/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_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:54:44,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:54:44,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:54:44,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:54:44,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:54:44,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:54:44,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:54:44,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:54:44,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:54:44,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:54:44,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:54:44,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:54:44,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:54:44,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:54:44,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:54:44,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:54:44,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:54:44,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:54:44,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:54:44,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:54:44,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:54:44,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:54:44,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:54:44,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:54:44,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:54:44,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:54:44,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:54:44,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:54:44,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:54:44,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:54:44,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:54:44,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:54:44,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:54:44,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:54:44,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:54:44,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:54:44,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:54:44,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:54:44,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:54:44,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:54:44,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:54:44,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:54:44,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:54:44,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:54:44,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:54:44,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:54:44,885 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:54:44,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:54:44,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:54:44,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:54:44,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:54:44,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:54:44,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:54:44,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:54:44,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:54:44,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:54:44,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:54:44,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:54:44,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:54:44,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:54:44,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:54:44,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:54:44,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:54:44,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:54:44,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:54:44,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:54:44,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:54:44,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:54:44,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:54:44,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:54:44,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:54:44,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:54:45,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:54:45,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:54:45,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:54:45,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:54:45,233 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:54:45,234 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-15 03:54:45,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b817ed536/f398464d3d064eccb0a6b98b532706c1/FLAG2932c5daa [2020-10-15 03:54:45,864 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:54:45,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-15 03:54:45,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b817ed536/f398464d3d064eccb0a6b98b532706c1/FLAG2932c5daa [2020-10-15 03:54:46,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b817ed536/f398464d3d064eccb0a6b98b532706c1 [2020-10-15 03:54:46,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:54:46,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:54:46,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:54:46,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:54:46,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:54:46,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:54:46" (1/1) ... [2020-10-15 03:54:46,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e58bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46, skipping insertion in model container [2020-10-15 03:54:46,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:54:46" (1/1) ... [2020-10-15 03:54:46,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:54:46,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:54:46,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:54:46,792 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:54:46,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:54:46,947 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:54:46,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46 WrapperNode [2020-10-15 03:54:46,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:54:46,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:54:46,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:54:46,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:54:46,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46" (1/1) ... [2020-10-15 03:54:46,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46" (1/1) ... [2020-10-15 03:54:46,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46" (1/1) ... [2020-10-15 03:54:46,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46" (1/1) ... [2020-10-15 03:54:47,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46" (1/1) ... [2020-10-15 03:54:47,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46" (1/1) ... [2020-10-15 03:54:47,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46" (1/1) ... [2020-10-15 03:54:47,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:54:47,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:54:47,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:54:47,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:54:47,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:54:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:54:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:54:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:54:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:54:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:54:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:54:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:54:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:54:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:54:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:54:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:54:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:54:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:54:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:54:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:54:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:54:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:54:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:54:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:54:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:54:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:54:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:54:48,346 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:54:48,347 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:54:48,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:54:48 BoogieIcfgContainer [2020-10-15 03:54:48,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:54:48,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:54:48,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:54:48,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:54:48,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:54:46" (1/3) ... [2020-10-15 03:54:48,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71173a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:54:48, skipping insertion in model container [2020-10-15 03:54:48,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:46" (2/3) ... [2020-10-15 03:54:48,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71173a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:54:48, skipping insertion in model container [2020-10-15 03:54:48,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:54:48" (3/3) ... [2020-10-15 03:54:48,362 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-15 03:54:48,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:54:48,381 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:54:48,395 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:54:48,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:54:48,431 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:54:48,432 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:54:48,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:54:48,432 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:54:48,432 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:54:48,433 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:54:48,433 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:54:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-15 03:54:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:54:48,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:48,486 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] [2020-10-15 03:54:48,486 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:48,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:48,491 INFO L82 PathProgramCache]: Analyzing trace with hash -875220176, now seen corresponding path program 1 times [2020-10-15 03:54:48,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:48,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041921863] [2020-10-15 03:54:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:49,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:49,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:49,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:53,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:53,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:54:53,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:54:53,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:54:53,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:53,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:53,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:54:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:54:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 03:54:53,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:54:54,133 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:54:54,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 03:54:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:54,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:54:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:54:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:54:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:54:54,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041921863] [2020-10-15 03:54:54,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:54,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:54:54,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153141082] [2020-10-15 03:54:54,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:54:54,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:54,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:54:54,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:54:54,288 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 4 states. [2020-10-15 03:54:54,573 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-15 03:54:56,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:56,576 INFO L93 Difference]: Finished difference Result 752 states and 1212 transitions. [2020-10-15 03:54:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:54:56,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-15 03:54:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:56,599 INFO L225 Difference]: With dead ends: 752 [2020-10-15 03:54:56,599 INFO L226 Difference]: Without dead ends: 576 [2020-10-15 03:54:56,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:54:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-15 03:54:56,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 552. [2020-10-15 03:54:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-10-15 03:54:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 889 transitions. [2020-10-15 03:54:56,699 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 889 transitions. Word has length 83 [2020-10-15 03:54:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:54:56,700 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 889 transitions. [2020-10-15 03:54:56,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:54:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 889 transitions. [2020-10-15 03:54:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:54:56,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:56,707 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] [2020-10-15 03:54:56,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:54:56,707 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:56,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:56,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1569683775, now seen corresponding path program 1 times [2020-10-15 03:54:56,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:56,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701418214] [2020-10-15 03:54:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:57,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:00,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:01,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:01,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:55:01,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:55:01,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:55:01,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:01,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:55:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 03:55:01,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 03:55:01,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:01,986 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:02,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:02,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:02,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:02,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:55:02,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:02,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:02,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701418214] [2020-10-15 03:55:02,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:02,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:55:02,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397656828] [2020-10-15 03:55:02,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:55:02,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:02,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:55:02,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:55:02,042 INFO L87 Difference]: Start difference. First operand 552 states and 889 transitions. Second operand 4 states. [2020-10-15 03:55:02,249 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-15 03:55:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:04,593 INFO L93 Difference]: Finished difference Result 1356 states and 2168 transitions. [2020-10-15 03:55:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:55:04,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-15 03:55:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:04,600 INFO L225 Difference]: With dead ends: 1356 [2020-10-15 03:55:04,601 INFO L226 Difference]: Without dead ends: 1026 [2020-10-15 03:55:04,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:04,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-15 03:55:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 980. [2020-10-15 03:55:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2020-10-15 03:55:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1568 transitions. [2020-10-15 03:55:04,691 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1568 transitions. Word has length 84 [2020-10-15 03:55:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:04,692 INFO L479 AbstractCegarLoop]: Abstraction has 980 states and 1568 transitions. [2020-10-15 03:55:04,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:55:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1568 transitions. [2020-10-15 03:55:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:55:04,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:04,699 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] [2020-10-15 03:55:04,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:55:04,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:04,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:04,700 INFO L82 PathProgramCache]: Analyzing trace with hash -675819507, now seen corresponding path program 1 times [2020-10-15 03:55:04,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:04,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356087539] [2020-10-15 03:55:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:04,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:08,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:08,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:09,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:09,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:55:09,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:55:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 03:55:09,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:09,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:55:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-15 03:55:09,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 03:55:09,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:10,061 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:10,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:10,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:10,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:10,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:55:10,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:10,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:10,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356087539] [2020-10-15 03:55:10,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:10,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:55:10,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604091368] [2020-10-15 03:55:10,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:55:10,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:10,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:55:10,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:55:10,106 INFO L87 Difference]: Start difference. First operand 980 states and 1568 transitions. Second operand 4 states. [2020-10-15 03:55:10,348 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-15 03:55:12,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:12,190 INFO L93 Difference]: Finished difference Result 2124 states and 3378 transitions. [2020-10-15 03:55:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:55:12,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-15 03:55:12,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:12,201 INFO L225 Difference]: With dead ends: 2124 [2020-10-15 03:55:12,201 INFO L226 Difference]: Without dead ends: 1682 [2020-10-15 03:55:12,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2020-10-15 03:55:12,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1592. [2020-10-15 03:55:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1592 states. [2020-10-15 03:55:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2528 transitions. [2020-10-15 03:55:12,283 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2528 transitions. Word has length 85 [2020-10-15 03:55:12,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:12,284 INFO L479 AbstractCegarLoop]: Abstraction has 1592 states and 2528 transitions. [2020-10-15 03:55:12,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:55:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2528 transitions. [2020-10-15 03:55:12,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:55:12,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:12,288 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] [2020-10-15 03:55:12,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:55:12,289 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:12,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:12,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2132579138, now seen corresponding path program 1 times [2020-10-15 03:55:12,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:12,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041177856] [2020-10-15 03:55:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:12,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:17,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:17,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:55:17,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:55:17,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:55:17,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:17,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:55:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 03:55:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 03:55:17,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:17,559 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:17,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:17,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:17,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:17,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:55:17,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:17,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:17,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:17,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:17,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:17,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041177856] [2020-10-15 03:55:17,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:17,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:55:17,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215741533] [2020-10-15 03:55:17,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:55:17,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:17,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:55:17,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:55:17,606 INFO L87 Difference]: Start difference. First operand 1592 states and 2528 transitions. Second operand 4 states. [2020-10-15 03:55:17,810 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-15 03:55:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:19,722 INFO L93 Difference]: Finished difference Result 3836 states and 6062 transitions. [2020-10-15 03:55:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:55:19,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-10-15 03:55:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:19,739 INFO L225 Difference]: With dead ends: 3836 [2020-10-15 03:55:19,739 INFO L226 Difference]: Without dead ends: 2938 [2020-10-15 03:55:19,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:19,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-10-15 03:55:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2760. [2020-10-15 03:55:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2760 states. [2020-10-15 03:55:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4348 transitions. [2020-10-15 03:55:19,902 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 4348 transitions. Word has length 86 [2020-10-15 03:55:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:19,902 INFO L479 AbstractCegarLoop]: Abstraction has 2760 states and 4348 transitions. [2020-10-15 03:55:19,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:55:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 4348 transitions. [2020-10-15 03:55:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:55:19,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:19,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:55:19,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:55:19,917 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2107370838, now seen corresponding path program 1 times [2020-10-15 03:55:19,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:19,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773599430] [2020-10-15 03:55:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:19,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:20,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:21,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:23,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:23,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:55:23,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:55:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4019 [2020-10-15 03:55:23,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:23,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:55:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 03:55:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:55:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:24,226 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:24,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:24,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:24,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:24,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:55:24,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:24,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:24,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773599430] [2020-10-15 03:55:24,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:24,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:55:24,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660610258] [2020-10-15 03:55:24,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:55:24,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:24,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:55:24,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:55:24,288 INFO L87 Difference]: Start difference. First operand 2760 states and 4348 transitions. Second operand 4 states. [2020-10-15 03:55:24,560 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-15 03:55:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:26,585 INFO L93 Difference]: Finished difference Result 5980 states and 9358 transitions. [2020-10-15 03:55:26,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:55:26,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-15 03:55:26,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:26,614 INFO L225 Difference]: With dead ends: 5980 [2020-10-15 03:55:26,614 INFO L226 Difference]: Without dead ends: 4762 [2020-10-15 03:55:26,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2020-10-15 03:55:26,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 4408. [2020-10-15 03:55:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4408 states. [2020-10-15 03:55:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 6860 transitions. [2020-10-15 03:55:26,887 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 6860 transitions. Word has length 87 [2020-10-15 03:55:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:26,891 INFO L479 AbstractCegarLoop]: Abstraction has 4408 states and 6860 transitions. [2020-10-15 03:55:26,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:55:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 6860 transitions. [2020-10-15 03:55:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:55:26,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:26,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:55:26,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:55:26,917 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:26,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1810475700, now seen corresponding path program 1 times [2020-10-15 03:55:26,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:26,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667991734] [2020-10-15 03:55:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:27,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:28,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:28,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:55:28,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:55:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-15 03:55:28,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:28,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:28,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:55:28,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 03:55:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:55:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:28,853 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:28,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:28,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:28,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:28,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:55:28,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:28,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:28,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667991734] [2020-10-15 03:55:28,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:28,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:55:28,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604994564] [2020-10-15 03:55:28,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:55:28,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:28,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:55:28,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:28,890 INFO L87 Difference]: Start difference. First operand 4408 states and 6860 transitions. Second operand 5 states. [2020-10-15 03:55:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:30,358 INFO L93 Difference]: Finished difference Result 8090 states and 12525 transitions. [2020-10-15 03:55:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:55:30,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-15 03:55:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:30,380 INFO L225 Difference]: With dead ends: 8090 [2020-10-15 03:55:30,380 INFO L226 Difference]: Without dead ends: 4408 [2020-10-15 03:55:30,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:55:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2020-10-15 03:55:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4408. [2020-10-15 03:55:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4408 states. [2020-10-15 03:55:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 6796 transitions. [2020-10-15 03:55:30,591 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 6796 transitions. Word has length 88 [2020-10-15 03:55:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:30,591 INFO L479 AbstractCegarLoop]: Abstraction has 4408 states and 6796 transitions. [2020-10-15 03:55:30,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:55:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 6796 transitions. [2020-10-15 03:55:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 03:55:30,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:30,602 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] [2020-10-15 03:55:30,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:55:30,602 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:30,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1385711852, now seen corresponding path program 1 times [2020-10-15 03:55:30,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:30,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078360526] [2020-10-15 03:55:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:30,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:31,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:31,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:31,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-15 03:55:31,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:55:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-15 03:55:31,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:31,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:55:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 03:55:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:55:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:31,903 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:31,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:31,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:31,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:55:31,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:31,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:31,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078360526] [2020-10-15 03:55:31,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:31,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:55:31,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134425252] [2020-10-15 03:55:31,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:55:31,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:31,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:55:31,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:55:31,943 INFO L87 Difference]: Start difference. First operand 4408 states and 6796 transitions. Second operand 4 states. [2020-10-15 03:55:32,125 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:55:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:33,581 INFO L93 Difference]: Finished difference Result 9195 states and 14103 transitions. [2020-10-15 03:55:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:55:33,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-15 03:55:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:33,612 INFO L225 Difference]: With dead ends: 9195 [2020-10-15 03:55:33,613 INFO L226 Difference]: Without dead ends: 7305 [2020-10-15 03:55:33,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7305 states. [2020-10-15 03:55:34,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7305 to 7303. [2020-10-15 03:55:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-15 03:55:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 11141 transitions. [2020-10-15 03:55:34,043 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 11141 transitions. Word has length 89 [2020-10-15 03:55:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:34,046 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 11141 transitions. [2020-10-15 03:55:34,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:55:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 11141 transitions. [2020-10-15 03:55:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 03:55:34,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:34,068 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] [2020-10-15 03:55:34,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:55:34,069 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:34,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:34,069 INFO L82 PathProgramCache]: Analyzing trace with hash 50251447, now seen corresponding path program 1 times [2020-10-15 03:55:34,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:34,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055842347] [2020-10-15 03:55:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:34,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:34,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:34,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 03:55:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:55:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-15 03:55:34,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:34,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:55:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-15 03:55:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:55:34,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:34,693 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:34,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:34,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:34,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:34,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:55:34,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:34,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:34,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055842347] [2020-10-15 03:55:34,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:34,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:55:34,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583536223] [2020-10-15 03:55:34,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:55:34,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:34,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:55:34,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:34,733 INFO L87 Difference]: Start difference. First operand 7303 states and 11141 transitions. Second operand 5 states. [2020-10-15 03:55:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:36,688 INFO L93 Difference]: Finished difference Result 10297 states and 15680 transitions. [2020-10-15 03:55:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:55:36,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-15 03:55:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:36,733 INFO L225 Difference]: With dead ends: 10297 [2020-10-15 03:55:36,733 INFO L226 Difference]: Without dead ends: 10295 [2020-10-15 03:55:36,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:55:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10295 states. [2020-10-15 03:55:37,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10295 to 7367. [2020-10-15 03:55:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7367 states. [2020-10-15 03:55:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 11205 transitions. [2020-10-15 03:55:37,058 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 11205 transitions. Word has length 91 [2020-10-15 03:55:37,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:37,059 INFO L479 AbstractCegarLoop]: Abstraction has 7367 states and 11205 transitions. [2020-10-15 03:55:37,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:55:37,059 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 11205 transitions. [2020-10-15 03:55:37,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 03:55:37,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:37,075 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] [2020-10-15 03:55:37,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:55:37,076 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:37,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1567414832, now seen corresponding path program 1 times [2020-10-15 03:55:37,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:37,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545100839] [2020-10-15 03:55:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:37,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:37,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:37,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 03:55:37,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:37,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-15 03:55:37,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:37,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:55:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:55:37,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:55:37,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:37,414 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:37,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:37,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:37,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:37,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:55:37,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:37,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:37,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:37,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:37,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:37,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545100839] [2020-10-15 03:55:37,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:37,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:55:37,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282178453] [2020-10-15 03:55:37,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:55:37,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:37,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:55:37,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:37,448 INFO L87 Difference]: Start difference. First operand 7367 states and 11205 transitions. Second operand 5 states. [2020-10-15 03:55:38,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:38,930 INFO L93 Difference]: Finished difference Result 14696 states and 22340 transitions. [2020-10-15 03:55:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:55:38,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-15 03:55:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:38,948 INFO L225 Difference]: With dead ends: 14696 [2020-10-15 03:55:38,948 INFO L226 Difference]: Without dead ends: 7367 [2020-10-15 03:55:38,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:55:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7367 states. [2020-10-15 03:55:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7367 to 7367. [2020-10-15 03:55:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7367 states. [2020-10-15 03:55:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 11173 transitions. [2020-10-15 03:55:39,430 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 11173 transitions. Word has length 92 [2020-10-15 03:55:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:39,431 INFO L479 AbstractCegarLoop]: Abstraction has 7367 states and 11173 transitions. [2020-10-15 03:55:39,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:55:39,431 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 11173 transitions. [2020-10-15 03:55:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-15 03:55:39,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:39,446 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] [2020-10-15 03:55:39,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:55:39,447 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:39,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1480140998, now seen corresponding path program 1 times [2020-10-15 03:55:39,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:39,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235860176] [2020-10-15 03:55:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:39,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:39,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:39,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:39,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:44,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:44,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-15 03:55:44,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:55:44,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 03:55:44,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:44,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:55:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:55:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:55:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:44,740 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:44,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:44,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:44,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:44,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:44,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:55:44,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:44,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:44,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235860176] [2020-10-15 03:55:44,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:44,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:55:44,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400032320] [2020-10-15 03:55:44,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:55:44,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:44,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:55:44,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:55:44,859 INFO L87 Difference]: Start difference. First operand 7367 states and 11173 transitions. Second operand 8 states. [2020-10-15 03:55:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:49,251 INFO L93 Difference]: Finished difference Result 36869 states and 55176 transitions. [2020-10-15 03:55:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:55:49,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-15 03:55:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:49,329 INFO L225 Difference]: With dead ends: 36869 [2020-10-15 03:55:49,329 INFO L226 Difference]: Without dead ends: 29988 [2020-10-15 03:55:49,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:55:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29988 states. [2020-10-15 03:55:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29988 to 29980. [2020-10-15 03:55:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29980 states. [2020-10-15 03:55:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29980 states to 29980 states and 44620 transitions. [2020-10-15 03:55:51,428 INFO L78 Accepts]: Start accepts. Automaton has 29980 states and 44620 transitions. Word has length 123 [2020-10-15 03:55:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:51,429 INFO L479 AbstractCegarLoop]: Abstraction has 29980 states and 44620 transitions. [2020-10-15 03:55:51,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:55:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 29980 states and 44620 transitions. [2020-10-15 03:55:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 03:55:51,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:51,623 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] [2020-10-15 03:55:51,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:55:51,624 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:51,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1817839973, now seen corresponding path program 1 times [2020-10-15 03:55:51,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:51,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649205309] [2020-10-15 03:55:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:51,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:53,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:56,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 03:55:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:55:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:55:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:56,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:55:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:55:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:55:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:55:56,867 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:55:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:56,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:56,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:56,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:55:56,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:56,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:56,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649205309] [2020-10-15 03:55:56,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:56,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:55:56,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880019056] [2020-10-15 03:55:56,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:55:56,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:56,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:55:56,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:55:56,915 INFO L87 Difference]: Start difference. First operand 29980 states and 44620 transitions. Second operand 8 states. [2020-10-15 03:55:57,158 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:56:02,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:02,196 INFO L93 Difference]: Finished difference Result 90141 states and 134085 transitions. [2020-10-15 03:56:02,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:56:02,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-15 03:56:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:02,372 INFO L225 Difference]: With dead ends: 90141 [2020-10-15 03:56:02,373 INFO L226 Difference]: Without dead ends: 83291 [2020-10-15 03:56:02,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:56:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83291 states. [2020-10-15 03:56:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83291 to 46207. [2020-10-15 03:56:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46207 states. [2020-10-15 03:56:05,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46207 states to 46207 states and 68651 transitions. [2020-10-15 03:56:05,231 INFO L78 Accepts]: Start accepts. Automaton has 46207 states and 68651 transitions. Word has length 124 [2020-10-15 03:56:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:05,232 INFO L479 AbstractCegarLoop]: Abstraction has 46207 states and 68651 transitions. [2020-10-15 03:56:05,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:56:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 46207 states and 68651 transitions. [2020-10-15 03:56:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 03:56:05,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:05,280 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] [2020-10-15 03:56:05,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:56:05,281 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:05,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:05,281 INFO L82 PathProgramCache]: Analyzing trace with hash 2028672037, now seen corresponding path program 1 times [2020-10-15 03:56:05,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:05,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921661646] [2020-10-15 03:56:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:05,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:05,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:09,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:10,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:10,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 03:56:10,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:56:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:56:10,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:10,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:56:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:56:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 03:56:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:10,606 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:56:10,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:10,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:10,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:10,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:56:10,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:10,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:10,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921661646] [2020-10-15 03:56:10,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:10,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:56:10,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843153744] [2020-10-15 03:56:10,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:56:10,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:10,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:56:10,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:56:10,680 INFO L87 Difference]: Start difference. First operand 46207 states and 68651 transitions. Second operand 6 states. [2020-10-15 03:56:10,871 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:56:19,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:19,262 INFO L93 Difference]: Finished difference Result 150787 states and 224119 transitions. [2020-10-15 03:56:19,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:56:19,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-15 03:56:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:19,464 INFO L225 Difference]: With dead ends: 150787 [2020-10-15 03:56:19,464 INFO L226 Difference]: Without dead ends: 108219 [2020-10-15 03:56:19,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108219 states. [2020-10-15 03:56:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108219 to 108213. [2020-10-15 03:56:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108213 states. [2020-10-15 03:56:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108213 states to 108213 states and 159400 transitions. [2020-10-15 03:56:27,724 INFO L78 Accepts]: Start accepts. Automaton has 108213 states and 159400 transitions. Word has length 124 [2020-10-15 03:56:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:27,724 INFO L479 AbstractCegarLoop]: Abstraction has 108213 states and 159400 transitions. [2020-10-15 03:56:27,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:56:27,724 INFO L276 IsEmpty]: Start isEmpty. Operand 108213 states and 159400 transitions. [2020-10-15 03:56:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 03:56:27,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:27,821 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] [2020-10-15 03:56:27,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:56:27,822 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:27,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:27,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2101097827, now seen corresponding path program 1 times [2020-10-15 03:56:27,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:27,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935757112] [2020-10-15 03:56:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:28,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:29,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:32,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:32,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 03:56:32,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:56:32,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:56:32,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:32,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:56:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:56:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:56:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:33,073 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:56:33,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:33,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:33,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:33,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:56:33,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:33,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:33,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935757112] [2020-10-15 03:56:33,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:33,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:56:33,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111105178] [2020-10-15 03:56:33,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:56:33,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:56:33,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:33,109 INFO L87 Difference]: Start difference. First operand 108213 states and 159400 transitions. Second operand 8 states. [2020-10-15 03:56:33,342 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:56:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:48,061 INFO L93 Difference]: Finished difference Result 264327 states and 390202 transitions. [2020-10-15 03:56:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:56:48,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-15 03:56:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:48,339 INFO L225 Difference]: With dead ends: 264327 [2020-10-15 03:56:48,340 INFO L226 Difference]: Without dead ends: 230005 [2020-10-15 03:56:48,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:56:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230005 states. [2020-10-15 03:57:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230005 to 146233. [2020-10-15 03:57:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146233 states. [2020-10-15 03:57:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146233 states to 146233 states and 214981 transitions. [2020-10-15 03:57:00,809 INFO L78 Accepts]: Start accepts. Automaton has 146233 states and 214981 transitions. Word has length 124 [2020-10-15 03:57:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:00,810 INFO L479 AbstractCegarLoop]: Abstraction has 146233 states and 214981 transitions. [2020-10-15 03:57:00,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:57:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 146233 states and 214981 transitions. [2020-10-15 03:57:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 03:57:00,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:00,921 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] [2020-10-15 03:57:00,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:57:00,922 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:00,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:00,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1173394901, now seen corresponding path program 1 times [2020-10-15 03:57:00,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:00,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227611657] [2020-10-15 03:57:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:00,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:00,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:02,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:02,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:05,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 03:57:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:57:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:57:05,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:05,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:57:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:57:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:57:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:06,175 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:57:06,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:06,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:06,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:06,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:57:06,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:06,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:57:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:57:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:57:06,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227611657] [2020-10-15 03:57:06,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:06,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:57:06,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738880281] [2020-10-15 03:57:06,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:57:06,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:06,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:57:06,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:57:06,221 INFO L87 Difference]: Start difference. First operand 146233 states and 214981 transitions. Second operand 8 states. [2020-10-15 03:57:06,467 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:57:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:24,001 INFO L93 Difference]: Finished difference Result 298338 states and 439943 transitions. [2020-10-15 03:57:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:57:24,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-15 03:57:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:24,346 INFO L225 Difference]: With dead ends: 298338 [2020-10-15 03:57:24,346 INFO L226 Difference]: Without dead ends: 253920 [2020-10-15 03:57:24,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:57:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253920 states. [2020-10-15 03:57:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253920 to 173375. [2020-10-15 03:57:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173375 states. [2020-10-15 03:57:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173375 states to 173375 states and 254526 transitions. [2020-10-15 03:57:40,226 INFO L78 Accepts]: Start accepts. Automaton has 173375 states and 254526 transitions. Word has length 124 [2020-10-15 03:57:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:40,227 INFO L479 AbstractCegarLoop]: Abstraction has 173375 states and 254526 transitions. [2020-10-15 03:57:40,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:57:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 173375 states and 254526 transitions. [2020-10-15 03:57:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 03:57:40,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:40,337 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 03:57:40,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:57:40,338 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:40,338 INFO L82 PathProgramCache]: Analyzing trace with hash -506519514, now seen corresponding path program 1 times [2020-10-15 03:57:40,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:40,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433821524] [2020-10-15 03:57:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:40,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:40,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:45,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:45,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 03:57:45,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:57:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:57:45,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:45,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:57:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:57:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:57:45,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:45,669 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:57:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:45,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:45,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:57:45,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:45,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:57:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:57:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:57:45,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433821524] [2020-10-15 03:57:45,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:45,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:57:45,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400675961] [2020-10-15 03:57:45,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:57:45,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:45,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:57:45,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:57:45,727 INFO L87 Difference]: Start difference. First operand 173375 states and 254526 transitions. Second operand 8 states. [2020-10-15 03:57:45,928 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-15 03:58:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:07,427 INFO L93 Difference]: Finished difference Result 416344 states and 603642 transitions. [2020-10-15 03:58:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:58:07,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-15 03:58:07,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:07,783 INFO L225 Difference]: With dead ends: 416344 [2020-10-15 03:58:07,783 INFO L226 Difference]: Without dead ends: 261790 [2020-10-15 03:58:07,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:58:08,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261790 states.