/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:47:35,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:47:35,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:47:35,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:47:35,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:47:35,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:47:35,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:47:35,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:47:35,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:47:35,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:47:35,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:47:35,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:47:35,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:47:35,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:47:35,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:47:35,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:47:35,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:47:35,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:47:35,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:47:35,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:47:35,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:47:35,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:47:35,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:47:35,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:47:35,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:47:35,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:47:35,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:47:35,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:47:35,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:47:35,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:47:35,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:47:35,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:47:35,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:47:35,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:47:35,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:47:35,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:47:35,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:47:35,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:47:35,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:47:35,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:47:35,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:47:35,855 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 [2020-10-29 12:47:35,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:47:35,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:47:35,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:47:35,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:47:35,908 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:47:35,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:47:35,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:47:35,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:47:35,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:47:35,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:47:35,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:47:35,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:47:35,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:47:35,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:47:35,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:47:35,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:47:35,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:47:35,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:47:35,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:47:35,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:47:35,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:47:35,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:47:35,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:47:35,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:47:35,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:47:35,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:47:35,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:47:35,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:47:35,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:47:35,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:47:36,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:47:36,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:47:36,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:47:36,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:47:36,343 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:47:36,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-10-29 12:47:36,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52beaf34b/f2283f82ee63448a99f78718e6c918ed/FLAG08bf4a712 [2020-10-29 12:47:37,243 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:47:37,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-10-29 12:47:37,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52beaf34b/f2283f82ee63448a99f78718e6c918ed/FLAG08bf4a712 [2020-10-29 12:47:37,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52beaf34b/f2283f82ee63448a99f78718e6c918ed [2020-10-29 12:47:37,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:47:37,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:47:37,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:47:37,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:47:37,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:47:37,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:47:37" (1/1) ... [2020-10-29 12:47:37,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c4053e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:37, skipping insertion in model container [2020-10-29 12:47:37,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:47:37" (1/1) ... [2020-10-29 12:47:37,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:47:37,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:47:38,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:47:38,059 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:47:38,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:47:38,333 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:47:38,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38 WrapperNode [2020-10-29 12:47:38,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:47:38,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:47:38,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:47:38,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:47:38,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38" (1/1) ... [2020-10-29 12:47:38,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38" (1/1) ... [2020-10-29 12:47:38,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38" (1/1) ... [2020-10-29 12:47:38,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38" (1/1) ... [2020-10-29 12:47:38,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38" (1/1) ... [2020-10-29 12:47:38,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38" (1/1) ... [2020-10-29 12:47:38,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38" (1/1) ... [2020-10-29 12:47:38,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:47:38,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:47:38,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:47:38,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:47:38,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38" (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 [2020-10-29 12:47:38,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:47:38,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:47:38,646 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:47:38,646 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:47:38,647 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:47:38,647 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:47:38,647 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:47:38,647 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-29 12:47:38,647 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-29 12:47:38,648 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:47:38,648 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:47:38,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:47:38,648 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:47:38,648 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:47:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:47:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:47:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:47:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:47:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:47:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:47:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:47:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:47:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:47:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:47:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:47:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:47:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:47:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 12:47:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 12:47:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:47:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:47:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:47:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:47:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:47:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:47:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:47:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:47:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:47:41,163 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:47:41,163 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:47:41,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:47:41 BoogieIcfgContainer [2020-10-29 12:47:41,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:47:41,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:47:41,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:47:41,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:47:41,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:47:37" (1/3) ... [2020-10-29 12:47:41,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9acd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:47:41, skipping insertion in model container [2020-10-29 12:47:41,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:38" (2/3) ... [2020-10-29 12:47:41,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9acd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:47:41, skipping insertion in model container [2020-10-29 12:47:41,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:47:41" (3/3) ... [2020-10-29 12:47:41,176 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-10-29 12:47:41,189 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:47:41,195 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:47:41,209 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:47:41,244 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:47:41,244 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:47:41,244 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:47:41,244 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:47:41,244 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:47:41,244 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:47:41,244 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:47:41,245 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:47:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states. [2020-10-29 12:47:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 12:47:41,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:47:41,310 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] [2020-10-29 12:47:41,310 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:47:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:47:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash 41819709, now seen corresponding path program 1 times [2020-10-29 12:47:41,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:47:41,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944567163] [2020-10-29 12:47:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:47:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:45,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:45,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 12:47:45,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:45,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3853 [2020-10-29 12:47:45,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:45,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:47:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 12:47:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:47:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:47:47,121 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:47:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:47:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:47,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:47,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:47:47,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:47:47,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:47,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:47,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:47:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:48,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:48,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:47:48,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:48,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-10-29 12:47:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:48,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:47:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 12:47:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:47:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:48,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:48,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:48,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:47:48,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:47:48,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:48,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:47:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:47:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:47:48,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:48,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:47:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:48,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:48,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:48,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:48,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:48,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:47:48,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:48,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:48,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:48,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:48,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 12:47:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:48,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:48,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:47:48,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:48,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-29 12:47:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:48,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:48,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:48,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:47:48,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:48,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:48,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-29 12:47:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:48,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:48,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:48,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:47:48,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:48,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-29 12:47:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:48,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:48,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:48,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:47:48,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:48,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-29 12:47:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:48,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:48,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:47:48,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:47:48,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:48,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:47:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:48,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:47:48,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944567163] [2020-10-29 12:47:48,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:47:48,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:47:48,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025029109] [2020-10-29 12:47:48,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:47:48,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:47:48,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:47:48,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:47:48,777 INFO L87 Difference]: Start difference. First operand 786 states. Second operand 14 states. [2020-10-29 12:47:59,170 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 12:48:00,497 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 12:48:01,870 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:48:03,029 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-29 12:48:04,666 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:05,691 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:06,859 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:08,058 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:09,291 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:10,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:48:10,763 INFO L93 Difference]: Finished difference Result 1079 states and 1897 transitions. [2020-10-29 12:48:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:48:10,766 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-29 12:48:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:48:10,799 INFO L225 Difference]: With dead ends: 1079 [2020-10-29 12:48:10,799 INFO L226 Difference]: Without dead ends: 848 [2020-10-29 12:48:10,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:48:10,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-29 12:48:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 778. [2020-10-29 12:48:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-29 12:48:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1337 transitions. [2020-10-29 12:48:11,065 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1337 transitions. Word has length 188 [2020-10-29 12:48:11,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:48:11,066 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1337 transitions. [2020-10-29 12:48:11,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:48:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1337 transitions. [2020-10-29 12:48:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-29 12:48:11,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:48:11,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:48:11,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:48:11,076 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:48:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:48:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1482097823, now seen corresponding path program 1 times [2020-10-29 12:48:11,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:48:11,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686008427] [2020-10-29 12:48:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:48:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:11,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:12,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:14,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:16,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-29 12:48:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:48:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 12:48:16,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:16,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:48:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 12:48:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 12:48:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:48:17,595 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:48:17,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:48:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:17,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:17,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:48:17,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:48:17,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:17,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:17,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:48:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:48:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-29 12:48:18,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:18,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 12:48:18,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:48:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:18,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:48:18,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:48:18,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:18,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:18,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:48:18,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:18,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:48:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:18,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:18,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:48:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:18,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:48:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:48:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:18,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:18,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:18,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:18,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:48:18,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:18,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:48:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:18,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-29 12:48:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:18,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:18,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:48:18,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:18,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:48:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:48:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:48:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:18,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-29 12:48:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:48:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:18,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-29 12:48:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:18,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:48:18,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:18,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:18,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-29 12:48:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:18,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:48:18,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:48:18,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:18,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:48:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:48:19,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686008427] [2020-10-29 12:48:19,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:48:19,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:48:19,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455692907] [2020-10-29 12:48:19,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:48:19,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:48:19,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:48:19,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:48:19,012 INFO L87 Difference]: Start difference. First operand 778 states and 1337 transitions. Second operand 11 states. [2020-10-29 12:48:20,138 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:48:28,031 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:48:28,859 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:48:29,840 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:30,404 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:31,195 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:48:31,705 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:32,434 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:48:33,195 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:34,764 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:35,354 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:36,782 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-29 12:48:37,114 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:48:37,462 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 12:48:38,008 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:48:38,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:48:38,199 INFO L93 Difference]: Finished difference Result 1354 states and 2283 transitions. [2020-10-29 12:48:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:48:38,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-29 12:48:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:48:38,212 INFO L225 Difference]: With dead ends: 1354 [2020-10-29 12:48:38,213 INFO L226 Difference]: Without dead ends: 1139 [2020-10-29 12:48:38,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:48:38,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-10-29 12:48:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 992. [2020-10-29 12:48:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-29 12:48:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1690 transitions. [2020-10-29 12:48:38,435 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1690 transitions. Word has length 252 [2020-10-29 12:48:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:48:38,437 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1690 transitions. [2020-10-29 12:48:38,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:48:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1690 transitions. [2020-10-29 12:48:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 12:48:38,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:48:38,445 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] [2020-10-29 12:48:38,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:48:38,445 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:48:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:48:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash -211946889, now seen corresponding path program 1 times [2020-10-29 12:48:38,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:48:38,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885223917] [2020-10-29 12:48:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:48:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:39,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:43,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:43,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 12:48:43,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:48:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 12:48:43,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:43,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:48:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:48:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 12:48:43,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:48:45,099 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:48:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:48:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:45,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:45,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:48:45,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:45,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:48:45,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:45,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:45,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:48:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:45,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:45,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:48:45,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:45,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-29 12:48:45,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:45,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:48:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:46,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:48:46,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:48:46,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:48:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:46,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:46,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:48:46,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:46,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:48:46,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:46,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:46,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:46,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:46,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:48:46,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:46,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:48:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:46,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:46,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:46,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:46,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:48:46,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:46,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:48:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:46,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:48:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:46,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:46,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:46,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:48:46,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:46,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:48:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:48:46,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-29 12:48:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:46,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:46,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:48:46,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:48:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:46,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:48:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:48:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:46,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-29 12:48:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:46,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:46,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:46,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:46,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:48:46,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:46,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 12:48:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:46,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:46,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:46,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:48:46,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:46,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:46,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:46,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 12:48:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:46,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:46,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:48:46,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:48:46,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:46,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:48:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:46,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:48:46,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885223917] [2020-10-29 12:48:46,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:48:46,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:48:46,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528042174] [2020-10-29 12:48:46,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:48:46,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:48:46,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:48:46,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:48:46,958 INFO L87 Difference]: Start difference. First operand 992 states and 1690 transitions. Second operand 11 states. [2020-10-29 12:48:48,268 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:48:49,485 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-29 12:48:51,239 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-29 12:48:52,477 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:49:05,682 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:49:06,296 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:06,761 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:07,778 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:08,583 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:09,968 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:10,684 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:12,125 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:12,529 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:13,779 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:14,384 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:49:16,628 INFO L93 Difference]: Finished difference Result 3137 states and 5332 transitions. [2020-10-29 12:49:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:49:16,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-29 12:49:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:49:16,642 INFO L225 Difference]: With dead ends: 3137 [2020-10-29 12:49:16,642 INFO L226 Difference]: Without dead ends: 2218 [2020-10-29 12:49:16,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:49:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2020-10-29 12:49:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1947. [2020-10-29 12:49:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1947 states. [2020-10-29 12:49:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 3288 transitions. [2020-10-29 12:49:17,001 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 3288 transitions. Word has length 256 [2020-10-29 12:49:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:49:17,002 INFO L481 AbstractCegarLoop]: Abstraction has 1947 states and 3288 transitions. [2020-10-29 12:49:17,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:49:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 3288 transitions. [2020-10-29 12:49:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 12:49:17,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:49:17,010 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] [2020-10-29 12:49:17,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:49:17,011 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:49:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:49:17,011 INFO L82 PathProgramCache]: Analyzing trace with hash 899920763, now seen corresponding path program 1 times [2020-10-29 12:49:17,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:49:17,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056627043] [2020-10-29 12:49:17,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:49:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:17,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:17,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:18,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:22,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:22,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-29 12:49:22,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:49:22,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-29 12:49:22,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:22,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:49:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:49:22,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 12:49:22,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:23,529 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:49:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:49:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:23,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:23,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:49:23,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:23,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:49:23,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:23,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:23,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:23,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:49:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:23,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:24,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:24,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:49:24,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-29 12:49:24,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:24,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:49:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:49:24,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:24,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:49:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:24,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:24,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:24,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:49:24,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:24,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:49:24,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:24,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:49:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:49:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:24,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:24,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:24,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:24,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:49:24,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:24,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:24,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:49:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:24,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:49:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:24,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:24,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:24,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:24,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:49:24,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:24,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:49:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-29 12:49:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:24,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:24,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:49:24,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:49:24,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:24,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:49:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:49:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:24,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-29 12:49:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:24,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:24,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:24,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:49:24,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:24,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:24,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-29 12:49:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:24,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:24,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:24,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:49:24,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:24,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:24,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:24,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 12:49:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:24,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:24,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:49:24,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:49:24,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:24,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:49:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:24,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:49:25,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056627043] [2020-10-29 12:49:25,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:49:25,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:49:25,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808299260] [2020-10-29 12:49:25,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:49:25,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:49:25,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:49:25,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:49:25,359 INFO L87 Difference]: Start difference. First operand 1947 states and 3288 transitions. Second operand 11 states. [2020-10-29 12:49:26,551 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:49:27,747 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-29 12:49:28,971 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 12:49:31,288 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-29 12:49:53,459 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:49:54,088 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:54,567 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:49:55,471 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:55,907 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:56,727 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:49:57,744 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:58,549 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:59,371 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:00,301 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:01,343 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:01,834 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:02,413 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:03,404 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:03,999 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:04,661 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:50:06,581 INFO L93 Difference]: Finished difference Result 8004 states and 13516 transitions. [2020-10-29 12:50:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:50:06,583 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-29 12:50:06,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:50:06,616 INFO L225 Difference]: With dead ends: 8004 [2020-10-29 12:50:06,616 INFO L226 Difference]: Without dead ends: 6195 [2020-10-29 12:50:06,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:50:06,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6195 states. [2020-10-29 12:50:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6195 to 5497. [2020-10-29 12:50:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5497 states. [2020-10-29 12:50:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 9261 transitions. [2020-10-29 12:50:07,681 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 9261 transitions. Word has length 257 [2020-10-29 12:50:07,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:50:07,681 INFO L481 AbstractCegarLoop]: Abstraction has 5497 states and 9261 transitions. [2020-10-29 12:50:07,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:50:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 9261 transitions. [2020-10-29 12:50:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 12:50:07,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:50:07,698 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] [2020-10-29 12:50:07,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:50:07,699 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:50:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:50:07,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1965062172, now seen corresponding path program 1 times [2020-10-29 12:50:07,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:50:07,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656737099] [2020-10-29 12:50:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:50:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:08,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:12,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:12,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-29 12:50:12,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:50:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-29 12:50:12,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:12,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:50:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:50:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-29 12:50:12,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:14,228 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:50:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:50:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:14,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:14,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:14,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:50:14,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:50:14,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:14,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:50:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:14,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:50:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:14,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:14,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:50:14,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:14,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-29 12:50:14,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:14,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:50:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:50:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:50:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:50:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:14,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:50:14,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:50:14,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:14,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:50:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:50:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:50:14,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:15,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:50:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:15,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:15,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:50:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:50:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:15,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:50:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:50:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:50:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:50:15,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:50:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:15,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:15,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:15,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:50:15,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:50:15,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:15,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:50:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:50:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:50:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:15,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-29 12:50:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:15,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:15,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:15,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:50:15,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:15,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:50:15,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:15,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:50:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 12:50:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:50:15,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-29 12:50:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:15,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:15,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:50:15,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:50:15,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:15,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:50:15,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:15,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:15,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-29 12:50:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:15,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:15,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:50:15,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:50:15,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:15,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:50:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:50:15,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 12:50:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:15,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:15,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:50:15,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:50:15,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:15,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:50:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:15,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:50:15,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656737099] [2020-10-29 12:50:15,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:50:15,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:50:15,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443487993] [2020-10-29 12:50:15,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:50:15,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:50:15,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:50:15,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:50:15,785 INFO L87 Difference]: Start difference. First operand 5497 states and 9261 transitions. Second operand 11 states. [2020-10-29 12:50:17,022 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:50:18,284 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-29 12:50:19,874 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 12:50:22,258 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-29 12:50:46,404 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:50:47,189 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:47,770 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:48,933 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:49,350 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:50,260 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:51,917 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:52,664 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:53,524 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:54,858 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:56,411 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:56,932 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:57,406 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:58,848 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:59,576 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:51:00,301 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:51:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:51:03,124 INFO L93 Difference]: Finished difference Result 22913 states and 38562 transitions. [2020-10-29 12:51:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:51:03,126 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 258 [2020-10-29 12:51:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:51:03,207 INFO L225 Difference]: With dead ends: 22913 [2020-10-29 12:51:03,207 INFO L226 Difference]: Without dead ends: 17669 [2020-10-29 12:51:03,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:51:03,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17669 states. [2020-10-29 12:51:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17669 to 15783. [2020-10-29 12:51:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15783 states. [2020-10-29 12:51:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15783 states to 15783 states and 26468 transitions. [2020-10-29 12:51:06,384 INFO L78 Accepts]: Start accepts. Automaton has 15783 states and 26468 transitions. Word has length 258 [2020-10-29 12:51:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:51:06,385 INFO L481 AbstractCegarLoop]: Abstraction has 15783 states and 26468 transitions. [2020-10-29 12:51:06,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:51:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 15783 states and 26468 transitions. [2020-10-29 12:51:06,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 12:51:06,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:51:06,430 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] [2020-10-29 12:51:06,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:51:06,431 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:51:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:51:06,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1838274090, now seen corresponding path program 1 times [2020-10-29 12:51:06,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:51:06,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031954850] [2020-10-29 12:51:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:51:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:07,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:11,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:11,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-29 12:51:11,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:51:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-29 12:51:11,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:11,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:51:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:51:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-10-29 12:51:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:12,980 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:51:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:51:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:13,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:13,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:13,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:51:13,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:51:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:51:13,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:13,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:51:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:51:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:51:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:51:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:13,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:13,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:51:13,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:51:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 12:51:13,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:13,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:51:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:51:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:51:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:13,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:51:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:13,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:51:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:51:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:13,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:13,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:51:13,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:51:13,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:51:13,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:13,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:51:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:51:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:51:13,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:51:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:13,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:13,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:51:13,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:51:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:51:13,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:13,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:51:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:51:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:51:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:13,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-29 12:51:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:13,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:13,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:13,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:51:13,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:51:13,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:51:13,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:13,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:51:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:51:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:51:13,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:14,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-29 12:51:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:14,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:14,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:14,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:51:14,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:51:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:51:14,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:14,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:51:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:51:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:51:14,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-29 12:51:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:14,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:14,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:14,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:51:14,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:51:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:51:14,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:14,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:51:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:51:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:51:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 12:51:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:51:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:51:14,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:51:14,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:51:14,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:51:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:51:14,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:51:14,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:51:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:51:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:51:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:51:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:51:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:51:14,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031954850] [2020-10-29 12:51:14,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:51:14,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:51:14,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890423825] [2020-10-29 12:51:14,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:51:14,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:51:14,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:51:14,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:51:14,254 INFO L87 Difference]: Start difference. First operand 15783 states and 26468 transitions. Second operand 11 states. [2020-10-29 12:51:15,535 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:51:16,848 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 410