/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:13:05,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:13:05,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:13:05,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:13:05,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:13:05,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:13:05,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:13:05,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:13:05,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:13:05,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:13:05,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:13:05,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:13:05,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:13:05,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:13:05,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:13:05,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:13:05,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:13:05,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:13:05,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:13:05,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:13:05,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:13:05,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:13:05,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:13:05,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:13:05,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:13:05,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:13:05,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:13:05,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:13:05,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:13:05,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:13:05,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:13:05,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:13:05,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:13:05,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:13:05,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:13:05,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:13:05,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:13:05,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:13:05,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:13:05,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:13:05,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:13:05,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:13:05,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:13:05,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:13:05,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:13:05,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:13:05,914 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:13:05,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:13:05,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:13:05,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:13:05,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:13:05,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:13:05,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:13:05,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:13:05,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:13:05,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:13:05,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:13:05,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:13:05,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:13:05,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:13:05,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:13:05,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:13:05,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:13:05,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:13:05,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:13:05,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:13:05,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:13:05,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:13:05,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:13:05,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:13:05,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:13:05,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:13:06,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:13:06,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:13:06,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:13:06,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:13:06,289 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:13:06,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:13:06,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94de90e63/20f43cb4ec4246f884ee530c159920ac/FLAGf6045e5ce [2020-10-15 04:13:06,848 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:13:06,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:13:06,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94de90e63/20f43cb4ec4246f884ee530c159920ac/FLAGf6045e5ce [2020-10-15 04:13:07,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94de90e63/20f43cb4ec4246f884ee530c159920ac [2020-10-15 04:13:07,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:13:07,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:13:07,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:13:07,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:13:07,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:13:07,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:13:07" (1/1) ... [2020-10-15 04:13:07,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c853998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:07, skipping insertion in model container [2020-10-15 04:13:07,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:13:07" (1/1) ... [2020-10-15 04:13:07,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:13:07,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:13:07,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:13:07,818 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:13:07,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:13:08,027 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:13:08,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08 WrapperNode [2020-10-15 04:13:08,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:13:08,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:13:08,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:13:08,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:13:08,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08" (1/1) ... [2020-10-15 04:13:08,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08" (1/1) ... [2020-10-15 04:13:08,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08" (1/1) ... [2020-10-15 04:13:08,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08" (1/1) ... [2020-10-15 04:13:08,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08" (1/1) ... [2020-10-15 04:13:08,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08" (1/1) ... [2020-10-15 04:13:08,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08" (1/1) ... [2020-10-15 04:13:08,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:13:08,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:13:08,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:13:08,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:13:08,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:13:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:13:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:13:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:13:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:13:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:13:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:13:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:13:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:13:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:13:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:13:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:13:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:13:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:13:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:13:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:13:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:13:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:13:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:13:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:13:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:13:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:13:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:13:09,867 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:13:09,868 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:13:09,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:13:09 BoogieIcfgContainer [2020-10-15 04:13:09,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:13:09,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:13:09,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:13:09,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:13:09,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:13:07" (1/3) ... [2020-10-15 04:13:09,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7508e9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:13:09, skipping insertion in model container [2020-10-15 04:13:09,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:08" (2/3) ... [2020-10-15 04:13:09,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7508e9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:13:09, skipping insertion in model container [2020-10-15 04:13:09,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:13:09" (3/3) ... [2020-10-15 04:13:09,885 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:13:09,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:13:09,904 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:13:09,920 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:13:09,949 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:13:09,949 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:13:09,949 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:13:09,949 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:13:09,950 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:13:09,950 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:13:09,950 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:13:09,950 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:13:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states. [2020-10-15 04:13:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 04:13:09,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:09,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:09,996 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:10,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:10,003 INFO L82 PathProgramCache]: Analyzing trace with hash -273306171, now seen corresponding path program 1 times [2020-10-15 04:13:10,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:10,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479613301] [2020-10-15 04:13:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:10,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:11,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:15,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:15,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 04:13:15,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:13:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 04:13:15,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:15,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:15,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:13:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 04:13:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 04:13:15,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-15 04:13:16,213 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:13:16,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:16,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:16,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:16,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 04:13:16,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:16,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:16,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479613301] [2020-10-15 04:13:16,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:16,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:13:16,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384149349] [2020-10-15 04:13:16,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:13:16,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:16,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:13:16,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:13:16,337 INFO L87 Difference]: Start difference. First operand 356 states. Second operand 4 states. [2020-10-15 04:13:16,917 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:13:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:19,201 INFO L93 Difference]: Finished difference Result 664 states and 1141 transitions. [2020-10-15 04:13:19,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:19,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-15 04:13:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:19,222 INFO L225 Difference]: With dead ends: 664 [2020-10-15 04:13:19,223 INFO L226 Difference]: Without dead ends: 497 [2020-10-15 04:13:19,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-15 04:13:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 494. [2020-10-15 04:13:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-10-15 04:13:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 816 transitions. [2020-10-15 04:13:19,328 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 816 transitions. Word has length 122 [2020-10-15 04:13:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:19,329 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 816 transitions. [2020-10-15 04:13:19,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:13:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 816 transitions. [2020-10-15 04:13:19,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 04:13:19,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:19,341 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] [2020-10-15 04:13:19,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:13:19,343 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:19,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2079566663, now seen corresponding path program 1 times [2020-10-15 04:13:19,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:19,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079128008] [2020-10-15 04:13:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:19,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:24,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 04:13:24,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:13:24,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-15 04:13:24,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:24,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 04:13:24,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:24,995 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:13:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:25,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:25,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:13:25,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:25,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:25,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079128008] [2020-10-15 04:13:25,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:25,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:25,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318221088] [2020-10-15 04:13:25,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:25,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:25,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:25,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:25,089 INFO L87 Difference]: Start difference. First operand 494 states and 816 transitions. Second operand 5 states. [2020-10-15 04:13:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:27,477 INFO L93 Difference]: Finished difference Result 1388 states and 2285 transitions. [2020-10-15 04:13:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:27,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 04:13:27,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:27,488 INFO L225 Difference]: With dead ends: 1388 [2020-10-15 04:13:27,489 INFO L226 Difference]: Without dead ends: 941 [2020-10-15 04:13:27,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:27,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2020-10-15 04:13:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 939. [2020-10-15 04:13:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2020-10-15 04:13:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1540 transitions. [2020-10-15 04:13:27,564 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1540 transitions. Word has length 125 [2020-10-15 04:13:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:27,565 INFO L479 AbstractCegarLoop]: Abstraction has 939 states and 1540 transitions. [2020-10-15 04:13:27,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1540 transitions. [2020-10-15 04:13:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 04:13:27,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:27,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:27,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:13:27,569 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash 305882324, now seen corresponding path program 1 times [2020-10-15 04:13:27,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:27,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74266898] [2020-10-15 04:13:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:27,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:28,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:28,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:29,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:32,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:32,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-15 04:13:32,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:32,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:32,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 04:13:32,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:33,418 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:13:33,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:33,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:33,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:13:33,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:33,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:33,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:13:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:33,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74266898] [2020-10-15 04:13:33,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:33,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:33,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932999194] [2020-10-15 04:13:33,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:33,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:33,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:33,583 INFO L87 Difference]: Start difference. First operand 939 states and 1540 transitions. Second operand 5 states. [2020-10-15 04:13:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:36,589 INFO L93 Difference]: Finished difference Result 2702 states and 4422 transitions. [2020-10-15 04:13:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:36,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 04:13:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:36,606 INFO L225 Difference]: With dead ends: 2702 [2020-10-15 04:13:36,606 INFO L226 Difference]: Without dead ends: 1840 [2020-10-15 04:13:36,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2020-10-15 04:13:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1838. [2020-10-15 04:13:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-10-15 04:13:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 3003 transitions. [2020-10-15 04:13:36,789 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 3003 transitions. Word has length 126 [2020-10-15 04:13:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:36,791 INFO L479 AbstractCegarLoop]: Abstraction has 1838 states and 3003 transitions. [2020-10-15 04:13:36,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 3003 transitions. [2020-10-15 04:13:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 04:13:36,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:36,801 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] [2020-10-15 04:13:36,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:13:36,802 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:36,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1356759864, now seen corresponding path program 1 times [2020-10-15 04:13:36,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:36,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955313116] [2020-10-15 04:13:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:41,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:41,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 04:13:41,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:13:41,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:13:41,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:41,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-15 04:13:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:42,428 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:13:42,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:42,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:42,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:42,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:42,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:13:42,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:42,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:42,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955313116] [2020-10-15 04:13:42,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:42,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:42,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927047675] [2020-10-15 04:13:42,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:42,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:42,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:42,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:42,525 INFO L87 Difference]: Start difference. First operand 1838 states and 3003 transitions. Second operand 5 states. [2020-10-15 04:13:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:45,342 INFO L93 Difference]: Finished difference Result 5366 states and 8753 transitions. [2020-10-15 04:13:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:45,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-15 04:13:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:45,365 INFO L225 Difference]: With dead ends: 5366 [2020-10-15 04:13:45,365 INFO L226 Difference]: Without dead ends: 3599 [2020-10-15 04:13:45,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2020-10-15 04:13:45,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3597. [2020-10-15 04:13:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3597 states. [2020-10-15 04:13:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5847 transitions. [2020-10-15 04:13:45,613 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5847 transitions. Word has length 127 [2020-10-15 04:13:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:45,614 INFO L479 AbstractCegarLoop]: Abstraction has 3597 states and 5847 transitions. [2020-10-15 04:13:45,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:45,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5847 transitions. [2020-10-15 04:13:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 04:13:45,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:45,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:45,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:13:45,622 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:45,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2109885953, now seen corresponding path program 1 times [2020-10-15 04:13:45,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:45,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280919284] [2020-10-15 04:13:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:45,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:46,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:50,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:50,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 04:13:50,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:13:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4754 [2020-10-15 04:13:50,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:50,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:13:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:13:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:13:50,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:50,945 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:13:50,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:50,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:50,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:50,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 04:13:50,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:50,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:50,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:50,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:50,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:51,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280919284] [2020-10-15 04:13:51,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:51,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:13:51,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610976206] [2020-10-15 04:13:51,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:13:51,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:51,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:13:51,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:13:51,053 INFO L87 Difference]: Start difference. First operand 3597 states and 5847 transitions. Second operand 4 states. [2020-10-15 04:13:51,543 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:13:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:53,571 INFO L93 Difference]: Finished difference Result 7849 states and 12913 transitions. [2020-10-15 04:13:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:53,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-15 04:13:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:53,599 INFO L225 Difference]: With dead ends: 7849 [2020-10-15 04:13:53,599 INFO L226 Difference]: Without dead ends: 5631 [2020-10-15 04:13:53,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2020-10-15 04:13:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5613. [2020-10-15 04:13:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5613 states. [2020-10-15 04:13:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5613 states to 5613 states and 9103 transitions. [2020-10-15 04:13:53,982 INFO L78 Accepts]: Start accepts. Automaton has 5613 states and 9103 transitions. Word has length 128 [2020-10-15 04:13:53,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:53,983 INFO L479 AbstractCegarLoop]: Abstraction has 5613 states and 9103 transitions. [2020-10-15 04:13:53,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:13:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5613 states and 9103 transitions. [2020-10-15 04:13:53,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 04:13:53,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:53,993 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] [2020-10-15 04:13:53,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:13:53,994 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:53,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:53,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1714321646, now seen corresponding path program 1 times [2020-10-15 04:13:53,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:53,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265038431] [2020-10-15 04:13:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:54,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:55,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:59,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:59,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-15 04:13:59,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:13:59,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:13:59,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:59,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 04:13:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:13:59,645 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:13:59,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:59,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:59,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:59,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:59,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 04:13:59,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:59,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:59,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:59,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265038431] [2020-10-15 04:13:59,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:59,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:59,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891337412] [2020-10-15 04:13:59,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:59,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:59,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:59,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:59,965 INFO L87 Difference]: Start difference. First operand 5613 states and 9103 transitions. Second operand 5 states. [2020-10-15 04:14:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:02,568 INFO L93 Difference]: Finished difference Result 16592 states and 26896 transitions. [2020-10-15 04:14:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:02,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-15 04:14:02,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:02,617 INFO L225 Difference]: With dead ends: 16592 [2020-10-15 04:14:02,617 INFO L226 Difference]: Without dead ends: 11008 [2020-10-15 04:14:02,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:14:02,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11008 states. [2020-10-15 04:14:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11008 to 11006. [2020-10-15 04:14:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11006 states. [2020-10-15 04:14:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11006 states to 11006 states and 17743 transitions. [2020-10-15 04:14:03,426 INFO L78 Accepts]: Start accepts. Automaton has 11006 states and 17743 transitions. Word has length 131 [2020-10-15 04:14:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:03,427 INFO L479 AbstractCegarLoop]: Abstraction has 11006 states and 17743 transitions. [2020-10-15 04:14:03,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:14:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 11006 states and 17743 transitions. [2020-10-15 04:14:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 04:14:03,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:03,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:14:03,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:14:03,446 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash 287474448, now seen corresponding path program 1 times [2020-10-15 04:14:03,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:03,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452085499] [2020-10-15 04:14:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:03,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:05,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:08,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:08,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 04:14:08,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:14:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:14:08,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:08,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 04:14:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:09,007 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:14:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:09,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:09,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:09,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:09,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:14:09,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:09,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:14:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:09,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452085499] [2020-10-15 04:14:09,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:09,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:09,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559101895] [2020-10-15 04:14:09,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:09,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:09,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:09,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:09,089 INFO L87 Difference]: Start difference. First operand 11006 states and 17743 transitions. Second operand 5 states. [2020-10-15 04:14:12,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:12,285 INFO L93 Difference]: Finished difference Result 32416 states and 52207 transitions. [2020-10-15 04:14:12,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:12,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-15 04:14:12,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:12,339 INFO L225 Difference]: With dead ends: 32416 [2020-10-15 04:14:12,339 INFO L226 Difference]: Without dead ends: 21596 [2020-10-15 04:14:12,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:14:12,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21596 states. [2020-10-15 04:14:13,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21596 to 21594. [2020-10-15 04:14:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21594 states. [2020-10-15 04:14:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21594 states to 21594 states and 34605 transitions. [2020-10-15 04:14:13,611 INFO L78 Accepts]: Start accepts. Automaton has 21594 states and 34605 transitions. Word has length 132 [2020-10-15 04:14:13,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:13,612 INFO L479 AbstractCegarLoop]: Abstraction has 21594 states and 34605 transitions. [2020-10-15 04:14:13,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:14:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 21594 states and 34605 transitions. [2020-10-15 04:14:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 04:14:13,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:13,649 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] [2020-10-15 04:14:13,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:14:13,649 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:13,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1575104397, now seen corresponding path program 1 times [2020-10-15 04:14:13,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:13,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954537334] [2020-10-15 04:14:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:14,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:15,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:18,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:18,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 04:14:18,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:14:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-15 04:14:18,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:18,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 04:14:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:19,239 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:14:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:19,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:19,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:19,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:14:19,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:19,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:19,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954537334] [2020-10-15 04:14:19,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:19,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:19,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177694196] [2020-10-15 04:14:19,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:19,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:19,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:19,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:19,303 INFO L87 Difference]: Start difference. First operand 21594 states and 34605 transitions. Second operand 5 states. [2020-10-15 04:14:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:23,935 INFO L93 Difference]: Finished difference Result 62934 states and 100695 transitions. [2020-10-15 04:14:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:23,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-15 04:14:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:24,056 INFO L225 Difference]: With dead ends: 62934 [2020-10-15 04:14:24,056 INFO L226 Difference]: Without dead ends: 41884 [2020-10-15 04:14:24,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:14:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41884 states. [2020-10-15 04:14:27,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41884 to 41882. [2020-10-15 04:14:27,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41882 states. [2020-10-15 04:14:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41882 states to 41882 states and 66709 transitions. [2020-10-15 04:14:27,911 INFO L78 Accepts]: Start accepts. Automaton has 41882 states and 66709 transitions. Word has length 133 [2020-10-15 04:14:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:27,911 INFO L479 AbstractCegarLoop]: Abstraction has 41882 states and 66709 transitions. [2020-10-15 04:14:27,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:14:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 41882 states and 66709 transitions. [2020-10-15 04:14:27,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-15 04:14:27,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:27,957 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] [2020-10-15 04:14:27,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:14:27,958 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:27,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1374836515, now seen corresponding path program 1 times [2020-10-15 04:14:27,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:27,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942882259] [2020-10-15 04:14:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:29,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:29,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:32,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:32,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 04:14:32,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:14:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4862 [2020-10-15 04:14:32,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:32,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:14:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-15 04:14:32,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 04:14:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:33,251 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:14:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:33,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:33,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:33,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:33,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:14:33,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:33,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:33,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:14:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:33,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942882259] [2020-10-15 04:14:33,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:33,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:14:33,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029095609] [2020-10-15 04:14:33,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:14:33,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:33,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:14:33,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:14:33,306 INFO L87 Difference]: Start difference. First operand 41882 states and 66709 transitions. Second operand 4 states. [2020-10-15 04:14:33,698 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:14:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:40,028 INFO L93 Difference]: Finished difference Result 102814 states and 165271 transitions. [2020-10-15 04:14:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:40,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-15 04:14:40,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:40,206 INFO L225 Difference]: With dead ends: 102814 [2020-10-15 04:14:40,206 INFO L226 Difference]: Without dead ends: 71196 [2020-10-15 04:14:40,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71196 states. [2020-10-15 04:14:45,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71196 to 70938. [2020-10-15 04:14:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70938 states. [2020-10-15 04:14:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70938 states to 70938 states and 113301 transitions. [2020-10-15 04:14:45,166 INFO L78 Accepts]: Start accepts. Automaton has 70938 states and 113301 transitions. Word has length 134 [2020-10-15 04:14:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:45,167 INFO L479 AbstractCegarLoop]: Abstraction has 70938 states and 113301 transitions. [2020-10-15 04:14:45,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:14:45,167 INFO L276 IsEmpty]: Start isEmpty. Operand 70938 states and 113301 transitions. [2020-10-15 04:14:45,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-15 04:14:45,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:45,206 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] [2020-10-15 04:14:45,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:14:45,206 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:45,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:45,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1440317205, now seen corresponding path program 1 times [2020-10-15 04:14:45,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:45,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345544070] [2020-10-15 04:14:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:46,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:47,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:47,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:47,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:49,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:50,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:50,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 04:14:50,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:14:50,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:14:50,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:50,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:50,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 04:14:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:50,680 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:14:50,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:50,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:50,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:50,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:50,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:14:50,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:50,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:50,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345544070] [2020-10-15 04:14:50,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:50,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:50,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534017037] [2020-10-15 04:14:50,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:50,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:50,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:50,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:50,742 INFO L87 Difference]: Start difference. First operand 70938 states and 113301 transitions. Second operand 5 states. [2020-10-15 04:15:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:02,846 INFO L93 Difference]: Finished difference Result 207304 states and 330647 transitions. [2020-10-15 04:15:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:15:02,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-15 04:15:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:03,133 INFO L225 Difference]: With dead ends: 207304 [2020-10-15 04:15:03,133 INFO L226 Difference]: Without dead ends: 138134 [2020-10-15 04:15:03,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:15:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138134 states. [2020-10-15 04:15:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138134 to 138132. [2020-10-15 04:15:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138132 states. [2020-10-15 04:15:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138132 states to 138132 states and 219445 transitions. [2020-10-15 04:15:17,004 INFO L78 Accepts]: Start accepts. Automaton has 138132 states and 219445 transitions. Word has length 137 [2020-10-15 04:15:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:15:17,005 INFO L479 AbstractCegarLoop]: Abstraction has 138132 states and 219445 transitions. [2020-10-15 04:15:17,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:15:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 138132 states and 219445 transitions. [2020-10-15 04:15:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-15 04:15:17,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:17,080 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] [2020-10-15 04:15:17,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:15:17,080 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:17,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash -759441734, now seen corresponding path program 1 times [2020-10-15 04:15:17,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:17,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046573159] [2020-10-15 04:15:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:17,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:17,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:20,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:22,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:22,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-15 04:15:22,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:15:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 04:15:22,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:22,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:15:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:15:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 04:15:22,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:15:22,594 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:15:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:15:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:22,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:22,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:22,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:15:22,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:15:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:15:22,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:22,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:15:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:15:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:15:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:15:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:15:22,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046573159] [2020-10-15 04:15:22,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:15:22,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:15:22,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655976380] [2020-10-15 04:15:22,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:15:22,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:15:22,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:15:22,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:15:22,652 INFO L87 Difference]: Start difference. First operand 138132 states and 219445 transitions. Second operand 5 states. [2020-10-15 04:15:49,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:49,489 INFO L93 Difference]: Finished difference Result 406835 states and 645813 transitions. [2020-10-15 04:15:49,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:15:49,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-15 04:15:49,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:50,002 INFO L225 Difference]: With dead ends: 406835 [2020-10-15 04:15:50,003 INFO L226 Difference]: Without dead ends: 270053 [2020-10-15 04:15:50,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:15:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270053 states. [2020-10-15 04:16:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270053 to 270051. [2020-10-15 04:16:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270051 states. [2020-10-15 04:16:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270051 states to 270051 states and 426815 transitions. [2020-10-15 04:16:15,793 INFO L78 Accepts]: Start accepts. Automaton has 270051 states and 426815 transitions. Word has length 138 [2020-10-15 04:16:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:15,793 INFO L479 AbstractCegarLoop]: Abstraction has 270051 states and 426815 transitions. [2020-10-15 04:16:15,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:16:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 270051 states and 426815 transitions. [2020-10-15 04:16:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 04:16:15,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:15,924 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] [2020-10-15 04:16:15,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:16:15,924 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:15,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2004356327, now seen corresponding path program 1 times [2020-10-15 04:16:15,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:15,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003569280] [2020-10-15 04:16:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:16,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:16,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:17,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:18,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:18,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:23,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:23,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 04:16:23,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:16:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7790 [2020-10-15 04:16:23,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:23,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:16:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:16:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 04:16:23,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:16:24,191 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:16:24,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:16:24,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:24,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:24,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:16:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:24,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003569280] [2020-10-15 04:16:24,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:24,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:16:24,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686701660] [2020-10-15 04:16:24,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:16:24,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:24,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:16:24,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:16:24,271 INFO L87 Difference]: Start difference. First operand 270051 states and 426815 transitions. Second operand 5 states.