/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.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:36:47,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:36:47,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:36:47,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:36:47,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:36:47,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:36:47,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:36:47,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:36:47,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:36:47,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:36:47,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:36:47,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:36:47,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:36:47,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:36:47,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:36:47,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:36:47,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:36:47,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:36:47,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:36:47,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:36:47,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:36:47,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:36:47,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:36:47,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:36:47,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:36:47,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:36:47,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:36:47,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:36:47,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:36:47,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:36:47,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:36:47,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:36:47,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:36:47,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:36:47,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:36:47,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:36:47,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:36:47,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:36:47,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:36:47,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:36:47,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:36:47,902 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 03:36:47,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:36:47,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:36:47,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:36:47,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:36:47,925 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:36:47,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:36:47,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:36:47,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:36:47,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:36:47,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:36:47,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:36:47,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:36:47,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:36:47,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:36:47,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:36:47,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:36:47,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:36:47,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:36:47,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:36:47,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:36:47,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:36:47,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:36:47,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:36:47,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:36:47,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:36:47,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:36:47,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:36:47,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:36:47,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:36:47,930 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 03:36:48,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:36:48,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:36:48,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:36:48,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:36:48,272 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:36:48,273 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2020-10-15 03:36:48,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d94354a7d/6e9f4302cc2242f699389d0aab17c78d/FLAGc32ef4c04 [2020-10-15 03:36:48,881 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:36:48,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2020-10-15 03:36:48,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d94354a7d/6e9f4302cc2242f699389d0aab17c78d/FLAGc32ef4c04 [2020-10-15 03:36:49,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d94354a7d/6e9f4302cc2242f699389d0aab17c78d [2020-10-15 03:36:49,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:36:49,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:36:49,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:36:49,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:36:49,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:36:49,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:36:49" (1/1) ... [2020-10-15 03:36:49,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a3b6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:49, skipping insertion in model container [2020-10-15 03:36:49,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:36:49" (1/1) ... [2020-10-15 03:36:49,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:36:49,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:36:49,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:36:49,882 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:36:50,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:36:50,071 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:36:50,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50 WrapperNode [2020-10-15 03:36:50,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:36:50,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:36:50,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:36:50,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:36:50,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50" (1/1) ... [2020-10-15 03:36:50,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50" (1/1) ... [2020-10-15 03:36:50,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50" (1/1) ... [2020-10-15 03:36:50,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50" (1/1) ... [2020-10-15 03:36:50,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50" (1/1) ... [2020-10-15 03:36:50,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50" (1/1) ... [2020-10-15 03:36:50,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50" (1/1) ... [2020-10-15 03:36:50,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:36:50,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:36:50,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:36:50,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:36:50,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50" (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 03:36:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:36:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:36:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:36:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:36:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:36:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:36:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:36:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:36:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:36:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:36:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:36:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:36:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:36:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:36:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:36:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:36:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:36:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:36:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:36:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-15 03:36:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:36:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:36:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:36:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:36:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:36:51,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:36:51,370 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:36:51,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:36:51 BoogieIcfgContainer [2020-10-15 03:36:51,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:36:51,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:36:51,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:36:51,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:36:51,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:36:49" (1/3) ... [2020-10-15 03:36:51,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37274ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:36:51, skipping insertion in model container [2020-10-15 03:36:51,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:36:50" (2/3) ... [2020-10-15 03:36:51,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37274ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:36:51, skipping insertion in model container [2020-10-15 03:36:51,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:36:51" (3/3) ... [2020-10-15 03:36:51,385 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2020-10-15 03:36:51,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:36:51,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:36:51,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:36:51,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:36:51,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:36:51,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:36:51,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:36:51,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:36:51,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:36:51,444 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:36:51,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:36:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2020-10-15 03:36:51,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-15 03:36:51,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:51,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:51,482 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:51,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:51,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1609228235, now seen corresponding path program 1 times [2020-10-15 03:36:51,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:51,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501662393] [2020-10-15 03:36:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:53,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:56,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:56,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-15 03:36:56,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:36:56,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-15 03:36:56,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:56,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:36:56,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:36:57,484 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:36:57,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:57,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:57,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:57,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:57,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:57,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 03:36:57,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:57,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:57,610 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 03:36:57,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501662393] [2020-10-15 03:36:57,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:57,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:57,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541198222] [2020-10-15 03:36:57,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:57,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:57,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:57,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:57,640 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 6 states. [2020-10-15 03:36:58,017 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-15 03:36:59,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:59,515 INFO L93 Difference]: Finished difference Result 522 states and 875 transitions. [2020-10-15 03:36:59,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:59,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-10-15 03:36:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:59,532 INFO L225 Difference]: With dead ends: 522 [2020-10-15 03:36:59,533 INFO L226 Difference]: Without dead ends: 349 [2020-10-15 03:36:59,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-15 03:36:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-10-15 03:36:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-15 03:36:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 495 transitions. [2020-10-15 03:36:59,614 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 495 transitions. Word has length 129 [2020-10-15 03:36:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:59,615 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 495 transitions. [2020-10-15 03:36:59,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 495 transitions. [2020-10-15 03:36:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-15 03:36:59,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:59,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:59,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:36:59,619 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:59,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2084941727, now seen corresponding path program 1 times [2020-10-15 03:36:59,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:59,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624011252] [2020-10-15 03:36:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:59,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:59,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:00,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:00,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:01,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:03,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:04,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-15 03:37:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:37:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:37:04,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:04,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:37:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 03:37:04,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:05,112 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:37:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:05,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:05,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:05,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:05,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 03:37:05,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:05,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:37:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:37:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:05,212 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 03:37:05,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624011252] [2020-10-15 03:37:05,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:05,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:37:05,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652992227] [2020-10-15 03:37:05,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:05,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:05,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:05,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:05,218 INFO L87 Difference]: Start difference. First operand 347 states and 495 transitions. Second operand 6 states. [2020-10-15 03:37:05,520 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-15 03:37:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:06,687 INFO L93 Difference]: Finished difference Result 771 states and 1163 transitions. [2020-10-15 03:37:06,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:06,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-10-15 03:37:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:06,694 INFO L225 Difference]: With dead ends: 771 [2020-10-15 03:37:06,694 INFO L226 Difference]: Without dead ends: 524 [2020-10-15 03:37:06,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:37:06,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-10-15 03:37:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2020-10-15 03:37:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-10-15 03:37:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 771 transitions. [2020-10-15 03:37:06,739 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 771 transitions. Word has length 130 [2020-10-15 03:37:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:06,739 INFO L479 AbstractCegarLoop]: Abstraction has 522 states and 771 transitions. [2020-10-15 03:37:06,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:06,740 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 771 transitions. [2020-10-15 03:37:06,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 03:37:06,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:06,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:06,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:37:06,743 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:06,744 INFO L82 PathProgramCache]: Analyzing trace with hash -580430677, now seen corresponding path program 1 times [2020-10-15 03:37:06,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:06,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272550911] [2020-10-15 03:37:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:06,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:06,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:11,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:11,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-15 03:37:11,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:37:11,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:37:11,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:11,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:37:11,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 03:37:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:12,186 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:37:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:12,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:12,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:12,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 03:37:12,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:12,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:37:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:37:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:12,313 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 03:37:12,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272550911] [2020-10-15 03:37:12,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:12,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:37:12,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193584436] [2020-10-15 03:37:12,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:12,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:12,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:12,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:12,325 INFO L87 Difference]: Start difference. First operand 522 states and 771 transitions. Second operand 6 states. [2020-10-15 03:37:12,660 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-15 03:37:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:13,704 INFO L93 Difference]: Finished difference Result 1328 states and 2037 transitions. [2020-10-15 03:37:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:13,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-15 03:37:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:13,711 INFO L225 Difference]: With dead ends: 1328 [2020-10-15 03:37:13,711 INFO L226 Difference]: Without dead ends: 894 [2020-10-15 03:37:13,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:37:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-15 03:37:13,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 892. [2020-10-15 03:37:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-15 03:37:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1352 transitions. [2020-10-15 03:37:13,782 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1352 transitions. Word has length 131 [2020-10-15 03:37:13,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:13,783 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1352 transitions. [2020-10-15 03:37:13,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1352 transitions. [2020-10-15 03:37:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 03:37:13,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:13,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:13,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:37:13,786 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:13,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:13,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2130848910, now seen corresponding path program 1 times [2020-10-15 03:37:13,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:13,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376779171] [2020-10-15 03:37:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:13,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:13,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:14,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:14,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:14,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:18,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:18,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 03:37:18,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:37:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-15 03:37:18,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:18,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:37:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 03:37:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:19,184 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:37:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:19,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:19,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:19,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:19,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:19,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:37:19,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:19,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:37:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:37:19,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:19,260 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 03:37:19,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376779171] [2020-10-15 03:37:19,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:19,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:37:19,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110110215] [2020-10-15 03:37:19,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:19,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:19,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:19,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:19,263 INFO L87 Difference]: Start difference. First operand 892 states and 1352 transitions. Second operand 6 states. [2020-10-15 03:37:19,537 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-15 03:37:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:20,708 INFO L93 Difference]: Finished difference Result 2410 states and 3737 transitions. [2020-10-15 03:37:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:20,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-15 03:37:20,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:20,718 INFO L225 Difference]: With dead ends: 2410 [2020-10-15 03:37:20,719 INFO L226 Difference]: Without dead ends: 1610 [2020-10-15 03:37:20,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:37:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2020-10-15 03:37:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1608. [2020-10-15 03:37:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2020-10-15 03:37:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2471 transitions. [2020-10-15 03:37:20,814 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2471 transitions. Word has length 132 [2020-10-15 03:37:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:20,815 INFO L479 AbstractCegarLoop]: Abstraction has 1608 states and 2471 transitions. [2020-10-15 03:37:20,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2471 transitions. [2020-10-15 03:37:20,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 03:37:20,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:20,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:20,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:37:20,819 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:20,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:20,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1251125180, now seen corresponding path program 1 times [2020-10-15 03:37:20,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:20,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011891581] [2020-10-15 03:37:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:20,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:21,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:22,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:25,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 03:37:25,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:37:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:37:25,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:25,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:37:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 03:37:25,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:26,168 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:37:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:26,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:26,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:26,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:37:26,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:26,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:37:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:37:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:26,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011891581] [2020-10-15 03:37:26,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:26,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:37:26,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789827906] [2020-10-15 03:37:26,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:26,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:26,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:26,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:26,247 INFO L87 Difference]: Start difference. First operand 1608 states and 2471 transitions. Second operand 6 states. [2020-10-15 03:37:26,574 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-15 03:37:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:27,651 INFO L93 Difference]: Finished difference Result 3120 states and 4842 transitions. [2020-10-15 03:37:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:27,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-10-15 03:37:27,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:27,662 INFO L225 Difference]: With dead ends: 3120 [2020-10-15 03:37:27,662 INFO L226 Difference]: Without dead ends: 1608 [2020-10-15 03:37:27,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:37:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-10-15 03:37:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1608. [2020-10-15 03:37:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2020-10-15 03:37:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2454 transitions. [2020-10-15 03:37:27,768 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2454 transitions. Word has length 133 [2020-10-15 03:37:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:27,769 INFO L479 AbstractCegarLoop]: Abstraction has 1608 states and 2454 transitions. [2020-10-15 03:37:27,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2454 transitions. [2020-10-15 03:37:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-15 03:37:27,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:27,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:27,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:37:27,772 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:27,772 INFO L82 PathProgramCache]: Analyzing trace with hash 277344701, now seen corresponding path program 1 times [2020-10-15 03:37:27,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:27,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433214286] [2020-10-15 03:37:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:27,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:27,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:28,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:29,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:32,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:32,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 03:37:32,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:37:32,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:37:32,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:32,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:37:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 03:37:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:33,211 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:37:33,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:33,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:33,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:33,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:37:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:33,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:37:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:37:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:37:33,285 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 03:37:33,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433214286] [2020-10-15 03:37:33,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:33,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:37:33,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901414059] [2020-10-15 03:37:33,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:33,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:33,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:33,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:33,289 INFO L87 Difference]: Start difference. First operand 1608 states and 2454 transitions. Second operand 6 states. [2020-10-15 03:37:33,587 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-15 03:37:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:34,655 INFO L93 Difference]: Finished difference Result 4588 states and 7086 transitions. [2020-10-15 03:37:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:34,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-15 03:37:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:34,673 INFO L225 Difference]: With dead ends: 4588 [2020-10-15 03:37:34,673 INFO L226 Difference]: Without dead ends: 3064 [2020-10-15 03:37:34,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:37:34,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2020-10-15 03:37:34,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3062. [2020-10-15 03:37:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2020-10-15 03:37:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4701 transitions. [2020-10-15 03:37:34,878 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4701 transitions. Word has length 134 [2020-10-15 03:37:34,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:34,879 INFO L479 AbstractCegarLoop]: Abstraction has 3062 states and 4701 transitions. [2020-10-15 03:37:34,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4701 transitions. [2020-10-15 03:37:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-15 03:37:34,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:34,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:34,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:37:34,882 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:34,883 INFO L82 PathProgramCache]: Analyzing trace with hash 857726089, now seen corresponding path program 1 times [2020-10-15 03:37:34,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:34,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316166926] [2020-10-15 03:37:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:35,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:35,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:36,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:38,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:39,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:39,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-15 03:37:39,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:37:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:37:39,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:39,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:37:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:37:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:37:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:40,201 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2020-10-15 03:37:40,465 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:37:40,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:40,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:40,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:40,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:37:40,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:40,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:40,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:40,528 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 03:37:40,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316166926] [2020-10-15 03:37:40,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:40,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:37:40,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731518147] [2020-10-15 03:37:40,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:37:40,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:40,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:37:40,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:37:40,531 INFO L87 Difference]: Start difference. First operand 3062 states and 4701 transitions. Second operand 8 states. [2020-10-15 03:37:40,813 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-15 03:37:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:42,655 INFO L93 Difference]: Finished difference Result 7407 states and 11447 transitions. [2020-10-15 03:37:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:37:42,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-10-15 03:37:42,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:42,677 INFO L225 Difference]: With dead ends: 7407 [2020-10-15 03:37:42,678 INFO L226 Difference]: Without dead ends: 4456 [2020-10-15 03:37:42,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:37:42,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2020-10-15 03:37:42,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 3062. [2020-10-15 03:37:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2020-10-15 03:37:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4700 transitions. [2020-10-15 03:37:42,990 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4700 transitions. Word has length 135 [2020-10-15 03:37:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:42,991 INFO L479 AbstractCegarLoop]: Abstraction has 3062 states and 4700 transitions. [2020-10-15 03:37:42,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:37:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4700 transitions. [2020-10-15 03:37:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-15 03:37:42,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:42,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:42,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:37:42,994 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:42,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:42,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1830634359, now seen corresponding path program 1 times [2020-10-15 03:37:42,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:42,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292243944] [2020-10-15 03:37:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:47,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:48,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:48,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-15 03:37:48,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:37:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:37:48,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:48,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:37:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:37:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 03:37:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:48,477 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:37:48,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:48,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:48,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:48,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:37:48,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:48,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:48,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:48,567 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 03:37:48,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292243944] [2020-10-15 03:37:48,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:48,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:37:48,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332288911] [2020-10-15 03:37:48,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:37:48,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:48,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:37:48,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:37:48,569 INFO L87 Difference]: Start difference. First operand 3062 states and 4700 transitions. Second operand 9 states. [2020-10-15 03:37:48,881 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-15 03:37:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:50,867 INFO L93 Difference]: Finished difference Result 7424 states and 11454 transitions. [2020-10-15 03:37:50,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:37:50,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 136 [2020-10-15 03:37:50,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:50,888 INFO L225 Difference]: With dead ends: 7424 [2020-10-15 03:37:50,888 INFO L226 Difference]: Without dead ends: 4488 [2020-10-15 03:37:50,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:37:50,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2020-10-15 03:37:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 3062. [2020-10-15 03:37:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2020-10-15 03:37:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4698 transitions. [2020-10-15 03:37:51,331 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4698 transitions. Word has length 136 [2020-10-15 03:37:51,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:51,331 INFO L479 AbstractCegarLoop]: Abstraction has 3062 states and 4698 transitions. [2020-10-15 03:37:51,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:37:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4698 transitions. [2020-10-15 03:37:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-15 03:37:51,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:51,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:51,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:37:51,334 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:51,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:51,335 INFO L82 PathProgramCache]: Analyzing trace with hash -481508535, now seen corresponding path program 1 times [2020-10-15 03:37:51,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:51,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079126739] [2020-10-15 03:37:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:51,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:51,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:52,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:56,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:56,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 03:37:56,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:37:56,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:37:56,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:56,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:37:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:37:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-15 03:37:56,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:56,853 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:37:56,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:56,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:56,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:56,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:56,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:37:56,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:56,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:56,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:56,920 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 03:37:56,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079126739] [2020-10-15 03:37:56,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:56,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:37:56,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839648704] [2020-10-15 03:37:56,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:37:56,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:56,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:37:56,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:37:56,922 INFO L87 Difference]: Start difference. First operand 3062 states and 4698 transitions. Second operand 9 states. [2020-10-15 03:37:57,232 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-15 03:37:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:59,336 INFO L93 Difference]: Finished difference Result 7326 states and 11300 transitions. [2020-10-15 03:37:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:37:59,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-10-15 03:37:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:59,355 INFO L225 Difference]: With dead ends: 7326 [2020-10-15 03:37:59,356 INFO L226 Difference]: Without dead ends: 4488 [2020-10-15 03:37:59,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:37:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2020-10-15 03:37:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 3062. [2020-10-15 03:37:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2020-10-15 03:37:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4694 transitions. [2020-10-15 03:37:59,793 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4694 transitions. Word has length 137 [2020-10-15 03:37:59,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:59,793 INFO L479 AbstractCegarLoop]: Abstraction has 3062 states and 4694 transitions. [2020-10-15 03:37:59,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:37:59,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4694 transitions. [2020-10-15 03:37:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-15 03:37:59,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:59,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:59,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:37:59,796 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:59,797 INFO L82 PathProgramCache]: Analyzing trace with hash -127243447, now seen corresponding path program 1 times [2020-10-15 03:37:59,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:59,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691031416] [2020-10-15 03:37:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:59,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:59,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:01,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:02,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:04,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:04,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:04,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-15 03:38:04,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:38:04,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:38:04,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:04,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:38:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:38:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-15 03:38:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:05,081 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 27 [2020-10-15 03:38:05,355 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:38:05,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:05,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:05,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:05,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:38:05,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:05,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:05,416 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 03:38:05,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691031416] [2020-10-15 03:38:05,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:05,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:38:05,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704141417] [2020-10-15 03:38:05,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:38:05,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:05,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:38:05,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:38:05,418 INFO L87 Difference]: Start difference. First operand 3062 states and 4694 transitions. Second operand 9 states. [2020-10-15 03:38:05,724 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-15 03:38:09,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:09,618 INFO L93 Difference]: Finished difference Result 14062 states and 21610 transitions. [2020-10-15 03:38:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 03:38:09,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 138 [2020-10-15 03:38:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:09,657 INFO L225 Difference]: With dead ends: 14062 [2020-10-15 03:38:09,658 INFO L226 Difference]: Without dead ends: 11292 [2020-10-15 03:38:09,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:38:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2020-10-15 03:38:10,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 3110. [2020-10-15 03:38:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-15 03:38:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4758 transitions. [2020-10-15 03:38:10,158 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4758 transitions. Word has length 138 [2020-10-15 03:38:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:38:10,159 INFO L479 AbstractCegarLoop]: Abstraction has 3110 states and 4758 transitions. [2020-10-15 03:38:10,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:38:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4758 transitions. [2020-10-15 03:38:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 03:38:10,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:38:10,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:38:10,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:38:10,162 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:38:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:38:10,162 INFO L82 PathProgramCache]: Analyzing trace with hash 748464006, now seen corresponding path program 1 times [2020-10-15 03:38:10,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:38:10,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958702600] [2020-10-15 03:38:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:38:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:10,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:10,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:11,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:11,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:15,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:15,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 03:38:15,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:38:15,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:38:15,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:15,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:38:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:38:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 03:38:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:15,418 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 24 [2020-10-15 03:38:15,686 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:38:15,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:15,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:15,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:15,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:15,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:38:15,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:15,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:15,737 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 03:38:15,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958702600] [2020-10-15 03:38:15,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:15,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:38:15,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421323567] [2020-10-15 03:38:15,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:38:15,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:15,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:38:15,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:38:15,739 INFO L87 Difference]: Start difference. First operand 3110 states and 4758 transitions. Second operand 9 states. [2020-10-15 03:38:16,048 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-15 03:38:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:19,039 INFO L93 Difference]: Finished difference Result 7378 states and 11360 transitions. [2020-10-15 03:38:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:38:19,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-10-15 03:38:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:19,056 INFO L225 Difference]: With dead ends: 7378 [2020-10-15 03:38:19,056 INFO L226 Difference]: Without dead ends: 4536 [2020-10-15 03:38:19,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:38:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2020-10-15 03:38:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3110. [2020-10-15 03:38:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-15 03:38:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4750 transitions. [2020-10-15 03:38:19,715 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4750 transitions. Word has length 139 [2020-10-15 03:38:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:38:19,715 INFO L479 AbstractCegarLoop]: Abstraction has 3110 states and 4750 transitions. [2020-10-15 03:38:19,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:38:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4750 transitions. [2020-10-15 03:38:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 03:38:19,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:38:19,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:38:19,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:38:19,718 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:38:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:38:19,718 INFO L82 PathProgramCache]: Analyzing trace with hash -256117380, now seen corresponding path program 1 times [2020-10-15 03:38:19,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:38:19,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237288] [2020-10-15 03:38:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:38:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:19,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:19,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:20,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:20,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:20,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:21,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:22,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:22,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:23,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:23,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:24,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:24,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 03:38:24,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:38:24,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:38:24,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:24,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:38:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:38:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-15 03:38:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:25,168 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:38:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:25,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:25,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:25,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:25,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:38:25,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:25,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:25,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:25,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:25,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:25,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:25,218 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 03:38:25,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237288] [2020-10-15 03:38:25,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:25,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:38:25,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582311804] [2020-10-15 03:38:25,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:38:25,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:25,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:38:25,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:38:25,220 INFO L87 Difference]: Start difference. First operand 3110 states and 4750 transitions. Second operand 9 states. [2020-10-15 03:38:25,533 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-15 03:38:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:28,467 INFO L93 Difference]: Finished difference Result 7370 states and 11328 transitions. [2020-10-15 03:38:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:38:28,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2020-10-15 03:38:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:28,479 INFO L225 Difference]: With dead ends: 7370 [2020-10-15 03:38:28,480 INFO L226 Difference]: Without dead ends: 4536 [2020-10-15 03:38:28,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:38:28,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2020-10-15 03:38:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3110. [2020-10-15 03:38:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-15 03:38:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4734 transitions. [2020-10-15 03:38:29,248 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4734 transitions. Word has length 140 [2020-10-15 03:38:29,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:38:29,248 INFO L479 AbstractCegarLoop]: Abstraction has 3110 states and 4734 transitions. [2020-10-15 03:38:29,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:38:29,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4734 transitions. [2020-10-15 03:38:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-15 03:38:29,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:38:29,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:38:29,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:38:29,251 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:38:29,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:38:29,251 INFO L82 PathProgramCache]: Analyzing trace with hash 486199696, now seen corresponding path program 1 times [2020-10-15 03:38:29,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:38:29,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708648427] [2020-10-15 03:38:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:38:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:29,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:34,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:34,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-15 03:38:34,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:38:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:38:34,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:34,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 03:38:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:38:34,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-15 03:38:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:34,635 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:38:34,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:34,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:34,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:34,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:34,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:34,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:38:34,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:34,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:34,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:34,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:34,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:34,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:34,750 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 03:38:34,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708648427] [2020-10-15 03:38:34,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:34,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 03:38:34,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009076447] [2020-10-15 03:38:34,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 03:38:34,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:34,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 03:38:34,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:38:34,752 INFO L87 Difference]: Start difference. First operand 3110 states and 4734 transitions. Second operand 11 states. [2020-10-15 03:38:35,099 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-15 03:38:46,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:46,385 INFO L93 Difference]: Finished difference Result 48315 states and 74811 transitions. [2020-10-15 03:38:46,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:38:46,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2020-10-15 03:38:46,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:46,480 INFO L225 Difference]: With dead ends: 48315 [2020-10-15 03:38:46,481 INFO L226 Difference]: Without dead ends: 45545 [2020-10-15 03:38:46,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:38:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45545 states. [2020-10-15 03:38:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45545 to 6107. [2020-10-15 03:38:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6107 states. [2020-10-15 03:38:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6107 states to 6107 states and 9288 transitions. [2020-10-15 03:38:48,078 INFO L78 Accepts]: Start accepts. Automaton has 6107 states and 9288 transitions. Word has length 141 [2020-10-15 03:38:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:38:48,078 INFO L479 AbstractCegarLoop]: Abstraction has 6107 states and 9288 transitions. [2020-10-15 03:38:48,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 03:38:48,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6107 states and 9288 transitions. [2020-10-15 03:38:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-15 03:38:48,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:38:48,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:38:48,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:38:48,082 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:38:48,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:38:48,083 INFO L82 PathProgramCache]: Analyzing trace with hash 310127997, now seen corresponding path program 1 times [2020-10-15 03:38:48,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:38:48,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991476513] [2020-10-15 03:38:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:38:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:48,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:48,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:53,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:53,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-15 03:38:53,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:38:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:38:53,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:53,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:38:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 03:38:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 03:38:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:53,404 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:38:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:53,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:53,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:53,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:53,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:38:53,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:53,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:53,467 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 03:38:53,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991476513] [2020-10-15 03:38:53,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:53,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:38:53,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601547563] [2020-10-15 03:38:53,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:38:53,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:53,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:38:53,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:38:53,469 INFO L87 Difference]: Start difference. First operand 6107 states and 9288 transitions. Second operand 6 states. [2020-10-15 03:38:53,755 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-15 03:38:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:57,563 INFO L93 Difference]: Finished difference Result 17149 states and 26311 transitions. [2020-10-15 03:38:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:38:57,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-15 03:38:57,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:57,586 INFO L225 Difference]: With dead ends: 17149 [2020-10-15 03:38:57,586 INFO L226 Difference]: Without dead ends: 11611 [2020-10-15 03:38:57,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:38:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11611 states. [2020-10-15 03:39:00,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11611 to 11607. [2020-10-15 03:39:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11607 states. [2020-10-15 03:39:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11607 states to 11607 states and 17700 transitions. [2020-10-15 03:39:00,570 INFO L78 Accepts]: Start accepts. Automaton has 11607 states and 17700 transitions. Word has length 142 [2020-10-15 03:39:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:39:00,570 INFO L479 AbstractCegarLoop]: Abstraction has 11607 states and 17700 transitions. [2020-10-15 03:39:00,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:39:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 11607 states and 17700 transitions. [2020-10-15 03:39:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-15 03:39:00,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:39:00,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:39:00,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:39:00,574 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:39:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:39:00,574 INFO L82 PathProgramCache]: Analyzing trace with hash -897506049, now seen corresponding path program 1 times [2020-10-15 03:39:00,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:39:00,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165593091] [2020-10-15 03:39:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:39:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:05,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:05,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-15 03:39:05,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:39:05,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:39:05,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:05,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:05,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:39:05,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 03:39:05,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 03:39:05,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:39:05,917 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:39:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:39:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:05,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:05,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:39:05,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:39:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:39:05,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:05,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:39:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:39:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:39:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:39:05,972 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 03:39:05,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165593091] [2020-10-15 03:39:05,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:39:05,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:39:05,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379245219] [2020-10-15 03:39:05,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:39:05,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:39:05,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:39:05,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:39:05,974 INFO L87 Difference]: Start difference. First operand 11607 states and 17700 transitions. Second operand 6 states. [2020-10-15 03:39:06,273 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-15 03:39:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:39:11,957 INFO L93 Difference]: Finished difference Result 29645 states and 45319 transitions. [2020-10-15 03:39:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:39:11,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-15 03:39:11,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:39:11,976 INFO L225 Difference]: With dead ends: 29645 [2020-10-15 03:39:11,976 INFO L226 Difference]: Without dead ends: 18699 [2020-10-15 03:39:11,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:39:12,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18699 states. [2020-10-15 03:39:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18699 to 17207. [2020-10-15 03:39:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17207 states. [2020-10-15 03:39:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17207 states to 17207 states and 26324 transitions. [2020-10-15 03:39:15,990 INFO L78 Accepts]: Start accepts. Automaton has 17207 states and 26324 transitions. Word has length 142 [2020-10-15 03:39:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:39:15,990 INFO L479 AbstractCegarLoop]: Abstraction has 17207 states and 26324 transitions. [2020-10-15 03:39:15,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:39:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 17207 states and 26324 transitions. [2020-10-15 03:39:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-15 03:39:15,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:39:15,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:39:15,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:39:15,996 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:39:15,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:39:15,997 INFO L82 PathProgramCache]: Analyzing trace with hash 400036194, now seen corresponding path program 1 times [2020-10-15 03:39:15,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:39:15,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717342863] [2020-10-15 03:39:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:39:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:17,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:21,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:21,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-15 03:39:21,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:39:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:39:21,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:21,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:39:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:39:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-15 03:39:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:39:21,637 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:39:21,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:39:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:21,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:21,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:21,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:39:21,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:39:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:39:21,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:21,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:39:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:39:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:39:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:39:21,744 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 03:39:21,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717342863] [2020-10-15 03:39:21,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:39:21,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:39:21,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355706373] [2020-10-15 03:39:21,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:39:21,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:39:21,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:39:21,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:39:21,747 INFO L87 Difference]: Start difference. First operand 17207 states and 26324 transitions. Second operand 10 states. [2020-10-15 03:39:22,167 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-15 03:39:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:39:41,540 INFO L93 Difference]: Finished difference Result 81087 states and 124192 transitions. [2020-10-15 03:39:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:39:41,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 142 [2020-10-15 03:39:41,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:39:41,614 INFO L225 Difference]: With dead ends: 81087 [2020-10-15 03:39:41,615 INFO L226 Difference]: Without dead ends: 64605 [2020-10-15 03:39:41,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:39:41,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64605 states. [2020-10-15 03:39:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64605 to 17319. [2020-10-15 03:39:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17319 states. [2020-10-15 03:39:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17319 states to 17319 states and 26492 transitions. [2020-10-15 03:39:46,597 INFO L78 Accepts]: Start accepts. Automaton has 17319 states and 26492 transitions. Word has length 142 [2020-10-15 03:39:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:39:46,597 INFO L479 AbstractCegarLoop]: Abstraction has 17319 states and 26492 transitions. [2020-10-15 03:39:46,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:39:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 17319 states and 26492 transitions. [2020-10-15 03:39:46,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-15 03:39:46,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:39:46,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:46,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:39:46,602 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:39:46,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:39:46,603 INFO L82 PathProgramCache]: Analyzing trace with hash -825651970, now seen corresponding path program 1 times [2020-10-15 03:39:46,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:39:46,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027305131] [2020-10-15 03:39:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:39:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:46,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:51,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:51,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-15 03:39:51,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:39:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:39:51,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:51,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:39:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:39:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-15 03:39:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:39:51,903 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 24 [2020-10-15 03:39:52,191 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:39:52,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:39:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:52,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:52,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:52,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:39:52,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:39:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:39:52,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:52,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:39:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:39:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:39:52,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:39:52,270 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 03:39:52,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027305131] [2020-10-15 03:39:52,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:39:52,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:39:52,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359663820] [2020-10-15 03:39:52,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:39:52,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:39:52,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:39:52,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:39:52,272 INFO L87 Difference]: Start difference. First operand 17319 states and 26492 transitions. Second operand 10 states. [2020-10-15 03:39:52,580 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-15 03:40:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:40:01,584 INFO L93 Difference]: Finished difference Result 42179 states and 64726 transitions. [2020-10-15 03:40:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:40:01,585 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 142 [2020-10-15 03:40:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:40:01,614 INFO L225 Difference]: With dead ends: 42179 [2020-10-15 03:40:01,614 INFO L226 Difference]: Without dead ends: 25609 [2020-10-15 03:40:01,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:40:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25609 states. [2020-10-15 03:40:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25609 to 17319. [2020-10-15 03:40:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17319 states. [2020-10-15 03:40:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17319 states to 17319 states and 26472 transitions. [2020-10-15 03:40:06,368 INFO L78 Accepts]: Start accepts. Automaton has 17319 states and 26472 transitions. Word has length 142 [2020-10-15 03:40:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:40:06,368 INFO L479 AbstractCegarLoop]: Abstraction has 17319 states and 26472 transitions. [2020-10-15 03:40:06,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:40:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 17319 states and 26472 transitions. [2020-10-15 03:40:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-15 03:40:06,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:40:06,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:40:06,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:40:06,372 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:40:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:40:06,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1846958823, now seen corresponding path program 1 times [2020-10-15 03:40:06,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:40:06,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151659974] [2020-10-15 03:40:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:40:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:07,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:11,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:11,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-15 03:40:11,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:40:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 03:40:11,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:11,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:40:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 03:40:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 03:40:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:11,699 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:40:11,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:40:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:11,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:11,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:11,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:40:11,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:40:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:40:11,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:11,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:40:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:40:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:40:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:11,735 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 03:40:11,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151659974] [2020-10-15 03:40:11,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:40:11,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:40:11,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445917812] [2020-10-15 03:40:11,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:40:11,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:40:11,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:40:11,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:40:11,737 INFO L87 Difference]: Start difference. First operand 17319 states and 26472 transitions. Second operand 6 states. [2020-10-15 03:40:11,990 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 200