/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.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:11:16,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:11:16,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:11:16,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:11:16,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:11:16,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:11:16,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:11:16,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:11:16,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:11:16,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:11:16,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:11:16,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:11:16,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:11:16,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:11:16,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:11:16,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:11:16,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:11:16,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:11:16,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:11:16,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:11:16,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:11:16,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:11:16,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:11:16,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:11:16,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:11:16,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:11:16,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:11:16,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:11:16,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:11:16,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:11:16,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:11:16,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:11:16,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:11:16,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:11:16,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:11:16,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:11:16,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:11:16,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:11:16,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:11:16,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:11:16,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:11:16,553 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 03:11:16,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:11:16,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:11:16,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:11:16,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:11:16,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:11:16,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:11:16,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:11:16,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:11:16,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:11:16,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:11:16,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:11:16,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:11:16,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:11:16,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:11:16,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:11:16,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:11:16,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:11:16,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:11:16,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:11:16,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:11:16,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:11:16,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:11:16,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:11:16,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:11:16,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:11:16,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:11:16,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:11:16,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:11:16,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:11:16,582 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 03:11:16,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:11:16,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:11:16,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:11:16,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:11:16,937 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:11:16,938 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:11:17,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdd96b3e4/04fee93e74e74730b8cb4455e44879a1/FLAG167401616 [2020-10-15 03:11:17,812 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:11:17,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:11:17,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdd96b3e4/04fee93e74e74730b8cb4455e44879a1/FLAG167401616 [2020-10-15 03:11:17,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdd96b3e4/04fee93e74e74730b8cb4455e44879a1 [2020-10-15 03:11:17,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:11:17,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:11:17,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:11:17,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:11:17,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:11:17,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:11:17" (1/1) ... [2020-10-15 03:11:17,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d1a539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:17, skipping insertion in model container [2020-10-15 03:11:17,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:11:17" (1/1) ... [2020-10-15 03:11:17,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:11:18,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:11:19,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:11:20,003 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:11:21,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:11:21,182 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:11:21,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21 WrapperNode [2020-10-15 03:11:21,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:11:21,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:11:21,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:11:21,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:11:21,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21" (1/1) ... [2020-10-15 03:11:21,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21" (1/1) ... [2020-10-15 03:11:21,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21" (1/1) ... [2020-10-15 03:11:21,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21" (1/1) ... [2020-10-15 03:11:21,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21" (1/1) ... [2020-10-15 03:11:21,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21" (1/1) ... [2020-10-15 03:11:21,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21" (1/1) ... [2020-10-15 03:11:21,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:11:21,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:11:21,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:11:21,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:11:21,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21" (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 03:11:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:11:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:11:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:11:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:11:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:11:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:11:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:11:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:11:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:11:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:11:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:11:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:11:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:11:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:11:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:11:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:11:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:11:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:11:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:11:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:11:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:11:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:11:27,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:11:27,980 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:11:28,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:11:28 BoogieIcfgContainer [2020-10-15 03:11:28,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:11:28,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:11:28,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:11:28,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:11:28,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:11:17" (1/3) ... [2020-10-15 03:11:28,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226b0cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:11:28, skipping insertion in model container [2020-10-15 03:11:28,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:21" (2/3) ... [2020-10-15 03:11:28,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226b0cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:11:28, skipping insertion in model container [2020-10-15 03:11:28,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:11:28" (3/3) ... [2020-10-15 03:11:28,014 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 03:11:28,025 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:11:28,039 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:11:28,053 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:11:28,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:11:28,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:11:28,092 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:11:28,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:11:28,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:11:28,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:11:28,093 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:11:28,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:11:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states. [2020-10-15 03:11:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-15 03:11:28,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:28,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:28,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:28,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:28,198 INFO L82 PathProgramCache]: Analyzing trace with hash -713366920, now seen corresponding path program 1 times [2020-10-15 03:11:28,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:28,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689391182] [2020-10-15 03:11:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:30,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:31,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:32,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:34,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:34,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-15 03:11:34,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:11:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5235 [2020-10-15 03:11:34,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:34,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:11:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:11:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-15 03:11:34,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:11:36,070 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:11:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:11:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:36,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:36,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:11:36,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:11:36,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 03:11:36,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:36,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:11:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:11:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:11:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:11:36,720 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 03:11:36,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689391182] [2020-10-15 03:11:36,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:11:36,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:11:36,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748354940] [2020-10-15 03:11:36,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:11:36,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:11:36,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:11:36,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:11:36,765 INFO L87 Difference]: Start difference. First operand 1439 states. Second operand 5 states. [2020-10-15 03:11:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:11:53,741 INFO L93 Difference]: Finished difference Result 4195 states and 7476 transitions. [2020-10-15 03:11:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:11:53,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2020-10-15 03:11:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:11:53,785 INFO L225 Difference]: With dead ends: 4195 [2020-10-15 03:11:53,785 INFO L226 Difference]: Without dead ends: 2797 [2020-10-15 03:11:53,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:11:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2020-10-15 03:11:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2795. [2020-10-15 03:11:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-15 03:11:54,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4689 transitions. [2020-10-15 03:11:54,068 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4689 transitions. Word has length 360 [2020-10-15 03:11:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:11:54,070 INFO L479 AbstractCegarLoop]: Abstraction has 2795 states and 4689 transitions. [2020-10-15 03:11:54,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:11:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4689 transitions. [2020-10-15 03:11:54,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-15 03:11:54,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:11:54,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:54,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:11:54,082 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:11:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:11:54,083 INFO L82 PathProgramCache]: Analyzing trace with hash 119660565, now seen corresponding path program 1 times [2020-10-15 03:11:54,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:11:54,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132614143] [2020-10-15 03:11:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:11:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:11:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:54,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:55,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:55,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:55,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:57,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:57,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:58,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:58,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:59,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:11:59,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:11:59,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-15 03:11:59,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:11:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5200 [2020-10-15 03:11:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:11:59,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:11:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:11:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:11:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-15 03:11:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:00,549 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:12:00,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:00,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:00,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:00,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:12:00,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:00,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:12:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:12:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:01,068 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 03:12:01,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132614143] [2020-10-15 03:12:01,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:01,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:12:01,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702975247] [2020-10-15 03:12:01,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:12:01,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:01,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:12:01,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:01,074 INFO L87 Difference]: Start difference. First operand 2795 states and 4689 transitions. Second operand 4 states. [2020-10-15 03:12:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:21,630 INFO L93 Difference]: Finished difference Result 8121 states and 13602 transitions. [2020-10-15 03:12:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:12:21,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2020-10-15 03:12:21,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:21,664 INFO L225 Difference]: With dead ends: 8121 [2020-10-15 03:12:21,665 INFO L226 Difference]: Without dead ends: 5492 [2020-10-15 03:12:21,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2020-10-15 03:12:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 5490. [2020-10-15 03:12:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5490 states. [2020-10-15 03:12:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5490 states to 5490 states and 9177 transitions. [2020-10-15 03:12:21,900 INFO L78 Accepts]: Start accepts. Automaton has 5490 states and 9177 transitions. Word has length 362 [2020-10-15 03:12:21,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:21,902 INFO L479 AbstractCegarLoop]: Abstraction has 5490 states and 9177 transitions. [2020-10-15 03:12:21,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:12:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5490 states and 9177 transitions. [2020-10-15 03:12:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-15 03:12:21,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:21,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:12:21,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:12:21,923 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:21,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:21,923 INFO L82 PathProgramCache]: Analyzing trace with hash -718148803, now seen corresponding path program 1 times [2020-10-15 03:12:21,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:21,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805580908] [2020-10-15 03:12:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:22,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:25,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:26,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:27,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:27,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-15 03:12:27,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:12:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:12:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:27,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:12:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 03:12:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-15 03:12:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:27,909 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:12:27,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:27,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:27,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:27,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:27,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:12:27,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:27,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:27,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:12:27,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:27,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:12:27,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:28,362 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 03:12:28,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805580908] [2020-10-15 03:12:28,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:28,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:12:28,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181690474] [2020-10-15 03:12:28,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:12:28,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:28,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:12:28,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:28,369 INFO L87 Difference]: Start difference. First operand 5490 states and 9177 transitions. Second operand 4 states. [2020-10-15 03:12:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:47,461 INFO L93 Difference]: Finished difference Result 16040 states and 26776 transitions. [2020-10-15 03:12:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:12:47,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 363 [2020-10-15 03:12:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:47,515 INFO L225 Difference]: With dead ends: 16040 [2020-10-15 03:12:47,515 INFO L226 Difference]: Without dead ends: 10774 [2020-10-15 03:12:47,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:12:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2020-10-15 03:12:47,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10772. [2020-10-15 03:12:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10772 states. [2020-10-15 03:12:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10772 states to 10772 states and 17933 transitions. [2020-10-15 03:12:47,946 INFO L78 Accepts]: Start accepts. Automaton has 10772 states and 17933 transitions. Word has length 363 [2020-10-15 03:12:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:47,947 INFO L479 AbstractCegarLoop]: Abstraction has 10772 states and 17933 transitions. [2020-10-15 03:12:47,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:12:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 10772 states and 17933 transitions. [2020-10-15 03:12:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-15 03:12:47,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:47,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:12:47,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:12:47,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:47,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:47,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1539009858, now seen corresponding path program 1 times [2020-10-15 03:12:47,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:47,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961473462] [2020-10-15 03:12:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:49,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:50,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:50,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:51,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:53,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:53,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-15 03:12:53,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:12:53,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:12:53,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:53,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:12:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:12:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-15 03:12:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:54,157 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:12:54,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:54,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:54,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:54,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:12:54,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:54,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:12:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:12:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:54,483 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 03:12:54,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961473462] [2020-10-15 03:12:54,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:54,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:12:54,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399850937] [2020-10-15 03:12:54,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:12:54,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:54,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:12:54,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:12:54,486 INFO L87 Difference]: Start difference. First operand 10772 states and 17933 transitions. Second operand 5 states. [2020-10-15 03:13:07,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:07,771 INFO L93 Difference]: Finished difference Result 25248 states and 41885 transitions. [2020-10-15 03:13:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:13:07,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 363 [2020-10-15 03:13:07,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:07,832 INFO L225 Difference]: With dead ends: 25248 [2020-10-15 03:13:07,832 INFO L226 Difference]: Without dead ends: 15466 [2020-10-15 03:13:07,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:13:07,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2020-10-15 03:13:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 10760. [2020-10-15 03:13:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10760 states. [2020-10-15 03:13:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10760 states to 10760 states and 17909 transitions. [2020-10-15 03:13:08,413 INFO L78 Accepts]: Start accepts. Automaton has 10760 states and 17909 transitions. Word has length 363 [2020-10-15 03:13:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:08,414 INFO L479 AbstractCegarLoop]: Abstraction has 10760 states and 17909 transitions. [2020-10-15 03:13:08,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:13:08,414 INFO L276 IsEmpty]: Start isEmpty. Operand 10760 states and 17909 transitions. [2020-10-15 03:13:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-15 03:13:08,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:08,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:08,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:13:08,439 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:08,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:08,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1559468878, now seen corresponding path program 1 times [2020-10-15 03:13:08,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:08,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983899624] [2020-10-15 03:13:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:08,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:09,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:10,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:10,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:10,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:11,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:13,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-15 03:13:13,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:13:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-15 03:13:13,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:13,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:13:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-15 03:13:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:13:13,967 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2020-10-15 03:13:15,112 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:13:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:15,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:15,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:15,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:15,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:13:15,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:15,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:13:15,475 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 03:13:15,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983899624] [2020-10-15 03:13:15,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:15,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:13:15,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968579358] [2020-10-15 03:13:15,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:13:15,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:15,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:13:15,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:13:15,478 INFO L87 Difference]: Start difference. First operand 10760 states and 17909 transitions. Second operand 5 states. [2020-10-15 03:13:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:33,749 INFO L93 Difference]: Finished difference Result 31787 states and 52876 transitions. [2020-10-15 03:13:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:13:33,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 364 [2020-10-15 03:13:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:33,812 INFO L225 Difference]: With dead ends: 31787 [2020-10-15 03:13:33,812 INFO L226 Difference]: Without dead ends: 21293 [2020-10-15 03:13:33,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:13:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21293 states. [2020-10-15 03:13:34,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21293 to 21291. [2020-10-15 03:13:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21291 states. [2020-10-15 03:13:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21291 states to 21291 states and 35306 transitions. [2020-10-15 03:13:34,941 INFO L78 Accepts]: Start accepts. Automaton has 21291 states and 35306 transitions. Word has length 364 [2020-10-15 03:13:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:34,941 INFO L479 AbstractCegarLoop]: Abstraction has 21291 states and 35306 transitions. [2020-10-15 03:13:34,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:13:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 21291 states and 35306 transitions. [2020-10-15 03:13:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-15 03:13:34,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:34,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:34,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:13:34,977 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1604055111, now seen corresponding path program 1 times [2020-10-15 03:13:34,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:34,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263995948] [2020-10-15 03:13:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:35,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:36,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:37,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:38,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:38,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:40,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:40,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-15 03:13:40,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:13:40,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-15 03:13:40,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:40,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:40,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:13:40,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 03:13:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-15 03:13:40,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:41,063 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:13:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:41,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:41,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:41,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:13:41,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:41,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:41,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:41,338 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 03:13:41,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263995948] [2020-10-15 03:13:41,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:41,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:13:41,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984151735] [2020-10-15 03:13:41,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:13:41,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:41,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:13:41,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:13:41,341 INFO L87 Difference]: Start difference. First operand 21291 states and 35306 transitions. Second operand 4 states. [2020-10-15 03:14:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:05,582 INFO L93 Difference]: Finished difference Result 62645 states and 103775 transitions. [2020-10-15 03:14:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:14:05,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 366 [2020-10-15 03:14:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:05,652 INFO L225 Difference]: With dead ends: 62645 [2020-10-15 03:14:05,652 INFO L226 Difference]: Without dead ends: 42123 [2020-10-15 03:14:05,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:14:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42123 states. [2020-10-15 03:14:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42123 to 42121. [2020-10-15 03:14:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42121 states. [2020-10-15 03:14:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42121 states to 42121 states and 69577 transitions. [2020-10-15 03:14:09,441 INFO L78 Accepts]: Start accepts. Automaton has 42121 states and 69577 transitions. Word has length 366 [2020-10-15 03:14:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:09,441 INFO L479 AbstractCegarLoop]: Abstraction has 42121 states and 69577 transitions. [2020-10-15 03:14:09,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:14:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 42121 states and 69577 transitions. [2020-10-15 03:14:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-15 03:14:09,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:09,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:14:09,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:14:09,495 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:09,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:09,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1497606107, now seen corresponding path program 1 times [2020-10-15 03:14:09,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:09,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473314509] [2020-10-15 03:14:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:09,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:12,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:13,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:14,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:14,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-15 03:14:14,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:14:14,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 03:14:14,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:14,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:14,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:14:14,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:14:14,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-15 03:14:14,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:15,465 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:14:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:15,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:15,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:15,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:14:15,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:15,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:15,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:15,864 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 03:14:15,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473314509] [2020-10-15 03:14:15,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:15,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:14:15,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126882233] [2020-10-15 03:14:15,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:14:15,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:15,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:14:15,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:14:15,867 INFO L87 Difference]: Start difference. First operand 42121 states and 69577 transitions. Second operand 5 states. [2020-10-15 03:14:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:36,549 INFO L93 Difference]: Finished difference Result 125464 states and 207267 transitions. [2020-10-15 03:14:36,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:14:36,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 367 [2020-10-15 03:14:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:36,727 INFO L225 Difference]: With dead ends: 125464 [2020-10-15 03:14:36,727 INFO L226 Difference]: Without dead ends: 83368 [2020-10-15 03:14:36,802 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 03:14:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83368 states. [2020-10-15 03:14:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83368 to 83366. [2020-10-15 03:14:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83366 states. [2020-10-15 03:14:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83366 states to 83366 states and 137137 transitions. [2020-10-15 03:14:44,216 INFO L78 Accepts]: Start accepts. Automaton has 83366 states and 137137 transitions. Word has length 367 [2020-10-15 03:14:44,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:44,216 INFO L479 AbstractCegarLoop]: Abstraction has 83366 states and 137137 transitions. [2020-10-15 03:14:44,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:14:44,217 INFO L276 IsEmpty]: Start isEmpty. Operand 83366 states and 137137 transitions. [2020-10-15 03:14:44,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-15 03:14:44,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:44,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:14:44,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:14:44,321 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:44,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:44,321 INFO L82 PathProgramCache]: Analyzing trace with hash 543798446, now seen corresponding path program 1 times [2020-10-15 03:14:44,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:44,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251954734] [2020-10-15 03:14:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:47,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:48,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-15 03:14:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:14:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 03:14:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:49,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:14:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:14:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-15 03:14:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:50,300 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-15 03:14:50,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:50,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:50,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:50,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:50,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:14:50,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:50,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:50,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:50,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251954734] [2020-10-15 03:14:50,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:50,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:14:50,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220089365] [2020-10-15 03:14:50,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:14:50,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:50,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:14:50,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:14:50,550 INFO L87 Difference]: Start difference. First operand 83366 states and 137137 transitions. Second operand 4 states.