/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:05:52,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:05:52,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:05:53,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:05:53,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:05:53,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:05:53,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:05:53,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:05:53,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:05:53,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:05:53,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:05:53,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:05:53,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:05:53,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:05:53,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:05:53,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:05:53,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:05:53,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:05:53,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:05:53,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:05:53,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:05:53,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:05:53,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:05:53,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:05:53,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:05:53,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:05:53,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:05:53,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:05:53,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:05:53,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:05:53,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:05:53,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:05:53,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:05:53,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:05:53,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:05:53,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:05:53,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:05:53,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:05:53,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:05:53,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:05:53,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:05:53,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:05:53,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:05:53,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:05:53,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:05:53,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:05:53,086 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:05:53,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:05:53,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:05:53,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:05:53,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:05:53,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:05:53,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:05:53,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:05:53,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:05:53,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:05:53,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:05:53,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:05:53,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:05:53,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:05:53,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:05:53,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:05:53,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:05:53,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:05:53,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:05:53,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:05:53,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:05:53,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:05:53,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:05:53,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:05:53,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:05:53,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:05:53,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:05:53,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:05:53,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:05:53,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:05:53,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:05:53,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:05:53,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e71540bd3/c777d4115e6340db88f50a87eaf2a87c/FLAG13c1da17e [2020-10-15 04:05:54,117 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:05:54,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:05:54,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e71540bd3/c777d4115e6340db88f50a87eaf2a87c/FLAG13c1da17e [2020-10-15 04:05:54,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e71540bd3/c777d4115e6340db88f50a87eaf2a87c [2020-10-15 04:05:54,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:05:54,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:05:54,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:05:54,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:05:54,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:05:54,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:05:54" (1/1) ... [2020-10-15 04:05:54,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bbc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:54, skipping insertion in model container [2020-10-15 04:05:54,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:05:54" (1/1) ... [2020-10-15 04:05:54,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:05:54,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:05:55,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:05:55,083 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:05:55,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:05:55,262 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:05:55,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55 WrapperNode [2020-10-15 04:05:55,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:05:55,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:05:55,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:05:55,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:05:55,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55" (1/1) ... [2020-10-15 04:05:55,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55" (1/1) ... [2020-10-15 04:05:55,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55" (1/1) ... [2020-10-15 04:05:55,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55" (1/1) ... [2020-10-15 04:05:55,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55" (1/1) ... [2020-10-15 04:05:55,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55" (1/1) ... [2020-10-15 04:05:55,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55" (1/1) ... [2020-10-15 04:05:55,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:05:55,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:05:55,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:05:55,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:05:55,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:05:55,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:05:55,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:05:55,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:05:55,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:05:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:05:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:05:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:05:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:05:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:05:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:05:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:05:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:05:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:05:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:05:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:05:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:05:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:05:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:05:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:05:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:05:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:05:56,720 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:05:56,721 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:05:56,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:05:56 BoogieIcfgContainer [2020-10-15 04:05:56,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:05:56,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:05:56,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:05:56,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:05:56,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:05:54" (1/3) ... [2020-10-15 04:05:56,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62476a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:05:56, skipping insertion in model container [2020-10-15 04:05:56,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:55" (2/3) ... [2020-10-15 04:05:56,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62476a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:05:56, skipping insertion in model container [2020-10-15 04:05:56,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:05:56" (3/3) ... [2020-10-15 04:05:56,736 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:05:56,747 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:05:56,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:05:56,770 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:05:56,797 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:05:56,797 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:05:56,797 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:05:56,798 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:05:56,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:05:56,798 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:05:56,798 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:05:56,798 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:05:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states. [2020-10-15 04:05:56,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-15 04:05:56,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:56,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:56,840 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:56,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:56,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1531384802, now seen corresponding path program 1 times [2020-10-15 04:05:56,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:56,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148783067] [2020-10-15 04:05:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:58,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:59,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:02,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:02,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 04:06:02,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:06:02,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 04:06:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:02,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:06:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 04:06:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 04:06:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:06:02,729 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:02,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:02,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:02,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:02,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:06:02,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:02,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:02,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148783067] [2020-10-15 04:06:02,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:02,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:06:02,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319218300] [2020-10-15 04:06:02,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:06:02,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:02,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:06:02,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:06:02,866 INFO L87 Difference]: Start difference. First operand 349 states. Second operand 4 states. [2020-10-15 04:06:03,142 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 04:06:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:05,003 INFO L93 Difference]: Finished difference Result 691 states and 1194 transitions. [2020-10-15 04:06:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:05,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-15 04:06:05,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:05,026 INFO L225 Difference]: With dead ends: 691 [2020-10-15 04:06:05,026 INFO L226 Difference]: Without dead ends: 561 [2020-10-15 04:06:05,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-15 04:06:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 559. [2020-10-15 04:06:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-15 04:06:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 834 transitions. [2020-10-15 04:06:05,115 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 834 transitions. Word has length 159 [2020-10-15 04:06:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:05,116 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 834 transitions. [2020-10-15 04:06:05,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:06:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 834 transitions. [2020-10-15 04:06:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-15 04:06:05,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:05,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:05,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:06:05,121 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:05,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1269708169, now seen corresponding path program 1 times [2020-10-15 04:06:05,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:05,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983138245] [2020-10-15 04:06:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:05,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:05,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:06,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:10,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:10,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 04:06:10,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:06:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:06:10,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:10,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:06:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 04:06:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 04:06:10,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:10,643 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:10,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:10,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:10,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:10,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:06:10,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:10,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:10,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983138245] [2020-10-15 04:06:10,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:10,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:06:10,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48079419] [2020-10-15 04:06:10,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:06:10,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:10,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:06:10,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:06:10,713 INFO L87 Difference]: Start difference. First operand 559 states and 834 transitions. Second operand 4 states. [2020-10-15 04:06:10,944 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 04:06:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:12,372 INFO L93 Difference]: Finished difference Result 1187 states and 1819 transitions. [2020-10-15 04:06:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:12,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-15 04:06:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:12,382 INFO L225 Difference]: With dead ends: 1187 [2020-10-15 04:06:12,382 INFO L226 Difference]: Without dead ends: 973 [2020-10-15 04:06:12,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:12,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-10-15 04:06:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2020-10-15 04:06:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-10-15 04:06:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1462 transitions. [2020-10-15 04:06:12,456 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1462 transitions. Word has length 159 [2020-10-15 04:06:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:12,458 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1462 transitions. [2020-10-15 04:06:12,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:06:12,458 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1462 transitions. [2020-10-15 04:06:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-15 04:06:12,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:12,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:12,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:06:12,469 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:12,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:12,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1071854982, now seen corresponding path program 1 times [2020-10-15 04:06:12,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:12,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484144196] [2020-10-15 04:06:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:12,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:17,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 04:06:17,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:06:17,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:06:17,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:17,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 04:06:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:18,034 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:18,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:18,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:18,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:18,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:06:18,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:18,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:18,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:18,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484144196] [2020-10-15 04:06:18,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:18,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:18,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788324619] [2020-10-15 04:06:18,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:18,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:18,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:18,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:18,176 INFO L87 Difference]: Start difference. First operand 971 states and 1462 transitions. Second operand 5 states. [2020-10-15 04:06:20,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:20,882 INFO L93 Difference]: Finished difference Result 2832 states and 4255 transitions. [2020-10-15 04:06:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:20,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-15 04:06:20,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:20,897 INFO L225 Difference]: With dead ends: 2832 [2020-10-15 04:06:20,897 INFO L226 Difference]: Without dead ends: 1872 [2020-10-15 04:06:20,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2020-10-15 04:06:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1870. [2020-10-15 04:06:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2020-10-15 04:06:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2786 transitions. [2020-10-15 04:06:21,020 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2786 transitions. Word has length 159 [2020-10-15 04:06:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:21,021 INFO L479 AbstractCegarLoop]: Abstraction has 1870 states and 2786 transitions. [2020-10-15 04:06:21,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2786 transitions. [2020-10-15 04:06:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-15 04:06:21,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:21,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:21,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:06:21,038 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:21,041 INFO L82 PathProgramCache]: Analyzing trace with hash 259936683, now seen corresponding path program 1 times [2020-10-15 04:06:21,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:21,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692824928] [2020-10-15 04:06:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:26,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:26,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-15 04:06:26,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:06:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:06:26,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:26,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-15 04:06:26,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:26,514 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:26,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:26,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:26,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:26,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 04:06:26,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:26,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:06:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:26,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692824928] [2020-10-15 04:06:26,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:26,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:26,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801198501] [2020-10-15 04:06:26,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:26,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:26,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:26,658 INFO L87 Difference]: Start difference. First operand 1870 states and 2786 transitions. Second operand 5 states. [2020-10-15 04:06:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:29,611 INFO L93 Difference]: Finished difference Result 5438 states and 8078 transitions. [2020-10-15 04:06:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:29,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-15 04:06:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:29,632 INFO L225 Difference]: With dead ends: 5438 [2020-10-15 04:06:29,632 INFO L226 Difference]: Without dead ends: 3607 [2020-10-15 04:06:29,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2020-10-15 04:06:29,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3605. [2020-10-15 04:06:29,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3605 states. [2020-10-15 04:06:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 5315 transitions. [2020-10-15 04:06:29,847 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 5315 transitions. Word has length 160 [2020-10-15 04:06:29,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:29,848 INFO L479 AbstractCegarLoop]: Abstraction has 3605 states and 5315 transitions. [2020-10-15 04:06:29,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 5315 transitions. [2020-10-15 04:06:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-15 04:06:29,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:29,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:29,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:06:29,855 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash -689363079, now seen corresponding path program 1 times [2020-10-15 04:06:29,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:29,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017140876] [2020-10-15 04:06:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:29,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:29,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:29,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:30,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:30,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:33,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:34,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:34,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-15 04:06:34,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:06:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:06:34,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:34,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 04:06:34,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:35,228 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:35,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:35,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:35,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:35,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:35,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:06:35,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:35,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:35,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:35,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017140876] [2020-10-15 04:06:35,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:35,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:35,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135707218] [2020-10-15 04:06:35,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:35,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:35,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:35,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:35,318 INFO L87 Difference]: Start difference. First operand 3605 states and 5315 transitions. Second operand 5 states. [2020-10-15 04:06:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:38,545 INFO L93 Difference]: Finished difference Result 10545 states and 15500 transitions. [2020-10-15 04:06:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:38,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-15 04:06:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:38,578 INFO L225 Difference]: With dead ends: 10545 [2020-10-15 04:06:38,578 INFO L226 Difference]: Without dead ends: 6974 [2020-10-15 04:06:38,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:38,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6974 states. [2020-10-15 04:06:38,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6974 to 6972. [2020-10-15 04:06:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6972 states. [2020-10-15 04:06:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 10160 transitions. [2020-10-15 04:06:38,980 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 10160 transitions. Word has length 161 [2020-10-15 04:06:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:38,981 INFO L479 AbstractCegarLoop]: Abstraction has 6972 states and 10160 transitions. [2020-10-15 04:06:38,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:38,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 10160 transitions. [2020-10-15 04:06:38,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-15 04:06:38,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:38,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:38,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:06:38,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:38,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:38,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1988568843, now seen corresponding path program 1 times [2020-10-15 04:06:38,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:38,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825004716] [2020-10-15 04:06:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:39,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:39,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:39,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:39,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:41,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:44,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:44,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-15 04:06:44,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:06:44,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:06:44,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:44,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:44,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 04:06:44,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:44,457 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:44,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:44,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:44,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:44,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:06:44,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:44,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:44,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825004716] [2020-10-15 04:06:44,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:44,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:44,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508229682] [2020-10-15 04:06:44,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:44,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:44,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:44,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:44,582 INFO L87 Difference]: Start difference. First operand 6972 states and 10160 transitions. Second operand 5 states. [2020-10-15 04:06:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:48,193 INFO L93 Difference]: Finished difference Result 19804 states and 28860 transitions. [2020-10-15 04:06:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:48,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-15 04:06:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:48,248 INFO L225 Difference]: With dead ends: 19804 [2020-10-15 04:06:48,248 INFO L226 Difference]: Without dead ends: 13458 [2020-10-15 04:06:48,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:48,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13458 states. [2020-10-15 04:06:48,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13458 to 13456. [2020-10-15 04:06:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13456 states. [2020-10-15 04:06:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13456 states to 13456 states and 19370 transitions. [2020-10-15 04:06:48,958 INFO L78 Accepts]: Start accepts. Automaton has 13456 states and 19370 transitions. Word has length 162 [2020-10-15 04:06:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:48,958 INFO L479 AbstractCegarLoop]: Abstraction has 13456 states and 19370 transitions. [2020-10-15 04:06:48,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 13456 states and 19370 transitions. [2020-10-15 04:06:48,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-15 04:06:48,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:48,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:48,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:06:48,978 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:48,979 INFO L82 PathProgramCache]: Analyzing trace with hash 687976215, now seen corresponding path program 1 times [2020-10-15 04:06:48,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:48,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373577258] [2020-10-15 04:06:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:49,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:49,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:49,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:52,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:54,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-15 04:06:54,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:06:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:06:54,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:54,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 04:06:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:54,400 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:54,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:54,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:54,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:54,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:06:54,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:54,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:54,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373577258] [2020-10-15 04:06:54,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:54,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:54,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514131502] [2020-10-15 04:06:54,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:54,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:54,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:54,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:54,539 INFO L87 Difference]: Start difference. First operand 13456 states and 19370 transitions. Second operand 5 states. [2020-10-15 04:06:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:58,155 INFO L93 Difference]: Finished difference Result 36533 states and 52286 transitions. [2020-10-15 04:06:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:58,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-15 04:06:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:58,208 INFO L225 Difference]: With dead ends: 36533 [2020-10-15 04:06:58,208 INFO L226 Difference]: Without dead ends: 23243 [2020-10-15 04:06:58,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:58,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23243 states. [2020-10-15 04:07:00,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23243 to 23241. [2020-10-15 04:07:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23241 states. [2020-10-15 04:07:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23241 states to 23241 states and 32864 transitions. [2020-10-15 04:07:00,089 INFO L78 Accepts]: Start accepts. Automaton has 23241 states and 32864 transitions. Word has length 163 [2020-10-15 04:07:00,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:00,089 INFO L479 AbstractCegarLoop]: Abstraction has 23241 states and 32864 transitions. [2020-10-15 04:07:00,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:00,089 INFO L276 IsEmpty]: Start isEmpty. Operand 23241 states and 32864 transitions. [2020-10-15 04:07:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 04:07:00,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:00,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:00,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:07:00,126 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:00,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:00,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1495220906, now seen corresponding path program 1 times [2020-10-15 04:07:00,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:00,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205681457] [2020-10-15 04:07:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:00,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:00,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:01,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:05,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:05,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 04:07:05,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:07:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:07:05,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:05,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-15 04:07:05,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:05,515 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:07:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:05,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:05,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:05,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:07:05,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:05,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:07:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:05,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205681457] [2020-10-15 04:07:05,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:05,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:05,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415382577] [2020-10-15 04:07:05,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:05,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:05,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:05,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:05,622 INFO L87 Difference]: Start difference. First operand 23241 states and 32864 transitions. Second operand 5 states. [2020-10-15 04:07:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:10,411 INFO L93 Difference]: Finished difference Result 61629 states and 86988 transitions. [2020-10-15 04:07:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:10,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-15 04:07:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:10,475 INFO L225 Difference]: With dead ends: 61629 [2020-10-15 04:07:10,476 INFO L226 Difference]: Without dead ends: 40359 [2020-10-15 04:07:10,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:10,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40359 states. [2020-10-15 04:07:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40359 to 40357. [2020-10-15 04:07:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40357 states. [2020-10-15 04:07:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40357 states to 40357 states and 55986 transitions. [2020-10-15 04:07:12,571 INFO L78 Accepts]: Start accepts. Automaton has 40357 states and 55986 transitions. Word has length 164 [2020-10-15 04:07:12,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:12,571 INFO L479 AbstractCegarLoop]: Abstraction has 40357 states and 55986 transitions. [2020-10-15 04:07:12,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 40357 states and 55986 transitions. [2020-10-15 04:07:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-15 04:07:12,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:12,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:12,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:07:12,618 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:12,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:12,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1325042409, now seen corresponding path program 1 times [2020-10-15 04:07:12,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:12,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735029465] [2020-10-15 04:07:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:12,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:17,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:17,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-15 04:07:17,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:07:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:07:17,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:17,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 04:07:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 04:07:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:17,953 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:07:17,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:17,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:17,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:17,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:17,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:07:17,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:17,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:17,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:17,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:17,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:17,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:18,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735029465] [2020-10-15 04:07:18,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:18,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:18,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505055294] [2020-10-15 04:07:18,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:18,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:18,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:18,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:18,014 INFO L87 Difference]: Start difference. First operand 40357 states and 55986 transitions. Second operand 5 states. [2020-10-15 04:07:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:20,755 INFO L93 Difference]: Finished difference Result 66904 states and 92768 transitions. [2020-10-15 04:07:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:20,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-15 04:07:20,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:20,802 INFO L225 Difference]: With dead ends: 66904 [2020-10-15 04:07:20,803 INFO L226 Difference]: Without dead ends: 26678 [2020-10-15 04:07:20,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26678 states. [2020-10-15 04:07:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26678 to 26677. [2020-10-15 04:07:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26677 states. [2020-10-15 04:07:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26677 states to 26677 states and 36971 transitions. [2020-10-15 04:07:22,341 INFO L78 Accepts]: Start accepts. Automaton has 26677 states and 36971 transitions. Word has length 165 [2020-10-15 04:07:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:22,341 INFO L479 AbstractCegarLoop]: Abstraction has 26677 states and 36971 transitions. [2020-10-15 04:07:22,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 26677 states and 36971 transitions. [2020-10-15 04:07:22,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-15 04:07:22,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:22,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:22,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:07:22,363 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:22,363 INFO L82 PathProgramCache]: Analyzing trace with hash 169939202, now seen corresponding path program 1 times [2020-10-15 04:07:22,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:22,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827211329] [2020-10-15 04:07:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:27,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:27,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-15 04:07:27,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:07:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:07:27,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:27,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 04:07:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:27,654 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:07:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:27,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:27,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:27,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:27,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:07:27,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:27,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:27,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:27,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827211329] [2020-10-15 04:07:27,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:27,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:27,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003378331] [2020-10-15 04:07:27,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:27,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:27,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:27,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:27,699 INFO L87 Difference]: Start difference. First operand 26677 states and 36971 transitions. Second operand 5 states. [2020-10-15 04:07:27,956 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-15 04:07:31,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:31,974 INFO L93 Difference]: Finished difference Result 47497 states and 65777 transitions. [2020-10-15 04:07:31,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:07:31,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-15 04:07:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:32,009 INFO L225 Difference]: With dead ends: 47497 [2020-10-15 04:07:32,009 INFO L226 Difference]: Without dead ends: 26649 [2020-10-15 04:07:32,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:07:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26649 states. [2020-10-15 04:07:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26649 to 26647. [2020-10-15 04:07:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26647 states. [2020-10-15 04:07:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26647 states to 26647 states and 36787 transitions. [2020-10-15 04:07:33,312 INFO L78 Accepts]: Start accepts. Automaton has 26647 states and 36787 transitions. Word has length 168 [2020-10-15 04:07:33,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:33,312 INFO L479 AbstractCegarLoop]: Abstraction has 26647 states and 36787 transitions. [2020-10-15 04:07:33,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 26647 states and 36787 transitions. [2020-10-15 04:07:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-15 04:07:33,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:33,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:33,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:07:33,326 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:33,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:33,326 INFO L82 PathProgramCache]: Analyzing trace with hash 374997249, now seen corresponding path program 1 times [2020-10-15 04:07:33,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:33,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539577470] [2020-10-15 04:07:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:33,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:33,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:33,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:33,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:38,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-15 04:07:38,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:07:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:07:38,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:38,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:07:38,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:07:38,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 04:07:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:07:38,691 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:07:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:38,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:38,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:38,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 04:07:38,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:38,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:07:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:07:38,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:07:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:38,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539577470] [2020-10-15 04:07:38,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:38,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:07:38,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789841100] [2020-10-15 04:07:38,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:07:38,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:38,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:07:38,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:07:38,779 INFO L87 Difference]: Start difference. First operand 26647 states and 36787 transitions. Second operand 9 states. [2020-10-15 04:07:39,075 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:07:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:45,493 INFO L93 Difference]: Finished difference Result 95214 states and 135603 transitions. [2020-10-15 04:07:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:07:45,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-10-15 04:07:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:45,591 INFO L225 Difference]: With dead ends: 95214 [2020-10-15 04:07:45,591 INFO L226 Difference]: Without dead ends: 71468 [2020-10-15 04:07:45,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:07:45,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71468 states. [2020-10-15 04:07:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71468 to 35095. [2020-10-15 04:07:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35095 states. [2020-10-15 04:07:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35095 states to 35095 states and 48207 transitions. [2020-10-15 04:07:48,132 INFO L78 Accepts]: Start accepts. Automaton has 35095 states and 48207 transitions. Word has length 169 [2020-10-15 04:07:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:48,133 INFO L479 AbstractCegarLoop]: Abstraction has 35095 states and 48207 transitions. [2020-10-15 04:07:48,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:07:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 35095 states and 48207 transitions. [2020-10-15 04:07:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-15 04:07:48,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:48,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:48,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:07:48,163 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:48,164 INFO L82 PathProgramCache]: Analyzing trace with hash 471106760, now seen corresponding path program 1 times [2020-10-15 04:07:48,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:48,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199770214] [2020-10-15 04:07:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:48,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:48,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:48,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:53,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:53,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-15 04:07:53,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:07:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:07:53,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:53,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 04:07:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 04:07:53,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:53,495 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:07:53,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:53,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:53,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:53,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:07:53,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:53,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:53,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199770214] [2020-10-15 04:07:53,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:53,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:53,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560937634] [2020-10-15 04:07:53,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:53,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:53,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:53,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:53,538 INFO L87 Difference]: Start difference. First operand 35095 states and 48207 transitions. Second operand 5 states. [2020-10-15 04:07:56,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:56,556 INFO L93 Difference]: Finished difference Result 60607 states and 83415 transitions. [2020-10-15 04:07:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:56,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-15 04:07:56,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:56,591 INFO L225 Difference]: With dead ends: 60607 [2020-10-15 04:07:56,591 INFO L226 Difference]: Without dead ends: 26092 [2020-10-15 04:07:56,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26092 states. [2020-10-15 04:07:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26092 to 26091. [2020-10-15 04:07:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26091 states. [2020-10-15 04:07:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26091 states to 26091 states and 35847 transitions. [2020-10-15 04:07:58,362 INFO L78 Accepts]: Start accepts. Automaton has 26091 states and 35847 transitions. Word has length 169 [2020-10-15 04:07:58,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:58,362 INFO L479 AbstractCegarLoop]: Abstraction has 26091 states and 35847 transitions. [2020-10-15 04:07:58,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:58,362 INFO L276 IsEmpty]: Start isEmpty. Operand 26091 states and 35847 transitions. [2020-10-15 04:07:58,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-15 04:07:58,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:58,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:58,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:07:58,379 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:58,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:58,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1039511667, now seen corresponding path program 1 times [2020-10-15 04:07:58,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:58,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159070129] [2020-10-15 04:07:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:58,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:03,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:03,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-15 04:08:03,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:08:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:08:03,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:03,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:08:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 04:08:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:03,696 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:08:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:03,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:03,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:03,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:08:03,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:03,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:03,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:08:03,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159070129] [2020-10-15 04:08:03,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:03,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:03,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835658663] [2020-10-15 04:08:03,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:03,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:03,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:03,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:03,749 INFO L87 Difference]: Start difference. First operand 26091 states and 35847 transitions. Second operand 5 states. [2020-10-15 04:08:04,001 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-15 04:08:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:08,169 INFO L93 Difference]: Finished difference Result 45620 states and 62703 transitions. [2020-10-15 04:08:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:08:08,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-15 04:08:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:08,197 INFO L225 Difference]: With dead ends: 45620 [2020-10-15 04:08:08,197 INFO L226 Difference]: Without dead ends: 26093 [2020-10-15 04:08:08,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:08:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26093 states. [2020-10-15 04:08:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26093 to 26091. [2020-10-15 04:08:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26091 states. [2020-10-15 04:08:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26091 states to 26091 states and 35715 transitions. [2020-10-15 04:08:09,736 INFO L78 Accepts]: Start accepts. Automaton has 26091 states and 35715 transitions. Word has length 172 [2020-10-15 04:08:09,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:09,737 INFO L479 AbstractCegarLoop]: Abstraction has 26091 states and 35715 transitions. [2020-10-15 04:08:09,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 26091 states and 35715 transitions. [2020-10-15 04:08:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-15 04:08:09,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:09,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:09,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:08:09,754 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash -22249951, now seen corresponding path program 1 times [2020-10-15 04:08:09,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:09,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869081563] [2020-10-15 04:08:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:09,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:09,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:14,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:14,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 04:08:14,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:08:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:08:14,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:14,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:08:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:08:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 04:08:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:15,132 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:08:15,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:15,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:15,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:15,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:15,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:08:15,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:15,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:08:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:08:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:08:15,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869081563] [2020-10-15 04:08:15,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:15,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:08:15,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239091782] [2020-10-15 04:08:15,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:08:15,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:15,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:08:15,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:08:15,197 INFO L87 Difference]: Start difference. First operand 26091 states and 35715 transitions. Second operand 9 states. [2020-10-15 04:08:15,493 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:08:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:23,049 INFO L93 Difference]: Finished difference Result 98618 states and 139296 transitions. [2020-10-15 04:08:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:08:23,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 173 [2020-10-15 04:08:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:23,122 INFO L225 Difference]: With dead ends: 98618 [2020-10-15 04:08:23,122 INFO L226 Difference]: Without dead ends: 74953 [2020-10-15 04:08:23,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:08:23,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74953 states. [2020-10-15 04:08:27,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74953 to 46768. [2020-10-15 04:08:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46768 states. [2020-10-15 04:08:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46768 states to 46768 states and 63860 transitions. [2020-10-15 04:08:27,680 INFO L78 Accepts]: Start accepts. Automaton has 46768 states and 63860 transitions. Word has length 173 [2020-10-15 04:08:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:27,680 INFO L479 AbstractCegarLoop]: Abstraction has 46768 states and 63860 transitions. [2020-10-15 04:08:27,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:08:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 46768 states and 63860 transitions. [2020-10-15 04:08:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-15 04:08:27,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:27,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:27,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:08:27,698 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:27,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:27,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1925859772, now seen corresponding path program 1 times [2020-10-15 04:08:27,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:27,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274914555] [2020-10-15 04:08:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:27,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:32,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:32,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 04:08:32,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:08:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:08:32,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:32,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 04:08:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 04:08:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:33,006 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:08:33,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:33,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:33,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:33,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:33,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:08:33,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:33,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:08:33,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274914555] [2020-10-15 04:08:33,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:33,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:33,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107538245] [2020-10-15 04:08:33,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:33,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:33,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:33,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:33,055 INFO L87 Difference]: Start difference. First operand 46768 states and 63860 transitions. Second operand 5 states. [2020-10-15 04:08:37,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:37,381 INFO L93 Difference]: Finished difference Result 87449 states and 119488 transitions. [2020-10-15 04:08:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:08:37,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-15 04:08:37,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:37,418 INFO L225 Difference]: With dead ends: 87449 [2020-10-15 04:08:37,418 INFO L226 Difference]: Without dead ends: 41010 [2020-10-15 04:08:37,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:08:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41010 states. [2020-10-15 04:08:40,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41010 to 41010. [2020-10-15 04:08:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41010 states. [2020-10-15 04:08:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41010 states to 41010 states and 55984 transitions. [2020-10-15 04:08:40,448 INFO L78 Accepts]: Start accepts. Automaton has 41010 states and 55984 transitions. Word has length 173 [2020-10-15 04:08:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:40,448 INFO L479 AbstractCegarLoop]: Abstraction has 41010 states and 55984 transitions. [2020-10-15 04:08:40,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 41010 states and 55984 transitions. [2020-10-15 04:08:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-15 04:08:40,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:40,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:40,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:08:40,464 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:40,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:40,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2020276555, now seen corresponding path program 1 times [2020-10-15 04:08:40,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:40,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651304317] [2020-10-15 04:08:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:40,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:40,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:40,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:45,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:45,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-15 04:08:45,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:08:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 04:08:45,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:45,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:08:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:08:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 04:08:45,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:45,834 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:08:45,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:45,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:45,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:45,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:45,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:45,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:08:45,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:45,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:08:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:08:45,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:08:45,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651304317] [2020-10-15 04:08:45,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:45,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:08:45,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549685361] [2020-10-15 04:08:45,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:08:45,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:45,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:08:45,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:08:45,904 INFO L87 Difference]: Start difference. First operand 41010 states and 55984 transitions. Second operand 9 states. [2020-10-15 04:08:46,196 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:09:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:00,699 INFO L93 Difference]: Finished difference Result 177373 states and 248010 transitions. [2020-10-15 04:09:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:09:00,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-10-15 04:09:00,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:00,855 INFO L225 Difference]: With dead ends: 177373 [2020-10-15 04:09:00,855 INFO L226 Difference]: Without dead ends: 137506 [2020-10-15 04:09:00,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:09:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137506 states. [2020-10-15 04:09:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137506 to 68361. [2020-10-15 04:09:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68361 states. [2020-10-15 04:09:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68361 states to 68361 states and 92104 transitions. [2020-10-15 04:09:06,853 INFO L78 Accepts]: Start accepts. Automaton has 68361 states and 92104 transitions. Word has length 175 [2020-10-15 04:09:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:06,853 INFO L479 AbstractCegarLoop]: Abstraction has 68361 states and 92104 transitions. [2020-10-15 04:09:06,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:09:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 68361 states and 92104 transitions. [2020-10-15 04:09:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-15 04:09:06,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:06,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:09:06,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:09:06,876 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:06,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:06,876 INFO L82 PathProgramCache]: Analyzing trace with hash 43091976, now seen corresponding path program 1 times [2020-10-15 04:09:06,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:06,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321636697] [2020-10-15 04:09:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:06,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:06,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:11,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:11,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-15 04:09:11,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:09:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4585 [2020-10-15 04:09:11,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:11,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-15 04:09:11,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 04:09:11,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:11,750 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:09:11,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:11,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:11,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:11,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:09:11,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:11,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:11,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321636697] [2020-10-15 04:09:11,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:11,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:11,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962524480] [2020-10-15 04:09:11,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:11,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:11,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:11,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:11,785 INFO L87 Difference]: Start difference. First operand 68361 states and 92104 transitions. Second operand 5 states. [2020-10-15 04:09:17,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:17,771 INFO L93 Difference]: Finished difference Result 113238 states and 152504 transitions. [2020-10-15 04:09:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:17,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-15 04:09:17,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:17,840 INFO L225 Difference]: With dead ends: 113238 [2020-10-15 04:09:17,840 INFO L226 Difference]: Without dead ends: 57532 [2020-10-15 04:09:17,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57532 states. [2020-10-15 04:09:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57532 to 57529. [2020-10-15 04:09:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57529 states. [2020-10-15 04:09:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57529 states to 57529 states and 77298 transitions. [2020-10-15 04:09:22,797 INFO L78 Accepts]: Start accepts. Automaton has 57529 states and 77298 transitions. Word has length 175 [2020-10-15 04:09:22,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:22,797 INFO L479 AbstractCegarLoop]: Abstraction has 57529 states and 77298 transitions. [2020-10-15 04:09:22,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 57529 states and 77298 transitions. [2020-10-15 04:09:22,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-15 04:09:22,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:22,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:09:22,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:09:22,816 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:22,817 INFO L82 PathProgramCache]: Analyzing trace with hash 877466254, now seen corresponding path program 1 times [2020-10-15 04:09:22,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:22,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708093883] [2020-10-15 04:09:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:22,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:22,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:22,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:23,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:26,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:27,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:27,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:27,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-15 04:09:27,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:09:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:09:27,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:27,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:09:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:09:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-15 04:09:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:28,199 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:09:28,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:28,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:28,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:28,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:28,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:09:28,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:28,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:09:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:09:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:28,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708093883] [2020-10-15 04:09:28,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:28,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:09:28,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366384152] [2020-10-15 04:09:28,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 04:09:28,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:28,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 04:09:28,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 04:09:28,265 INFO L87 Difference]: Start difference. First operand 57529 states and 77298 transitions. Second operand 10 states. [2020-10-15 04:09:28,569 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 181