/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:40:23,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:40:23,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:40:23,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:40:23,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:40:23,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:40:23,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:40:23,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:40:23,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:40:23,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:40:23,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:40:23,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:40:23,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:40:23,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:40:23,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:40:23,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:40:23,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:40:23,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:40:23,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:40:23,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:40:23,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:40:23,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:40:23,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:40:23,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:40:23,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:40:23,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:40:23,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:40:23,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:40:23,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:40:23,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:40:23,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:40:23,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:40:23,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:40:23,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:40:23,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:40:23,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:40:23,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:40:23,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:40:23,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:40:23,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:40:23,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:40:23,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:40:23,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:40:23,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:40:23,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:40:23,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:40:23,306 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:40:23,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:40:23,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:40:23,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:40:23,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:40:23,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:40:23,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:40:23,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:40:23,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:40:23,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:40:23,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:40:23,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:40:23,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:40:23,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:40:23,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:40:23,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:40:23,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:40:23,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:40:23,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:40:23,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:40:23,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:40:23,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:40:23,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:40:23,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:40:23,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:40:23,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:40:23,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:40:23,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:40:23,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:40:23,636 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:40:23,637 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:40:23,638 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 09:40:23,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cd0f1f72/4b3d8aba8f3241cd8620bd47d0925895/FLAG9f204c97c [2020-10-14 09:40:24,290 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:40:24,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 09:40:24,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cd0f1f72/4b3d8aba8f3241cd8620bd47d0925895/FLAG9f204c97c [2020-10-14 09:40:24,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cd0f1f72/4b3d8aba8f3241cd8620bd47d0925895 [2020-10-14 09:40:24,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:40:24,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:40:24,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:40:24,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:40:24,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:40:24,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:40:24" (1/1) ... [2020-10-14 09:40:24,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb5ca15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:24, skipping insertion in model container [2020-10-14 09:40:24,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:40:24" (1/1) ... [2020-10-14 09:40:24,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:40:24,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:40:25,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:40:25,416 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:40:25,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:40:25,868 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:40:25,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25 WrapperNode [2020-10-14 09:40:25,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:40:25,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:40:25,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:40:25,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:40:25,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25" (1/1) ... [2020-10-14 09:40:25,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25" (1/1) ... [2020-10-14 09:40:25,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25" (1/1) ... [2020-10-14 09:40:25,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25" (1/1) ... [2020-10-14 09:40:25,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25" (1/1) ... [2020-10-14 09:40:26,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25" (1/1) ... [2020-10-14 09:40:26,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25" (1/1) ... [2020-10-14 09:40:26,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:40:26,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:40:26,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:40:26,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:40:26,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:40:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:40:26,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:40:26,160 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:40:26,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:40:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:40:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:40:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:40:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:40:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:40:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:40:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:40:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:40:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:40:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:40:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:40:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:40:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:40:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:40:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:40:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:40:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:40:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:40:28,631 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:40:28,631 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:40:28,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:40:28 BoogieIcfgContainer [2020-10-14 09:40:28,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:40:28,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:40:28,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:40:28,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:40:28,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:40:24" (1/3) ... [2020-10-14 09:40:28,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479d8acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:40:28, skipping insertion in model container [2020-10-14 09:40:28,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:40:25" (2/3) ... [2020-10-14 09:40:28,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479d8acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:40:28, skipping insertion in model container [2020-10-14 09:40:28,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:40:28" (3/3) ... [2020-10-14 09:40:28,653 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 09:40:28,663 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:40:28,671 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:40:28,685 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:40:28,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:40:28,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:40:28,711 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:40:28,711 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:40:28,711 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:40:28,711 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:40:28,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:40:28,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:40:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2020-10-14 09:40:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 09:40:28,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:28,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:28,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:28,794 INFO L82 PathProgramCache]: Analyzing trace with hash 558716282, now seen corresponding path program 1 times [2020-10-14 09:40:28,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:28,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422067571] [2020-10-14 09:40:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:30,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:32,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:34,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:34,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 09:40:34,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:40:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5203 [2020-10-14 09:40:34,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:34,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 09:40:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 09:40:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:40:36,508 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:40:36,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:36,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:36,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:36,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:36,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 09:40:36,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:36,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:36,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422067571] [2020-10-14 09:40:36,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:36,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:36,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70671147] [2020-10-14 09:40:36,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:36,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:36,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:36,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:36,727 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2020-10-14 09:40:37,724 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:40:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:43,339 INFO L93 Difference]: Finished difference Result 1209 states and 2150 transitions. [2020-10-14 09:40:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:43,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-14 09:40:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:43,383 INFO L225 Difference]: With dead ends: 1209 [2020-10-14 09:40:43,384 INFO L226 Difference]: Without dead ends: 978 [2020-10-14 09:40:43,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:43,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-14 09:40:43,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 976. [2020-10-14 09:40:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-10-14 09:40:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1694 transitions. [2020-10-14 09:40:43,558 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1694 transitions. Word has length 217 [2020-10-14 09:40:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:43,559 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1694 transitions. [2020-10-14 09:40:43,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:43,560 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1694 transitions. [2020-10-14 09:40:43,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 09:40:43,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:43,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:43,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:40:43,567 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:43,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:43,567 INFO L82 PathProgramCache]: Analyzing trace with hash -103429761, now seen corresponding path program 1 times [2020-10-14 09:40:43,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:43,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863859145] [2020-10-14 09:40:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:44,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:46,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:48,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:48,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 09:40:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:40:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 09:40:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:48,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-14 09:40:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 09:40:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:50,099 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:40:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:50,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:50,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:40:50,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:50,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:40:50,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863859145] [2020-10-14 09:40:50,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:50,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:50,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672322592] [2020-10-14 09:40:50,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:50,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:50,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:50,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:50,232 INFO L87 Difference]: Start difference. First operand 976 states and 1694 transitions. Second operand 4 states. [2020-10-14 09:40:51,093 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:40:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:56,385 INFO L93 Difference]: Finished difference Result 1800 states and 3094 transitions. [2020-10-14 09:40:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:56,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2020-10-14 09:40:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:56,396 INFO L225 Difference]: With dead ends: 1800 [2020-10-14 09:40:56,396 INFO L226 Difference]: Without dead ends: 1376 [2020-10-14 09:40:56,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-14 09:40:56,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1374. [2020-10-14 09:40:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-10-14 09:40:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 2369 transitions. [2020-10-14 09:40:56,456 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 2369 transitions. Word has length 221 [2020-10-14 09:40:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:56,457 INFO L479 AbstractCegarLoop]: Abstraction has 1374 states and 2369 transitions. [2020-10-14 09:40:56,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 2369 transitions. [2020-10-14 09:40:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 09:40:56,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:56,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:56,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:40:56,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:56,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:56,463 INFO L82 PathProgramCache]: Analyzing trace with hash 10460420, now seen corresponding path program 1 times [2020-10-14 09:40:56,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:56,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848359015] [2020-10-14 09:40:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:58,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:58,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:01,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:01,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:01,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 09:41:01,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:41:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 09:41:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:01,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-14 09:41:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 09:41:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:41:03,071 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:41:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:03,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:03,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:03,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:03,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 09:41:03,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:03,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:41:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:03,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848359015] [2020-10-14 09:41:03,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:03,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:03,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586192537] [2020-10-14 09:41:03,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:03,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:03,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:03,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:03,290 INFO L87 Difference]: Start difference. First operand 1374 states and 2369 transitions. Second operand 4 states. [2020-10-14 09:41:04,275 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:41:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:10,089 INFO L93 Difference]: Finished difference Result 2970 states and 5075 transitions. [2020-10-14 09:41:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:41:10,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-14 09:41:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:10,102 INFO L225 Difference]: With dead ends: 2970 [2020-10-14 09:41:10,103 INFO L226 Difference]: Without dead ends: 2148 [2020-10-14 09:41:10,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:41:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2020-10-14 09:41:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2146. [2020-10-14 09:41:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2146 states. [2020-10-14 09:41:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3673 transitions. [2020-10-14 09:41:10,184 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3673 transitions. Word has length 225 [2020-10-14 09:41:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:10,189 INFO L479 AbstractCegarLoop]: Abstraction has 2146 states and 3673 transitions. [2020-10-14 09:41:10,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3673 transitions. [2020-10-14 09:41:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 09:41:10,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:10,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:10,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:41:10,195 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:10,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash -756733175, now seen corresponding path program 1 times [2020-10-14 09:41:10,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:10,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120389232] [2020-10-14 09:41:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:11,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:15,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:15,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 09:41:15,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:41:15,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:41:15,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:15,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-14 09:41:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 09:41:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:41:16,355 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:41:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:16,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:16,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:41:16,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:16,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:41:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:16,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120389232] [2020-10-14 09:41:16,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:16,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:16,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112675920] [2020-10-14 09:41:16,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:16,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:16,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:16,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:16,465 INFO L87 Difference]: Start difference. First operand 2146 states and 3673 transitions. Second operand 4 states. [2020-10-14 09:41:17,342 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:41:22,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:22,251 INFO L93 Difference]: Finished difference Result 5238 states and 8899 transitions. [2020-10-14 09:41:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:41:22,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2020-10-14 09:41:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:22,273 INFO L225 Difference]: With dead ends: 5238 [2020-10-14 09:41:22,273 INFO L226 Difference]: Without dead ends: 3644 [2020-10-14 09:41:22,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:41:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-10-14 09:41:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3642. [2020-10-14 09:41:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3642 states. [2020-10-14 09:41:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 6189 transitions. [2020-10-14 09:41:22,404 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 6189 transitions. Word has length 229 [2020-10-14 09:41:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:22,405 INFO L479 AbstractCegarLoop]: Abstraction has 3642 states and 6189 transitions. [2020-10-14 09:41:22,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 6189 transitions. [2020-10-14 09:41:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 09:41:22,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:22,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:22,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:41:22,411 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:22,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:22,412 INFO L82 PathProgramCache]: Analyzing trace with hash 2091208334, now seen corresponding path program 1 times [2020-10-14 09:41:22,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:22,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047444739] [2020-10-14 09:41:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:23,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:23,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:24,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:27,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:27,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 09:41:27,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:41:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 09:41:27,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:27,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 09:41:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:41:27,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:28,485 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:41:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:28,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:28,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:28,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:28,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:41:28,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:28,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:28,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047444739] [2020-10-14 09:41:28,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:28,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:28,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933520630] [2020-10-14 09:41:28,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:28,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:28,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:28,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:28,566 INFO L87 Difference]: Start difference. First operand 3642 states and 6189 transitions. Second operand 4 states. [2020-10-14 09:41:29,462 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:41:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:34,383 INFO L93 Difference]: Finished difference Result 9598 states and 16207 transitions. [2020-10-14 09:41:34,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:41:34,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 233 [2020-10-14 09:41:34,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:34,425 INFO L225 Difference]: With dead ends: 9598 [2020-10-14 09:41:34,425 INFO L226 Difference]: Without dead ends: 6508 [2020-10-14 09:41:34,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:41:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2020-10-14 09:41:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6506. [2020-10-14 09:41:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6506 states. [2020-10-14 09:41:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6506 states to 6506 states and 10909 transitions. [2020-10-14 09:41:34,687 INFO L78 Accepts]: Start accepts. Automaton has 6506 states and 10909 transitions. Word has length 233 [2020-10-14 09:41:34,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:34,688 INFO L479 AbstractCegarLoop]: Abstraction has 6506 states and 10909 transitions. [2020-10-14 09:41:34,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 6506 states and 10909 transitions. [2020-10-14 09:41:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 09:41:34,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:34,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:34,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:41:34,696 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:34,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:34,697 INFO L82 PathProgramCache]: Analyzing trace with hash -211590509, now seen corresponding path program 1 times [2020-10-14 09:41:34,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:34,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114531829] [2020-10-14 09:41:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:34,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:36,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:37,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:39,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:39,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 09:41:39,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:41:39,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 09:41:39,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:39,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:41:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:41:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 09:41:39,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:40,799 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:41:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:40,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:40,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:40,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:40,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:41:40,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:40,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:40,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114531829] [2020-10-14 09:41:40,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:40,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:41:40,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10061946] [2020-10-14 09:41:40,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:41:40,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:40,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:41:40,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:41:40,929 INFO L87 Difference]: Start difference. First operand 6506 states and 10909 transitions. Second operand 5 states. [2020-10-14 09:41:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:47,377 INFO L93 Difference]: Finished difference Result 19217 states and 32213 transitions. [2020-10-14 09:41:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:41:47,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-14 09:41:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:47,472 INFO L225 Difference]: With dead ends: 19217 [2020-10-14 09:41:47,472 INFO L226 Difference]: Without dead ends: 12782 [2020-10-14 09:41:47,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:41:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12782 states. [2020-10-14 09:41:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12782 to 12780. [2020-10-14 09:41:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12780 states. [2020-10-14 09:41:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12780 states to 12780 states and 21371 transitions. [2020-10-14 09:41:48,035 INFO L78 Accepts]: Start accepts. Automaton has 12780 states and 21371 transitions. Word has length 237 [2020-10-14 09:41:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:48,036 INFO L479 AbstractCegarLoop]: Abstraction has 12780 states and 21371 transitions. [2020-10-14 09:41:48,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:41:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12780 states and 21371 transitions. [2020-10-14 09:41:48,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 09:41:48,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:48,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:48,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:41:48,052 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash 694908309, now seen corresponding path program 1 times [2020-10-14 09:41:48,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:48,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379359149] [2020-10-14 09:41:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:49,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:49,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:50,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:50,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:50,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:51,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:53,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:53,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 09:41:53,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:41:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-14 09:41:53,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:53,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-14 09:41:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:41:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:54,242 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:41:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:54,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:54,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:54,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:41:54,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:54,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:54,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379359149] [2020-10-14 09:41:54,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:54,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:54,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356870027] [2020-10-14 09:41:54,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:54,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:54,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:54,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:54,321 INFO L87 Difference]: Start difference. First operand 12780 states and 21371 transitions. Second operand 4 states. [2020-10-14 09:41:55,264 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-14 09:42:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:01,085 INFO L93 Difference]: Finished difference Result 24015 states and 40132 transitions. [2020-10-14 09:42:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:42:01,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-10-14 09:42:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:01,127 INFO L225 Difference]: With dead ends: 24015 [2020-10-14 09:42:01,128 INFO L226 Difference]: Without dead ends: 17957 [2020-10-14 09:42:01,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:42:01,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17957 states. [2020-10-14 09:42:01,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17957 to 17955. [2020-10-14 09:42:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17955 states. [2020-10-14 09:42:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17955 states to 17955 states and 29954 transitions. [2020-10-14 09:42:01,742 INFO L78 Accepts]: Start accepts. Automaton has 17955 states and 29954 transitions. Word has length 238 [2020-10-14 09:42:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:01,743 INFO L479 AbstractCegarLoop]: Abstraction has 17955 states and 29954 transitions. [2020-10-14 09:42:01,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 17955 states and 29954 transitions. [2020-10-14 09:42:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 09:42:01,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:01,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:01,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:42:01,753 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:01,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:01,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1440068704, now seen corresponding path program 1 times [2020-10-14 09:42:01,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:01,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627568855] [2020-10-14 09:42:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:02,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:02,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:03,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:06,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:06,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 09:42:06,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:42:06,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 09:42:06,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:06,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:06,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:06,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-14 09:42:06,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:42:06,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:07,785 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:42:07,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:07,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:07,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:07,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:07,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:42:07,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:07,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:07,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:42:07,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627568855] [2020-10-14 09:42:07,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:07,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:07,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759363647] [2020-10-14 09:42:07,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:07,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:07,852 INFO L87 Difference]: Start difference. First operand 17955 states and 29954 transitions. Second operand 4 states. [2020-10-14 09:42:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:13,468 INFO L93 Difference]: Finished difference Result 40119 states and 66964 transitions. [2020-10-14 09:42:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:42:13,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-10-14 09:42:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:13,512 INFO L225 Difference]: With dead ends: 40119 [2020-10-14 09:42:13,512 INFO L226 Difference]: Without dead ends: 23469 [2020-10-14 09:42:13,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:13,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23469 states. [2020-10-14 09:42:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23469 to 23179. [2020-10-14 09:42:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23179 states. [2020-10-14 09:42:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23179 states to 23179 states and 38490 transitions. [2020-10-14 09:42:14,275 INFO L78 Accepts]: Start accepts. Automaton has 23179 states and 38490 transitions. Word has length 238 [2020-10-14 09:42:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:14,276 INFO L479 AbstractCegarLoop]: Abstraction has 23179 states and 38490 transitions. [2020-10-14 09:42:14,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 23179 states and 38490 transitions. [2020-10-14 09:42:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 09:42:14,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:14,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:14,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:42:14,286 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:14,287 INFO L82 PathProgramCache]: Analyzing trace with hash -182676414, now seen corresponding path program 1 times [2020-10-14 09:42:14,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:14,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671519413] [2020-10-14 09:42:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:15,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:16,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:16,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:16,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:19,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:19,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 09:42:19,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:42:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:42:19,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:19,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 09:42:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 09:42:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:20,336 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:42:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:20,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:20,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:20,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:42:20,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:20,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:20,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:42:20,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671519413] [2020-10-14 09:42:20,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:20,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:20,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417679778] [2020-10-14 09:42:20,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:20,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:20,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:20,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:20,448 INFO L87 Difference]: Start difference. First operand 23179 states and 38490 transitions. Second operand 4 states. [2020-10-14 09:42:30,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:30,912 INFO L93 Difference]: Finished difference Result 68549 states and 113809 transitions. [2020-10-14 09:42:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:42:30,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-10-14 09:42:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:30,973 INFO L225 Difference]: With dead ends: 68549 [2020-10-14 09:42:30,973 INFO L226 Difference]: Without dead ends: 45526 [2020-10-14 09:42:31,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45526 states. [2020-10-14 09:42:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45526 to 45524. [2020-10-14 09:42:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45524 states. [2020-10-14 09:42:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45524 states to 45524 states and 75386 transitions. [2020-10-14 09:42:32,192 INFO L78 Accepts]: Start accepts. Automaton has 45524 states and 75386 transitions. Word has length 239 [2020-10-14 09:42:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:32,192 INFO L479 AbstractCegarLoop]: Abstraction has 45524 states and 75386 transitions. [2020-10-14 09:42:32,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 45524 states and 75386 transitions. [2020-10-14 09:42:32,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:42:32,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:32,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:32,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:42:32,204 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:32,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:32,205 INFO L82 PathProgramCache]: Analyzing trace with hash -271335086, now seen corresponding path program 1 times [2020-10-14 09:42:32,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:32,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448768830] [2020-10-14 09:42:32,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:33,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:37,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:37,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:42:37,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:42:37,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:42:37,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:37,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:42:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:42:37,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:38,168 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:42:38,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:38,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:38,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:38,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:38,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:42:38,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:38,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:42:38,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448768830] [2020-10-14 09:42:38,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:38,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:38,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562473551] [2020-10-14 09:42:38,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:38,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:38,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:38,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:38,235 INFO L87 Difference]: Start difference. First operand 45524 states and 75386 transitions. Second operand 4 states. [2020-10-14 09:42:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:49,863 INFO L93 Difference]: Finished difference Result 136295 states and 225656 transitions. [2020-10-14 09:42:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:42:49,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:42:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:49,999 INFO L225 Difference]: With dead ends: 136295 [2020-10-14 09:42:49,999 INFO L226 Difference]: Without dead ends: 90913 [2020-10-14 09:42:50,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90913 states. [2020-10-14 09:42:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90913 to 45571. [2020-10-14 09:42:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45571 states. [2020-10-14 09:42:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45571 states to 45571 states and 75460 transitions. [2020-10-14 09:42:51,978 INFO L78 Accepts]: Start accepts. Automaton has 45571 states and 75460 transitions. Word has length 240 [2020-10-14 09:42:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:51,978 INFO L479 AbstractCegarLoop]: Abstraction has 45571 states and 75460 transitions. [2020-10-14 09:42:51,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 45571 states and 75460 transitions. [2020-10-14 09:42:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:42:51,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:51,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:51,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:42:51,990 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:51,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:51,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2137652443, now seen corresponding path program 1 times [2020-10-14 09:42:51,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:51,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293607511] [2020-10-14 09:42:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:53,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:53,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:53,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:57,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:57,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:42:57,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:42:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:42:57,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:57,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-14 09:42:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:42:57,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:58,007 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:42:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:58,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:58,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:58,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:58,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:42:58,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:58,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:42:58,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293607511] [2020-10-14 09:42:58,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:58,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:58,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841310777] [2020-10-14 09:42:58,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:58,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:58,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:58,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:58,076 INFO L87 Difference]: Start difference. First operand 45571 states and 75460 transitions. Second operand 4 states. [2020-10-14 09:43:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:43:05,862 INFO L93 Difference]: Finished difference Result 108871 states and 180534 transitions. [2020-10-14 09:43:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:43:05,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:43:05,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:43:05,942 INFO L225 Difference]: With dead ends: 108871 [2020-10-14 09:43:05,942 INFO L226 Difference]: Without dead ends: 65685 [2020-10-14 09:43:05,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:43:06,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65685 states. [2020-10-14 09:43:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65685 to 64531. [2020-10-14 09:43:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64531 states. [2020-10-14 09:43:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64531 states to 64531 states and 106072 transitions. [2020-10-14 09:43:08,079 INFO L78 Accepts]: Start accepts. Automaton has 64531 states and 106072 transitions. Word has length 240 [2020-10-14 09:43:08,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:43:08,080 INFO L479 AbstractCegarLoop]: Abstraction has 64531 states and 106072 transitions. [2020-10-14 09:43:08,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:43:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 64531 states and 106072 transitions. [2020-10-14 09:43:08,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:43:08,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:43:08,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:43:08,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:43:08,088 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:43:08,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:43:08,088 INFO L82 PathProgramCache]: Analyzing trace with hash 435524292, now seen corresponding path program 1 times [2020-10-14 09:43:08,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:43:08,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798774971] [2020-10-14 09:43:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:43:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:43:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:09,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:09,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:09,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:09,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:10,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:13,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:43:13,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:43:13,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:43:13,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 09:43:13,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:43:13,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:43:13,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:43:13,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 09:43:13,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:43:13,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:43:14,163 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:43:14,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:43:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:43:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:14,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:43:14,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:43:14,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:43:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:43:14,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:43:14,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:43:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:43:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:43:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:43:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:43:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:43:14,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798774971] [2020-10-14 09:43:14,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:43:14,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:43:14,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331814736] [2020-10-14 09:43:14,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:43:14,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:43:14,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:43:14,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:43:14,236 INFO L87 Difference]: Start difference. First operand 64531 states and 106072 transitions. Second operand 4 states. [2020-10-14 09:43:15,386 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 386 [2020-10-14 09:43:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:43:24,063 INFO L93 Difference]: Finished difference Result 123527 states and 203498 transitions. [2020-10-14 09:43:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:43:24,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:43:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:43:24,180 INFO L225 Difference]: With dead ends: 123527 [2020-10-14 09:43:24,180 INFO L226 Difference]: Without dead ends: 82165 [2020-10-14 09:43:24,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:43:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-10-14 09:43:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 82163. [2020-10-14 09:43:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82163 states. [2020-10-14 09:43:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82163 states to 82163 states and 135040 transitions. [2020-10-14 09:43:27,028 INFO L78 Accepts]: Start accepts. Automaton has 82163 states and 135040 transitions. Word has length 240 [2020-10-14 09:43:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:43:27,029 INFO L479 AbstractCegarLoop]: Abstraction has 82163 states and 135040 transitions. [2020-10-14 09:43:27,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:43:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 82163 states and 135040 transitions. [2020-10-14 09:43:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 09:43:27,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:43:27,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:43:27,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:43:27,036 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:43:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:43:27,036 INFO L82 PathProgramCache]: Analyzing trace with hash 281448016, now seen corresponding path program 1 times [2020-10-14 09:43:27,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:43:27,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300858463] [2020-10-14 09:43:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:43:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:43:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:27,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:28,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:29,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:29,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:32,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:43:32,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 09:43:32,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:43:32,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:43:32,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:43:32,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:43:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:43:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:43:32,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 09:43:32,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:43:33,373 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:43:33,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:43:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:43:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:33,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:43:33,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:43:33,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:43:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:43:33,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:43:33,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:43:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:43:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:43:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:43:33,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300858463] [2020-10-14 09:43:33,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:43:33,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:43:33,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750323823] [2020-10-14 09:43:33,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:43:33,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:43:33,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:43:33,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:43:33,545 INFO L87 Difference]: Start difference. First operand 82163 states and 135040 transitions. Second operand 5 states. [2020-10-14 09:43:47,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:43:47,885 INFO L93 Difference]: Finished difference Result 244514 states and 402026 transitions. [2020-10-14 09:43:47,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:43:47,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-14 09:43:47,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:43:48,145 INFO L225 Difference]: With dead ends: 244514 [2020-10-14 09:43:48,146 INFO L226 Difference]: Without dead ends: 162580 [2020-10-14 09:43:48,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:43:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162580 states. [2020-10-14 09:43:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162580 to 162578. [2020-10-14 09:43:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162578 states. [2020-10-14 09:43:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162578 states to 162578 states and 266708 transitions. [2020-10-14 09:43:57,219 INFO L78 Accepts]: Start accepts. Automaton has 162578 states and 266708 transitions. Word has length 241 [2020-10-14 09:43:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:43:57,220 INFO L479 AbstractCegarLoop]: Abstraction has 162578 states and 266708 transitions. [2020-10-14 09:43:57,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:43:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 162578 states and 266708 transitions. [2020-10-14 09:43:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 09:43:57,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:43:57,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:43:57,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:43:57,231 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:43:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:43:57,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1557464071, now seen corresponding path program 1 times [2020-10-14 09:43:57,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:43:57,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712320405] [2020-10-14 09:43:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:43:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:43:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:58,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:58,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:58,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:44:02,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:44:02,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 09:44:02,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:44:02,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:44:02,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:44:02,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:44:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:44:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:44:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 09:44:02,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0