/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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:02:54,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:02:54,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:02:54,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:02:54,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:02:54,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:02:54,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:02:54,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:02:54,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:02:54,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:02:54,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:02:54,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:02:54,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:02:54,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:02:54,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:02:54,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:02:54,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:02:54,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:02:54,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:02:54,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:02:54,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:02:54,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:02:54,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:02:54,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:02:54,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:02:54,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:02:54,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:02:54,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:02:54,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:02:54,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:02:54,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:02:54,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:02:54,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:02:54,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:02:54,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:02:54,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:02:54,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:02:54,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:02:54,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:02:54,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:02:54,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:02:54,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:02:54,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:02:54,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:02:54,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:02:54,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:02:54,430 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:02:54,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:02:54,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:02:54,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:02:54,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:02:54,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:02:54,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:02:54,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:02:54,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:02:54,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:02:54,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:02:54,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:02:54,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:02:54,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:02:54,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:02:54,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:02:54,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:02:54,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:02:54,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:02:54,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:02:54,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:02:54,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:02:54,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:02:54,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:02:54,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:02:54,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:02:54,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:02:54,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:02:54,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:02:54,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:02:54,866 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:02:54,867 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:02:54,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54cdf8000/f84702f3b4874869b7eb83e24d4ddacd/FLAG0dca2c8d4 [2020-10-15 03:02:55,580 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:02:55,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:02:55,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54cdf8000/f84702f3b4874869b7eb83e24d4ddacd/FLAG0dca2c8d4 [2020-10-15 03:02:55,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54cdf8000/f84702f3b4874869b7eb83e24d4ddacd [2020-10-15 03:02:55,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:02:55,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:02:55,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:02:55,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:02:55,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:02:55,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:55" (1/1) ... [2020-10-15 03:02:55,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5d3184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:55, skipping insertion in model container [2020-10-15 03:02:55,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:55" (1/1) ... [2020-10-15 03:02:55,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:02:55,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:02:56,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:02:56,667 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:02:57,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:02:57,261 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:02:57,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57 WrapperNode [2020-10-15 03:02:57,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:02:57,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:02:57,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:02:57,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:02:57,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57" (1/1) ... [2020-10-15 03:02:57,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57" (1/1) ... [2020-10-15 03:02:57,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57" (1/1) ... [2020-10-15 03:02:57,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57" (1/1) ... [2020-10-15 03:02:57,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57" (1/1) ... [2020-10-15 03:02:57,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57" (1/1) ... [2020-10-15 03:02:57,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57" (1/1) ... [2020-10-15 03:02:57,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:02:57,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:02:57,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:02:57,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:02:57,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:02:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:02:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:02:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:02:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:02:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:02:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:02:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:02:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:02:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:02:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:02:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:02:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:02:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:02:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:02:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:02:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:02:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:02:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:02:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:02:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:02:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:02:59,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:02:59,506 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:02:59,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:59 BoogieIcfgContainer [2020-10-15 03:02:59,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:02:59,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:02:59,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:02:59,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:02:59,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:02:55" (1/3) ... [2020-10-15 03:02:59,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522e09ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:59, skipping insertion in model container [2020-10-15 03:02:59,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:57" (2/3) ... [2020-10-15 03:02:59,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522e09ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:59, skipping insertion in model container [2020-10-15 03:02:59,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:59" (3/3) ... [2020-10-15 03:02:59,526 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:02:59,537 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:02:59,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:02:59,563 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:02:59,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:02:59,620 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:02:59,620 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:02:59,620 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:02:59,620 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:02:59,620 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:02:59,621 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:02:59,621 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:02:59,654 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states. [2020-10-15 03:02:59,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-15 03:02:59,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:02:59,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:02:59,680 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:02:59,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:02:59,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1878018170, now seen corresponding path program 1 times [2020-10-15 03:02:59,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:02:59,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692960218] [2020-10-15 03:02:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:01,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:02,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:02,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:05,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:05,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-15 03:03:05,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:03:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-15 03:03:05,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:05,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:05,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-15 03:03:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:03:06,677 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:03:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:06,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:06,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:06,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:06,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:03:06,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:06,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:06,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692960218] [2020-10-15 03:03:06,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:06,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:06,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402299305] [2020-10-15 03:03:06,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:06,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:06,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:06,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:06,937 INFO L87 Difference]: Start difference. First operand 586 states. Second operand 5 states. [2020-10-15 03:03:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:14,027 INFO L93 Difference]: Finished difference Result 1716 states and 3061 transitions. [2020-10-15 03:03:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:03:14,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-15 03:03:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:14,075 INFO L225 Difference]: With dead ends: 1716 [2020-10-15 03:03:14,076 INFO L226 Difference]: Without dead ends: 1135 [2020-10-15 03:03:14,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:03:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2020-10-15 03:03:14,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1133. [2020-10-15 03:03:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-10-15 03:03:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1767 transitions. [2020-10-15 03:03:14,227 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1767 transitions. Word has length 238 [2020-10-15 03:03:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:14,228 INFO L479 AbstractCegarLoop]: Abstraction has 1133 states and 1767 transitions. [2020-10-15 03:03:14,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1767 transitions. [2020-10-15 03:03:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-15 03:03:14,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:14,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:03:14,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:03:14,241 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1570878624, now seen corresponding path program 1 times [2020-10-15 03:03:14,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:14,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986798966] [2020-10-15 03:03:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:14,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:14,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:15,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:15,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:16,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:16,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:17,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:19,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:19,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-15 03:03:19,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:03:19,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-15 03:03:19,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:19,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:03:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:03:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-15 03:03:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:19,937 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:03:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:19,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:03:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:19,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:20,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986798966] [2020-10-15 03:03:20,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:20,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:03:20,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185670231] [2020-10-15 03:03:20,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:03:20,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:20,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:03:20,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:03:20,166 INFO L87 Difference]: Start difference. First operand 1133 states and 1767 transitions. Second operand 4 states. [2020-10-15 03:03:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:26,817 INFO L93 Difference]: Finished difference Result 3203 states and 4964 transitions. [2020-10-15 03:03:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:03:26,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-15 03:03:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:26,835 INFO L225 Difference]: With dead ends: 3203 [2020-10-15 03:03:26,835 INFO L226 Difference]: Without dead ends: 2210 [2020-10-15 03:03:26,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:03:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2020-10-15 03:03:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 2208. [2020-10-15 03:03:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2208 states. [2020-10-15 03:03:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3426 transitions. [2020-10-15 03:03:26,986 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3426 transitions. Word has length 240 [2020-10-15 03:03:26,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:26,986 INFO L479 AbstractCegarLoop]: Abstraction has 2208 states and 3426 transitions. [2020-10-15 03:03:26,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:03:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3426 transitions. [2020-10-15 03:03:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-15 03:03:26,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:26,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:03:26,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:03:26,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:26,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:26,996 INFO L82 PathProgramCache]: Analyzing trace with hash -546003163, now seen corresponding path program 1 times [2020-10-15 03:03:26,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:26,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924636637] [2020-10-15 03:03:26,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:28,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:28,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:28,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:29,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:29,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:29,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:32,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-15 03:03:32,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:03:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-15 03:03:32,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:32,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 03:03:32,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:32,914 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:03:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:32,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:32,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:32,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:32,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 03:03:32,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:32,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:32,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:33,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924636637] [2020-10-15 03:03:33,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:33,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:33,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188636036] [2020-10-15 03:03:33,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:33,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:33,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:33,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:33,185 INFO L87 Difference]: Start difference. First operand 2208 states and 3426 transitions. Second operand 5 states. [2020-10-15 03:03:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:39,004 INFO L93 Difference]: Finished difference Result 6344 states and 9790 transitions. [2020-10-15 03:03:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:03:39,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-10-15 03:03:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:39,031 INFO L225 Difference]: With dead ends: 6344 [2020-10-15 03:03:39,031 INFO L226 Difference]: Without dead ends: 4258 [2020-10-15 03:03:39,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:03:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2020-10-15 03:03:39,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 4256. [2020-10-15 03:03:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4256 states. [2020-10-15 03:03:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 6532 transitions. [2020-10-15 03:03:39,233 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 6532 transitions. Word has length 240 [2020-10-15 03:03:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:39,234 INFO L479 AbstractCegarLoop]: Abstraction has 4256 states and 6532 transitions. [2020-10-15 03:03:39,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:03:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 6532 transitions. [2020-10-15 03:03:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-15 03:03:39,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:39,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:03:39,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:03:39,245 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:39,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:39,246 INFO L82 PathProgramCache]: Analyzing trace with hash 362746806, now seen corresponding path program 1 times [2020-10-15 03:03:39,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:39,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096799093] [2020-10-15 03:03:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:40,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:40,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:44,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:44,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-15 03:03:44,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:03:44,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 03:03:44,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:44,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:03:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 03:03:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-15 03:03:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:03:44,800 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:03:44,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:44,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:44,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:44,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:44,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:03:44,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:44,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:44,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:44,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:03:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:45,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096799093] [2020-10-15 03:03:45,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:45,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:03:45,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840564650] [2020-10-15 03:03:45,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:03:45,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:45,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:03:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:03:45,046 INFO L87 Difference]: Start difference. First operand 4256 states and 6532 transitions. Second operand 4 states. [2020-10-15 03:03:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:03:50,977 INFO L93 Difference]: Finished difference Result 12090 states and 18436 transitions. [2020-10-15 03:03:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:03:50,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-10-15 03:03:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:03:51,012 INFO L225 Difference]: With dead ends: 12090 [2020-10-15 03:03:51,012 INFO L226 Difference]: Without dead ends: 8236 [2020-10-15 03:03:51,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:03:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8236 states. [2020-10-15 03:03:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8236 to 8234. [2020-10-15 03:03:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8234 states. [2020-10-15 03:03:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8234 states to 8234 states and 12532 transitions. [2020-10-15 03:03:51,383 INFO L78 Accepts]: Start accepts. Automaton has 8234 states and 12532 transitions. Word has length 242 [2020-10-15 03:03:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:03:51,383 INFO L479 AbstractCegarLoop]: Abstraction has 8234 states and 12532 transitions. [2020-10-15 03:03:51,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:03:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8234 states and 12532 transitions. [2020-10-15 03:03:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-15 03:03:51,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:03:51,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:03:51,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:03:51,410 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:03:51,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:03:51,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1749769477, now seen corresponding path program 1 times [2020-10-15 03:03:51,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:03:51,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392126624] [2020-10-15 03:03:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:03:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:51,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:51,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:51,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:52,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:53,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:53,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:56,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-15 03:03:56,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:03:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:03:56,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:56,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:03:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:03:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 03:03:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:57,057 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:03:57,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:03:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:03:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:03:57,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:03:57,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:03:57,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:03:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:03:57,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:03:57,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:03:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:03:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:03:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:03:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:03:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:03:57,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392126624] [2020-10-15 03:03:57,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:03:57,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:03:57,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466355451] [2020-10-15 03:03:57,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:03:57,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:03:57,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:03:57,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:03:57,215 INFO L87 Difference]: Start difference. First operand 8234 states and 12532 transitions. Second operand 5 states. [2020-10-15 03:04:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:03,673 INFO L93 Difference]: Finished difference Result 23975 states and 36363 transitions. [2020-10-15 03:04:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:03,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-15 03:04:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:03,747 INFO L225 Difference]: With dead ends: 23975 [2020-10-15 03:04:03,747 INFO L226 Difference]: Without dead ends: 16128 [2020-10-15 03:04:03,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16128 states. [2020-10-15 03:04:04,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16128 to 16126. [2020-10-15 03:04:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16126 states. [2020-10-15 03:04:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16126 states to 16126 states and 24368 transitions. [2020-10-15 03:04:04,580 INFO L78 Accepts]: Start accepts. Automaton has 16126 states and 24368 transitions. Word has length 242 [2020-10-15 03:04:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:04,580 INFO L479 AbstractCegarLoop]: Abstraction has 16126 states and 24368 transitions. [2020-10-15 03:04:04,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:04,580 INFO L276 IsEmpty]: Start isEmpty. Operand 16126 states and 24368 transitions. [2020-10-15 03:04:04,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-15 03:04:04,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:04,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:04,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:04:04,614 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:04,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:04,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1959286472, now seen corresponding path program 1 times [2020-10-15 03:04:04,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:04,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325122484] [2020-10-15 03:04:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:04,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:04,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:04,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:06,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:09,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:09,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-15 03:04:09,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:04:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 03:04:09,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:09,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 03:04:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:10,290 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:04:10,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:10,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:10,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:10,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-15 03:04:10,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:10,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:10,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:04:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:10,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325122484] [2020-10-15 03:04:10,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:10,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:10,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651378934] [2020-10-15 03:04:10,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:10,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:10,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:10,463 INFO L87 Difference]: Start difference. First operand 16126 states and 24368 transitions. Second operand 5 states. [2020-10-15 03:04:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:17,708 INFO L93 Difference]: Finished difference Result 34735 states and 52474 transitions. [2020-10-15 03:04:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:17,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-15 03:04:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:17,767 INFO L225 Difference]: With dead ends: 34735 [2020-10-15 03:04:17,767 INFO L226 Difference]: Without dead ends: 18713 [2020-10-15 03:04:17,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18713 states. [2020-10-15 03:04:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18713 to 16107. [2020-10-15 03:04:18,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16107 states. [2020-10-15 03:04:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16107 states to 16107 states and 24320 transitions. [2020-10-15 03:04:18,686 INFO L78 Accepts]: Start accepts. Automaton has 16107 states and 24320 transitions. Word has length 244 [2020-10-15 03:04:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:18,686 INFO L479 AbstractCegarLoop]: Abstraction has 16107 states and 24320 transitions. [2020-10-15 03:04:18,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:18,686 INFO L276 IsEmpty]: Start isEmpty. Operand 16107 states and 24320 transitions. [2020-10-15 03:04:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-15 03:04:18,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:18,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:18,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:04:18,713 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash -226071894, now seen corresponding path program 1 times [2020-10-15 03:04:18,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:18,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80746761] [2020-10-15 03:04:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:18,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:19,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:23,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:23,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-15 03:04:23,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:04:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 03:04:23,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:23,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-15 03:04:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:24,544 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:04:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:24,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:24,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:24,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:04:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:24,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:24,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80746761] [2020-10-15 03:04:24,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:24,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:24,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791653320] [2020-10-15 03:04:24,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:24,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:24,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:24,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:24,672 INFO L87 Difference]: Start difference. First operand 16107 states and 24320 transitions. Second operand 5 states. [2020-10-15 03:04:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:31,460 INFO L93 Difference]: Finished difference Result 46963 states and 70649 transitions. [2020-10-15 03:04:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:31,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-15 03:04:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:31,527 INFO L225 Difference]: With dead ends: 46963 [2020-10-15 03:04:31,527 INFO L226 Difference]: Without dead ends: 31425 [2020-10-15 03:04:31,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31425 states. [2020-10-15 03:04:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31425 to 31423. [2020-10-15 03:04:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31423 states. [2020-10-15 03:04:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31423 states to 31423 states and 46935 transitions. [2020-10-15 03:04:33,233 INFO L78 Accepts]: Start accepts. Automaton has 31423 states and 46935 transitions. Word has length 246 [2020-10-15 03:04:33,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:33,233 INFO L479 AbstractCegarLoop]: Abstraction has 31423 states and 46935 transitions. [2020-10-15 03:04:33,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 31423 states and 46935 transitions. [2020-10-15 03:04:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-15 03:04:33,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:33,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:33,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:04:33,274 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:33,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:33,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1092649352, now seen corresponding path program 1 times [2020-10-15 03:04:33,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:33,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917641173] [2020-10-15 03:04:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:33,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:38,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:38,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-15 03:04:38,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:04:38,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:04:38,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:38,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 03:04:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 03:04:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:38,899 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:04:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:38,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:38,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:38,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:04:38,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:38,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:38,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:38,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:38,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917641173] [2020-10-15 03:04:38,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:38,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:38,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080176769] [2020-10-15 03:04:38,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:38,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:38,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:38,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:38,999 INFO L87 Difference]: Start difference. First operand 31423 states and 46935 transitions. Second operand 5 states. [2020-10-15 03:04:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:04:49,249 INFO L93 Difference]: Finished difference Result 87163 states and 128805 transitions. [2020-10-15 03:04:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:04:49,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-15 03:04:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:04:49,376 INFO L225 Difference]: With dead ends: 87163 [2020-10-15 03:04:49,377 INFO L226 Difference]: Without dead ends: 60473 [2020-10-15 03:04:49,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:04:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60473 states. [2020-10-15 03:04:51,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60473 to 34359. [2020-10-15 03:04:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34359 states. [2020-10-15 03:04:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34359 states to 34359 states and 51779 transitions. [2020-10-15 03:04:51,691 INFO L78 Accepts]: Start accepts. Automaton has 34359 states and 51779 transitions. Word has length 248 [2020-10-15 03:04:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:04:51,691 INFO L479 AbstractCegarLoop]: Abstraction has 34359 states and 51779 transitions. [2020-10-15 03:04:51,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:04:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 34359 states and 51779 transitions. [2020-10-15 03:04:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-15 03:04:51,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:04:51,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:04:51,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:04:51,726 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:04:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:04:51,726 INFO L82 PathProgramCache]: Analyzing trace with hash -312004210, now seen corresponding path program 1 times [2020-10-15 03:04:51,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:04:51,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362910820] [2020-10-15 03:04:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:04:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:51,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:53,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:55,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:55,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:56,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:56,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:56,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-15 03:04:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:04:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:04:56,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:56,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:04:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:04:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 03:04:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:57,335 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:04:57,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:04:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:04:57,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:04:57,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:04:57,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:04:57,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:04:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:04:57,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:04:57,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:04:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:04:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:04:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:04:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:04:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:04:57,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362910820] [2020-10-15 03:04:57,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:04:57,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:04:57,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113966034] [2020-10-15 03:04:57,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:04:57,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:04:57,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:04:57,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:04:57,477 INFO L87 Difference]: Start difference. First operand 34359 states and 51779 transitions. Second operand 5 states. [2020-10-15 03:05:08,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:08,541 INFO L93 Difference]: Finished difference Result 98235 states and 147259 transitions. [2020-10-15 03:05:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:08,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-15 03:05:08,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:08,638 INFO L225 Difference]: With dead ends: 98235 [2020-10-15 03:05:08,638 INFO L226 Difference]: Without dead ends: 66377 [2020-10-15 03:05:08,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:05:08,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66377 states. [2020-10-15 03:05:14,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66377 to 66375. [2020-10-15 03:05:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66375 states. [2020-10-15 03:05:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66375 states to 66375 states and 99039 transitions. [2020-10-15 03:05:14,314 INFO L78 Accepts]: Start accepts. Automaton has 66375 states and 99039 transitions. Word has length 249 [2020-10-15 03:05:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:14,315 INFO L479 AbstractCegarLoop]: Abstraction has 66375 states and 99039 transitions. [2020-10-15 03:05:14,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 66375 states and 99039 transitions. [2020-10-15 03:05:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-15 03:05:14,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:14,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:05:14,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:05:14,391 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:14,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:14,392 INFO L82 PathProgramCache]: Analyzing trace with hash -136471490, now seen corresponding path program 1 times [2020-10-15 03:05:14,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:14,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570281651] [2020-10-15 03:05:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:14,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:19,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-15 03:05:19,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:05:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 03:05:19,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:19,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:19,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-15 03:05:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:05:19,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:19,976 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:05:19,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:19,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:19,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:19,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:19,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:05:19,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:19,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:20,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570281651] [2020-10-15 03:05:20,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:20,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:20,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844908529] [2020-10-15 03:05:20,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:20,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:20,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:20,061 INFO L87 Difference]: Start difference. First operand 66375 states and 99039 transitions. Second operand 5 states. [2020-10-15 03:05:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:29,061 INFO L93 Difference]: Finished difference Result 117129 states and 171936 transitions. [2020-10-15 03:05:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:29,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-15 03:05:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:29,146 INFO L225 Difference]: With dead ends: 117129 [2020-10-15 03:05:29,146 INFO L226 Difference]: Without dead ends: 66375 [2020-10-15 03:05:29,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:05:29,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66375 states. [2020-10-15 03:05:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66375 to 66375. [2020-10-15 03:05:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66375 states. [2020-10-15 03:05:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66375 states to 66375 states and 98783 transitions. [2020-10-15 03:05:33,552 INFO L78 Accepts]: Start accepts. Automaton has 66375 states and 98783 transitions. Word has length 252 [2020-10-15 03:05:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:33,553 INFO L479 AbstractCegarLoop]: Abstraction has 66375 states and 98783 transitions. [2020-10-15 03:05:33,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 66375 states and 98783 transitions. [2020-10-15 03:05:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-15 03:05:33,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:33,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:05:33,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:05:33,632 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:33,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1244977946, now seen corresponding path program 1 times [2020-10-15 03:05:33,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:33,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262510857] [2020-10-15 03:05:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:33,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:33,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:33,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:34,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:38,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:38,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-15 03:05:38,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:05:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 03:05:38,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:38,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 03:05:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:05:40,546 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:05:40,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:40,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:40,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:40,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:05:40,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:40,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:40,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:05:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:40,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262510857] [2020-10-15 03:05:40,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:40,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:40,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347375567] [2020-10-15 03:05:40,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:40,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:40,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:40,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:40,661 INFO L87 Difference]: Start difference. First operand 66375 states and 98783 transitions. Second operand 5 states. [2020-10-15 03:05:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:56,050 INFO L93 Difference]: Finished difference Result 191081 states and 283180 transitions. [2020-10-15 03:05:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:05:56,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-15 03:05:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:56,207 INFO L225 Difference]: With dead ends: 191081 [2020-10-15 03:05:56,207 INFO L226 Difference]: Without dead ends: 126471 [2020-10-15 03:05:56,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:05:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126471 states. [2020-10-15 03:06:06,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126471 to 126469. [2020-10-15 03:06:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126469 states. [2020-10-15 03:06:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126469 states to 126469 states and 185968 transitions. [2020-10-15 03:06:06,394 INFO L78 Accepts]: Start accepts. Automaton has 126469 states and 185968 transitions. Word has length 253 [2020-10-15 03:06:06,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:06,395 INFO L479 AbstractCegarLoop]: Abstraction has 126469 states and 185968 transitions. [2020-10-15 03:06:06,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:06,395 INFO L276 IsEmpty]: Start isEmpty. Operand 126469 states and 185968 transitions. [2020-10-15 03:06:08,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-15 03:06:08,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:08,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:08,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:06:08,435 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:08,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:08,435 INFO L82 PathProgramCache]: Analyzing trace with hash -801118608, now seen corresponding path program 1 times [2020-10-15 03:06:08,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:08,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317373610] [2020-10-15 03:06:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:11,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:13,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-15 03:06:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:06:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:06:13,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:13,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:06:13,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 03:06:13,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 03:06:13,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:06:14,040 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:06:14,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:14,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:14,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:14,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:14,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:14,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:06:14,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:14,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:14,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:14,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:14,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:06:14,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317373610] [2020-10-15 03:06:14,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:14,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:06:14,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355796597] [2020-10-15 03:06:14,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:06:14,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:14,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:06:14,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:06:14,134 INFO L87 Difference]: Start difference. First operand 126469 states and 185968 transitions. Second operand 4 states. [2020-10-15 03:06:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:40,543 INFO L93 Difference]: Finished difference Result 358377 states and 522970 transitions. [2020-10-15 03:06:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:06:40,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 255 [2020-10-15 03:06:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:40,922 INFO L225 Difference]: With dead ends: 358377 [2020-10-15 03:06:40,923 INFO L226 Difference]: Without dead ends: 246559 [2020-10-15 03:06:41,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:06:41,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246559 states.