-10-15 03:07:51,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:51,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:51,683 INFO L82 PathProgramCache]: Analyzing trace with hash -425912833, now seen corresponding path program 1 times [2020-10-15 03:07:51,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:51,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329117442] [2020-10-15 03:07:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:52,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:52,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:57,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:57,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:07:57,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:07:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:07:57,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:57,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:07:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 03:07:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 03:07:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:07:58,159 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:07:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:58,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:58,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:58,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:58,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:07:58,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:58,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:58,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:58,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329117442] [2020-10-15 03:07:58,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:58,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:07:58,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049986034] [2020-10-15 03:07:58,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:07:58,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:58,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:07:58,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:07:58,313 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 4 states. [2020-10-15 03:07:58,844 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-15 03:08:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:01,367 INFO L93 Difference]: Finished difference Result 596 states and 1028 transitions. [2020-10-15 03:08:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:01,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-10-15 03:08:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:01,417 INFO L225 Difference]: With dead ends: 596 [2020-10-15 03:08:01,417 INFO L226 Difference]: Without dead ends: 450 [2020-10-15 03:08:01,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:01,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-15 03:08:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 447. [2020-10-15 03:08:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-15 03:08:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 738 transitions. [2020-10-15 03:08:01,521 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 738 transitions. Word has length 114 [2020-10-15 03:08:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:01,523 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 738 transitions. [2020-10-15 03:08:01,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:08:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 738 transitions. [2020-10-15 03:08:01,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 03:08:01,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:01,528 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] [2020-10-15 03:08:01,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:08:01,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:01,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1338825449, now seen corresponding path program 1 times [2020-10-15 03:08:01,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:01,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364103504] [2020-10-15 03:08:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:01,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:02,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:06,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:06,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 03:08:06,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:08:06,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-15 03:08:06,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:06,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:06,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 03:08:06,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:08:07,196 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:08:07,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:07,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:07,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:07,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:07,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:08:07,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:07,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:07,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:07,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364103504] [2020-10-15 03:08:07,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:07,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:07,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012023625] [2020-10-15 03:08:07,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:07,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:07,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:07,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:07,293 INFO L87 Difference]: Start difference. First operand 447 states and 738 transitions. Second operand 5 states. [2020-10-15 03:08:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:09,995 INFO L93 Difference]: Finished difference Result 1303 states and 2155 transitions. [2020-10-15 03:08:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:09,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-15 03:08:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:10,006 INFO L225 Difference]: With dead ends: 1303 [2020-10-15 03:08:10,006 INFO L226 Difference]: Without dead ends: 871 [2020-10-15 03:08:10,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-15 03:08:10,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2020-10-15 03:08:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2020-10-15 03:08:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1429 transitions. [2020-10-15 03:08:10,099 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1429 transitions. Word has length 117 [2020-10-15 03:08:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:10,099 INFO L479 AbstractCegarLoop]: Abstraction has 869 states and 1429 transitions. [2020-10-15 03:08:10,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:10,100 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1429 transitions. [2020-10-15 03:08:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:08:10,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:10,103 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] [2020-10-15 03:08:10,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:08:10,104 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:10,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:10,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1611945323, now seen corresponding path program 1 times [2020-10-15 03:08:10,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:10,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486042543] [2020-10-15 03:08:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:10,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:10,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:11,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:15,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:15,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:08:15,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:08:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-15 03:08:15,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:15,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 03:08:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:15,835 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:08:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:15,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:15,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:15,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:15,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:08:15,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:15,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:15,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:15,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:15,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486042543] [2020-10-15 03:08:15,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:15,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:15,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119487665] [2020-10-15 03:08:15,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:15,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:15,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:15,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:15,927 INFO L87 Difference]: Start difference. First operand 869 states and 1429 transitions. Second operand 5 states. [2020-10-15 03:08:18,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:18,569 INFO L93 Difference]: Finished difference Result 2520 states and 4145 transitions. [2020-10-15 03:08:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:18,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:08:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:18,582 INFO L225 Difference]: With dead ends: 2520 [2020-10-15 03:08:18,582 INFO L226 Difference]: Without dead ends: 1704 [2020-10-15 03:08:18,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:18,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-10-15 03:08:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1702. [2020-10-15 03:08:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2020-10-15 03:08:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2789 transitions. [2020-10-15 03:08:18,753 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2789 transitions. Word has length 119 [2020-10-15 03:08:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:18,754 INFO L479 AbstractCegarLoop]: Abstraction has 1702 states and 2789 transitions. [2020-10-15 03:08:18,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:18,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2789 transitions. [2020-10-15 03:08:18,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:08:18,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:18,762 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] [2020-10-15 03:08:18,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:08:18,762 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:18,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:18,763 INFO L82 PathProgramCache]: Analyzing trace with hash -2137979503, now seen corresponding path program 1 times [2020-10-15 03:08:18,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:18,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229402383] [2020-10-15 03:08:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:18,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:19,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:19,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:21,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:21,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:23,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:23,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:08:23,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:08:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:08:23,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:23,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 03:08:23,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:24,462 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:08:24,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:24,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:24,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:24,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:24,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:24,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:08:24,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:24,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:24,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229402383] [2020-10-15 03:08:24,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:24,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:24,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259126423] [2020-10-15 03:08:24,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:24,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:24,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:24,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:24,588 INFO L87 Difference]: Start difference. First operand 1702 states and 2789 transitions. Second operand 5 states. [2020-10-15 03:08:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:27,281 INFO L93 Difference]: Finished difference Result 4834 states and 7895 transitions. [2020-10-15 03:08:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:27,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:08:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:27,300 INFO L225 Difference]: With dead ends: 4834 [2020-10-15 03:08:27,300 INFO L226 Difference]: Without dead ends: 3264 [2020-10-15 03:08:27,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:27,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2020-10-15 03:08:27,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3262. [2020-10-15 03:08:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3262 states. [2020-10-15 03:08:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 5299 transitions. [2020-10-15 03:08:27,513 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 5299 transitions. Word has length 119 [2020-10-15 03:08:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:27,514 INFO L479 AbstractCegarLoop]: Abstraction has 3262 states and 5299 transitions. [2020-10-15 03:08:27,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 5299 transitions. [2020-10-15 03:08:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:08:27,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:27,523 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] [2020-10-15 03:08:27,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:08:27,523 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:27,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:27,523 INFO L82 PathProgramCache]: Analyzing trace with hash -657197597, now seen corresponding path program 1 times [2020-10-15 03:08:27,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:27,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881498075] [2020-10-15 03:08:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:27,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:27,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:32,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:32,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:08:32,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:08:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 03:08:32,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:32,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-15 03:08:32,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:33,165 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:08:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:33,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:33,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:33,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:33,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:08:33,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:33,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:33,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881498075] [2020-10-15 03:08:33,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:33,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:33,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019417882] [2020-10-15 03:08:33,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:33,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:33,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:33,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:33,246 INFO L87 Difference]: Start difference. First operand 3262 states and 5299 transitions. Second operand 5 states. [2020-10-15 03:08:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:35,977 INFO L93 Difference]: Finished difference Result 9470 states and 15361 transitions. [2020-10-15 03:08:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:35,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:08:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:36,012 INFO L225 Difference]: With dead ends: 9470 [2020-10-15 03:08:36,012 INFO L226 Difference]: Without dead ends: 6340 [2020-10-15 03:08:36,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2020-10-15 03:08:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 6338. [2020-10-15 03:08:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6338 states. [2020-10-15 03:08:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6338 states to 6338 states and 10225 transitions. [2020-10-15 03:08:36,449 INFO L78 Accepts]: Start accepts. Automaton has 6338 states and 10225 transitions. Word has length 120 [2020-10-15 03:08:36,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:36,450 INFO L479 AbstractCegarLoop]: Abstraction has 6338 states and 10225 transitions. [2020-10-15 03:08:36,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:36,450 INFO L276 IsEmpty]: Start isEmpty. Operand 6338 states and 10225 transitions. [2020-10-15 03:08:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:08:36,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:36,466 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] [2020-10-15 03:08:36,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:08:36,467 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:36,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:36,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1421452122, now seen corresponding path program 1 times [2020-10-15 03:08:36,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:36,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700992275] [2020-10-15 03:08:36,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:36,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:38,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:41,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:41,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:08:41,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:08:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:08:41,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:41,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 03:08:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:42,022 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:08:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:42,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:42,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:42,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:08:42,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:42,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:42,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700992275] [2020-10-15 03:08:42,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:42,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:42,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520152026] [2020-10-15 03:08:42,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:42,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:42,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:42,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:42,103 INFO L87 Difference]: Start difference. First operand 6338 states and 10225 transitions. Second operand 5 states. [2020-10-15 03:08:45,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:45,070 INFO L93 Difference]: Finished difference Result 18270 states and 29403 transitions. [2020-10-15 03:08:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:45,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-15 03:08:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:45,159 INFO L225 Difference]: With dead ends: 18270 [2020-10-15 03:08:45,160 INFO L226 Difference]: Without dead ends: 12464 [2020-10-15 03:08:45,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12464 states. [2020-10-15 03:08:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12464 to 12462. [2020-10-15 03:08:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12462 states. [2020-10-15 03:08:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12462 states to 12462 states and 19985 transitions. [2020-10-15 03:08:46,191 INFO L78 Accepts]: Start accepts. Automaton has 12462 states and 19985 transitions. Word has length 121 [2020-10-15 03:08:46,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:46,192 INFO L479 AbstractCegarLoop]: Abstraction has 12462 states and 19985 transitions. [2020-10-15 03:08:46,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12462 states and 19985 transitions. [2020-10-15 03:08:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:08:46,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:46,223 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] [2020-10-15 03:08:46,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:08:46,224 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:46,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1338287595, now seen corresponding path program 1 times [2020-10-15 03:08:46,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:46,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738243362] [2020-10-15 03:08:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:49,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:49,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:51,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:51,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:08:51,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:08:51,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:08:51,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:51,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:51,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:08:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:51,925 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:08:51,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:51,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:51,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:51,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:08:51,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:51,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:52,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738243362] [2020-10-15 03:08:52,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:52,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:52,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693300878] [2020-10-15 03:08:52,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:52,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:52,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:52,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:52,037 INFO L87 Difference]: Start difference. First operand 12462 states and 19985 transitions. Second operand 5 states. [2020-10-15 03:08:55,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:55,494 INFO L93 Difference]: Finished difference Result 35914 states and 57539 transitions. [2020-10-15 03:08:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:55,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-15 03:08:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:55,605 INFO L225 Difference]: With dead ends: 35914 [2020-10-15 03:08:55,605 INFO L226 Difference]: Without dead ends: 24056 [2020-10-15 03:08:55,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24056 states. [2020-10-15 03:08:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24056 to 24054. [2020-10-15 03:08:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24054 states. [2020-10-15 03:08:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24054 states to 24054 states and 38273 transitions. [2020-10-15 03:08:57,041 INFO L78 Accepts]: Start accepts. Automaton has 24054 states and 38273 transitions. Word has length 121 [2020-10-15 03:08:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:57,042 INFO L479 AbstractCegarLoop]: Abstraction has 24054 states and 38273 transitions. [2020-10-15 03:08:57,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:57,043 INFO L276 IsEmpty]: Start isEmpty. Operand 24054 states and 38273 transitions. [2020-10-15 03:08:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 03:08:57,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:57,083 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] [2020-10-15 03:08:57,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:08:57,084 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:57,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:57,084 INFO L82 PathProgramCache]: Analyzing trace with hash -899864721, now seen corresponding path program 1 times [2020-10-15 03:08:57,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:57,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565725700] [2020-10-15 03:08:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:02,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:02,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 03:09:02,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:09:02,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:09:02,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:02,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:09:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:09:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:09:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:02,763 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:09:02,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:02,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:02,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:02,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:09:02,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:02,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:09:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:09:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:02,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565725700] [2020-10-15 03:09:02,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:02,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:09:02,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340573016] [2020-10-15 03:09:02,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:09:02,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:02,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:09:02,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:09:02,841 INFO L87 Difference]: Start difference. First operand 24054 states and 38273 transitions. Second operand 8 states. [2020-10-15 03:09:03,299 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-15 03:09:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:08,739 INFO L93 Difference]: Finished difference Result 53510 states and 86615 transitions. [2020-10-15 03:09:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:09:08,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-15 03:09:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:08,842 INFO L225 Difference]: With dead ends: 53510 [2020-10-15 03:09:08,842 INFO L226 Difference]: Without dead ends: 40424 [2020-10-15 03:09:08,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:09:08,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40424 states. [2020-10-15 03:09:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40424 to 24342. [2020-10-15 03:09:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24342 states. [2020-10-15 03:09:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24342 states to 24342 states and 38465 transitions. [2020-10-15 03:09:10,798 INFO L78 Accepts]: Start accepts. Automaton has 24342 states and 38465 transitions. Word has length 122 [2020-10-15 03:09:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:10,799 INFO L479 AbstractCegarLoop]: Abstraction has 24342 states and 38465 transitions. [2020-10-15 03:09:10,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:09:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 24342 states and 38465 transitions. [2020-10-15 03:09:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 03:09:10,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:10,882 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] [2020-10-15 03:09:10,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:09:10,883 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:10,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1051185194, now seen corresponding path program 1 times [2020-10-15 03:09:10,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:10,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491223722] [2020-10-15 03:09:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:11,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:15,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:15,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 03:09:15,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:09:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:09:15,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:15,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:09:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:09:15,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 03:09:15,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:16,386 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:09:16,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:16,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:16,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:16,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:09:16,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:16,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:09:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:09:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:16,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491223722] [2020-10-15 03:09:16,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:16,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:09:16,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549872246] [2020-10-15 03:09:16,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:09:16,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:16,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:09:16,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:09:16,469 INFO L87 Difference]: Start difference. First operand 24342 states and 38465 transitions. Second operand 8 states. [2020-10-15 03:09:16,886 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-15 03:09:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:22,407 INFO L93 Difference]: Finished difference Result 45826 states and 73667 transitions. [2020-10-15 03:09:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:09:22,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-15 03:09:22,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:22,481 INFO L225 Difference]: With dead ends: 45826 [2020-10-15 03:09:22,481 INFO L226 Difference]: Without dead ends: 42000 [2020-10-15 03:09:22,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:09:22,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42000 states. [2020-10-15 03:09:24,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42000 to 24534. [2020-10-15 03:09:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24534 states. [2020-10-15 03:09:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24534 states to 24534 states and 38753 transitions. [2020-10-15 03:09:24,254 INFO L78 Accepts]: Start accepts. Automaton has 24534 states and 38753 transitions. Word has length 122 [2020-10-15 03:09:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:24,256 INFO L479 AbstractCegarLoop]: Abstraction has 24534 states and 38753 transitions. [2020-10-15 03:09:24,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:09:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 24534 states and 38753 transitions. [2020-10-15 03:09:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 03:09:24,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:24,281 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] [2020-10-15 03:09:24,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:09:24,281 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:24,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1172598695, now seen corresponding path program 1 times [2020-10-15 03:09:24,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:24,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692625342] [2020-10-15 03:09:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:24,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:24,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:28,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:28,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 03:09:28,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:09:28,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4006 [2020-10-15 03:09:28,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:28,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:09:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 03:09:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:09:28,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:28,806 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:09:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:28,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:28,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:28,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:09:28,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:28,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:09:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:28,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692625342] [2020-10-15 03:09:28,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:28,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:09:28,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465072821] [2020-10-15 03:09:28,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:09:28,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:28,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:09:28,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:09:28,862 INFO L87 Difference]: Start difference. First operand 24534 states and 38753 transitions. Second operand 4 states. [2020-10-15 03:09:29,468 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-15 03:09:34,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:34,790 INFO L93 Difference]: Finished difference Result 52058 states and 83555 transitions. [2020-10-15 03:09:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:34,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-15 03:09:34,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:34,848 INFO L225 Difference]: With dead ends: 52058 [2020-10-15 03:09:34,848 INFO L226 Difference]: Without dead ends: 37752 [2020-10-15 03:09:34,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37752 states. [2020-10-15 03:09:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37752 to 37622. [2020-10-15 03:09:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37622 states. [2020-10-15 03:09:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37622 states to 37622 states and 59777 transitions. [2020-10-15 03:09:37,706 INFO L78 Accepts]: Start accepts. Automaton has 37622 states and 59777 transitions. Word has length 122 [2020-10-15 03:09:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:37,706 INFO L479 AbstractCegarLoop]: Abstraction has 37622 states and 59777 transitions. [2020-10-15 03:09:37,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:09:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 37622 states and 59777 transitions. [2020-10-15 03:09:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 03:09:37,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:37,739 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] [2020-10-15 03:09:37,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:09:37,739 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:37,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2106619791, now seen corresponding path program 1 times [2020-10-15 03:09:37,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:37,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429835779] [2020-10-15 03:09:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:38,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:38,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:38,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:42,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:42,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 03:09:42,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:09:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 03:09:42,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:42,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:09:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:09:42,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 03:09:42,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:43,465 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:09:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:43,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:43,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:43,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:43,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:09:43,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:43,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:43,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429835779] [2020-10-15 03:09:43,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:43,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:09:43,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665570472] [2020-10-15 03:09:43,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:09:43,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:43,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:09:43,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:43,520 INFO L87 Difference]: Start difference. First operand 37622 states and 59777 transitions. Second operand 5 states. [2020-10-15 03:09:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:53,906 INFO L93 Difference]: Finished difference Result 109058 states and 172967 transitions. [2020-10-15 03:09:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:53,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 03:09:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:54,013 INFO L225 Difference]: With dead ends: 109058 [2020-10-15 03:09:54,013 INFO L226 Difference]: Without dead ends: 73512 [2020-10-15 03:09:54,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:09:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73512 states. [2020-10-15 03:10:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73512 to 73510. [2020-10-15 03:10:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73510 states. [2020-10-15 03:10:01,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73510 states to 73510 states and 116069 transitions. [2020-10-15 03:10:01,216 INFO L78 Accepts]: Start accepts. Automaton has 73510 states and 116069 transitions. Word has length 126 [2020-10-15 03:10:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:01,217 INFO L479 AbstractCegarLoop]: Abstraction has 73510 states and 116069 transitions. [2020-10-15 03:10:01,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:10:01,217 INFO L276 IsEmpty]: Start isEmpty. Operand 73510 states and 116069 transitions. [2020-10-15 03:10:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 03:10:01,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:01,274 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] [2020-10-15 03:10:01,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:10:01,275 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:01,275 INFO L82 PathProgramCache]: Analyzing trace with hash -370100367, now seen corresponding path program 1 times [2020-10-15 03:10:01,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:01,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136285508] [2020-10-15 03:10:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:01,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:01,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:01,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:06,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:06,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 03:10:06,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:10:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 03:10:06,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:06,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:10:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-15 03:10:06,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:10:06,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:06,758 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:10:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:06,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:06,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:06,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:06,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:10:06,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:06,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:06,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:10:06,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136285508] [2020-10-15 03:10:06,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:06,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:10:06,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456140920] [2020-10-15 03:10:06,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:10:06,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:06,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:10:06,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:10:06,803 INFO L87 Difference]: Start difference. First operand 73510 states and 116069 transitions. Second operand 4 states. [2020-10-15 03:10:07,242 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-15 03:10:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:21,637 INFO L93 Difference]: Finished difference Result 176170 states and 280679 transitions. [2020-10-15 03:10:21,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:21,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-15 03:10:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:21,867 INFO L225 Difference]: With dead ends: 176170 [2020-10-15 03:10:21,868 INFO L226 Difference]: Without dead ends: 122664 [2020-10-15 03:10:21,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:22,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122664 states. [2020-10-15 03:10:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122664 to 122150. [2020-10-15 03:10:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122150 states. [2020-10-15 03:10:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122150 states to 122150 states and 192869 transitions. [2020-10-15 03:10:36,198 INFO L78 Accepts]: Start accepts. Automaton has 122150 states and 192869 transitions. Word has length 128 [2020-10-15 03:10:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:10:36,200 INFO L479 AbstractCegarLoop]: Abstraction has 122150 states and 192869 transitions. [2020-10-15 03:10:36,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:10:36,200 INFO L276 IsEmpty]: Start isEmpty. Operand 122150 states and 192869 transitions. [2020-10-15 03:10:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 03:10:36,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:10:36,265 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] [2020-10-15 03:10:36,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:10:36,266 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:10:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:10:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash 665170702, now seen corresponding path program 1 times [2020-10-15 03:10:36,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:10:36,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022072553] [2020-10-15 03:10:36,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:10:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:36,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:36,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:36,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:39,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:41,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 03:10:41,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:10:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:10:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:41,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:10:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 03:10:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 03:10:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:10:41,803 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:10:41,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:10:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:10:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:10:41,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:10:41,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:10:41,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:10:41,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:10:41,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:10:41,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:10:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:10:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:10:41,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:10:41,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:10:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:10:41,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022072553] [2020-10-15 03:10:41,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:10:41,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:10:41,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476193823] [2020-10-15 03:10:41,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:10:41,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:10:41,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:10:41,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:10:41,868 INFO L87 Difference]: Start difference. First operand 122150 states and 192869 transitions. Second operand 5 states. [2020-10-15 03:11:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:11:11,977 INFO L93 Difference]: Finished difference Result 343234 states and 540695 transitions. [2020-10-15 03:11:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:11:11,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-15 03:11:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:11:12,424 INFO L225 Difference]: With dead ends: 343234 [2020-10-15 03:11:12,424 INFO L226 Difference]: Without dead ends: 228352 [2020-10-15 03:11:12,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:11:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228352 states. [2020-10-15 03:11:31,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228352 to 128062. [2020-10-15 03:11:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128062 states. [2020-10-15 03:11:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128062 states to 128062 states and 202541 transitions. [2020-10-15 03:11:32,065 INFO L78 Accepts]: Start accepts. Automaton has 128062 states and 202541 transitions. Word has length 132 [2020-10-15 03:11:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:11:32,065 INFO L479 AbstractCegarLoop]: Abstraction has 128062 states and 202541 transitions. [2020-10-15 03:11:32,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:11:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 128062 states and 202541 transitions. [2020-10-15 03:11:32,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 03:11:32,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:32,132 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] [2020-10-15 03:11:32,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:11:32,132 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:32,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:32,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1836941616, now seen corresponding path program 1 times [2020-10-15 03:11:32,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:32,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058158825] [2020-10-15 03:11:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:32,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:34,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:34,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:37,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:37,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 03:11:37,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:11:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:11:37,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:37,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:11:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:11:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-15 03:11:37,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:37,607 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:11:37,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:11:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:37,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:37,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:37,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:11:37,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:11:37,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:11:37,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:37,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:11:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:11:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:11:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:11:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:11:37,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058158825] [2020-10-15 03:11:37,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:11:37,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:11:37,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522623375] [2020-10-15 03:11:37,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:11:37,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:11:37,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:11:37,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:11:37,681 INFO L87 Difference]: Start difference. First operand 128062 states and 202541 transitions. Second operand 5 states.