/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:02:53,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:02:53,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:02:53,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:02:53,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:02:53,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:02:53,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:02:53,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:02:53,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:02:53,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:02:53,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:02:53,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:02:53,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:02:53,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:02:53,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:02:53,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:02:53,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:02:53,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:02:54,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:02:54,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:02:54,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:02:54,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:02:54,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:02:54,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:02:54,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:02:54,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:02:54,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:02:54,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:02:54,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:02:54,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:02:54,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:02:54,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:02:54,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:02:54,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:02:54,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:02:54,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:02:54,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:02:54,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:02:54,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:02:54,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:02:54,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:02:54,050 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 [2020-10-28 18:02:54,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:02:54,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:02:54,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:02:54,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:02:54,102 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:02:54,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:02:54,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:02:54,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:02:54,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:02:54,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:02:54,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:02:54,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:02:54,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:02:54,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:02:54,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:02:54,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:02:54,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:02:54,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:02:54,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:02:54,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:02:54,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:02:54,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:02:54,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:02:54,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:02:54,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:02:54,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:02:54,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:02:54,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:02:54,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:02:54,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:02:54,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:02:54,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:02:54,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:02:54,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:02:54,574 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:02:54,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-28 18:02:54,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfcef5dcd/7946d7397ee742098787346ca408f145/FLAGee50e8e1f [2020-10-28 18:02:55,460 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:02:55,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-28 18:02:55,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfcef5dcd/7946d7397ee742098787346ca408f145/FLAGee50e8e1f [2020-10-28 18:02:55,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfcef5dcd/7946d7397ee742098787346ca408f145 [2020-10-28 18:02:55,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:02:55,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:02:55,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:02:55,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:02:55,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:02:55,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:02:55" (1/1) ... [2020-10-28 18:02:55,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecab492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:55, skipping insertion in model container [2020-10-28 18:02:55,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:02:55" (1/1) ... [2020-10-28 18:02:55,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:02:55,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:02:56,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:02:56,374 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:02:56,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:02:56,581 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:02:56,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56 WrapperNode [2020-10-28 18:02:56,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:02:56,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:02:56,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:02:56,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:02:56,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56" (1/1) ... [2020-10-28 18:02:56,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56" (1/1) ... [2020-10-28 18:02:56,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56" (1/1) ... [2020-10-28 18:02:56,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56" (1/1) ... [2020-10-28 18:02:56,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56" (1/1) ... [2020-10-28 18:02:56,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56" (1/1) ... [2020-10-28 18:02:56,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56" (1/1) ... [2020-10-28 18:02:56,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:02:56,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:02:56,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:02:56,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:02:56,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56" (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 [2020-10-28 18:02:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:02:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:02:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:02:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:02:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 18:02:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 18:02:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 18:02:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-28 18:02:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-28 18:02:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 18:02:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 18:02:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:02:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 18:02:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:02:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:02:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:02:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:02:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:02:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:02:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:02:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:02:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:02:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:02:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:02:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:02:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:02:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:02:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:02:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:02:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:02:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:02:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:02:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:02:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:02:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:02:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:02:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:02:59,883 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:02:59,884 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 18:02:59,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:02:59 BoogieIcfgContainer [2020-10-28 18:02:59,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:02:59,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:02:59,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:02:59,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:02:59,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:02:55" (1/3) ... [2020-10-28 18:02:59,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69854c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:02:59, skipping insertion in model container [2020-10-28 18:02:59,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:02:56" (2/3) ... [2020-10-28 18:02:59,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69854c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:02:59, skipping insertion in model container [2020-10-28 18:02:59,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:02:59" (3/3) ... [2020-10-28 18:02:59,898 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-28 18:02:59,913 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:02:59,919 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:02:59,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:02:59,970 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:02:59,970 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:02:59,970 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:02:59,971 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:02:59,971 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:02:59,971 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:02:59,971 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:02:59,971 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:03:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states. [2020-10-28 18:03:00,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 18:03:00,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:03:00,060 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] [2020-10-28 18:03:00,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:03:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:03:00,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1718594068, now seen corresponding path program 1 times [2020-10-28 18:03:00,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:03:00,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694135789] [2020-10-28 18:03:00,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:03:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:01,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:01,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 18:03:01,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-10-28 18:03:01,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:01,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-28 18:03:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:03:03,315 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:03:03,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:03:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:03,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:03,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:03,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:03:03,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 18:03:03,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:03,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:03:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:03,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:03:03,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 18:03:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:03,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 18:03:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:03,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:03,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:03:03,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:03,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:03:03,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:03,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:03,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 18:03:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 18:03:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:03,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:03,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:03,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:03,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:03:03,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:03,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:03,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 18:03:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:03,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:03,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:03,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:03:03,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:03,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:03,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:03,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:03,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:03,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:03,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 18:03:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:03,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:03,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:03,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:03,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:03:03,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:03,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:03,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 18:03:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:03,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:03,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:03,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:03,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:03:03,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:03,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-28 18:03:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:03,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:03,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:03,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:03,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:03:03,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:03,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:03,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:03,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:03,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:03,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 18:03:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:04,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:04,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:03:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:03:04,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:04,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:03:04,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694135789] [2020-10-28 18:03:04,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:03:04,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:03:04,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827887806] [2020-10-28 18:03:04,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:03:04,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:03:04,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:03:04,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:03:04,162 INFO L87 Difference]: Start difference. First operand 777 states. Second operand 8 states. [2020-10-28 18:03:07,363 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:08,207 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:09,101 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:09,893 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:10,765 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:12,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:03:12,012 INFO L93 Difference]: Finished difference Result 1056 states and 1861 transitions. [2020-10-28 18:03:12,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:03:12,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-28 18:03:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:03:12,042 INFO L225 Difference]: With dead ends: 1056 [2020-10-28 18:03:12,042 INFO L226 Difference]: Without dead ends: 834 [2020-10-28 18:03:12,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:03:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-28 18:03:12,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 769. [2020-10-28 18:03:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-28 18:03:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1388 transitions. [2020-10-28 18:03:12,287 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1388 transitions. Word has length 188 [2020-10-28 18:03:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:03:12,288 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1388 transitions. [2020-10-28 18:03:12,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:03:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1388 transitions. [2020-10-28 18:03:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 18:03:12,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:03:12,294 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] [2020-10-28 18:03:12,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:03:12,295 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:03:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:03:12,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1274693394, now seen corresponding path program 1 times [2020-10-28 18:03:12,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:03:12,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278935424] [2020-10-28 18:03:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:03:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:15,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:15,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 18:03:15,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3049 [2020-10-28 18:03:15,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:15,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 18:03:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 18:03:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 18:03:15,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:16,757 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:03:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:03:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:16,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:16,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:16,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:03:16,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:03:16,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:16,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:03:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:17,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:17,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:03:17,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-28 18:03:17,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:17,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:03:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 18:03:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:17,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 18:03:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:17,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:17,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:03:17,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:03:17,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:17,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:03:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 18:03:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:03:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:17,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 18:03:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:17,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:17,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:17,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:03:17,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:17,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:17,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:17,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:17,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 18:03:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:17,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:17,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:17,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:17,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:03:17,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:17,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:17,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 18:03:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:18,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:18,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:18,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:18,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:03:18,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:18,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:18,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 18:03:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:18,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:18,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:18,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:03:18,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:18,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:18,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-28 18:03:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:18,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:18,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:18,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:18,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:03:18,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:18,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:18,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:18,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 18:03:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:18,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:18,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:03:18,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:03:18,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:18,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:03:18,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278935424] [2020-10-28 18:03:18,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:03:18,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 18:03:18,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790769175] [2020-10-28 18:03:18,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 18:03:18,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:03:18,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 18:03:18,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-28 18:03:18,313 INFO L87 Difference]: Start difference. First operand 769 states and 1388 transitions. Second operand 14 states. [2020-10-28 18:03:28,936 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:03:30,207 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-28 18:03:31,635 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:03:32,802 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:03:34,304 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:35,225 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:36,327 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:37,336 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:38,416 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:03:40,172 INFO L93 Difference]: Finished difference Result 1057 states and 1863 transitions. [2020-10-28 18:03:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 18:03:40,174 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-28 18:03:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:03:40,182 INFO L225 Difference]: With dead ends: 1057 [2020-10-28 18:03:40,182 INFO L226 Difference]: Without dead ends: 845 [2020-10-28 18:03:40,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:03:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-28 18:03:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 769. [2020-10-28 18:03:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-28 18:03:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1323 transitions. [2020-10-28 18:03:40,382 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1323 transitions. Word has length 188 [2020-10-28 18:03:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:03:40,383 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1323 transitions. [2020-10-28 18:03:40,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 18:03:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1323 transitions. [2020-10-28 18:03:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 18:03:40,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:03:40,401 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] [2020-10-28 18:03:40,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:03:40,402 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:03:40,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:03:40,403 INFO L82 PathProgramCache]: Analyzing trace with hash 595284816, now seen corresponding path program 1 times [2020-10-28 18:03:40,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:03:40,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783544166] [2020-10-28 18:03:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:03:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:40,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:45,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:45,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-28 18:03:45,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:03:45,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-28 18:03:45,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:45,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:03:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-28 18:03:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 18:03:45,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:46,816 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:03:46,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:03:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:46,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:46,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:03:46,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:46,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 18:03:46,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:46,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:46,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:03:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:47,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:47,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:03:47,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-28 18:03:47,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:47,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 18:03:47,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:03:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:47,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:47,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:47,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:03:47,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:47,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:03:47,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:47,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:03:47,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:47,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:03:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:47,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:47,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:47,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:47,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:03:47,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:47,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:03:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:47,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:47,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:47,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:47,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:03:47,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:47,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:47,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:47,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:03:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:47,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:47,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:47,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:47,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:03:47,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:47,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:47,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:03:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:47,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:47,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:47,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:03:47,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:47,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:03:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 18:03:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 18:03:47,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:47,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-28 18:03:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:47,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:47,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:47,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:03:47,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:47,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:47,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:47,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:47,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:47,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-28 18:03:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:47,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:47,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:47,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:03:47,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:03:47,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:47,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:03:48,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783544166] [2020-10-28 18:03:48,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:03:48,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:03:48,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874356557] [2020-10-28 18:03:48,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:03:48,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:03:48,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:03:48,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:03:48,158 INFO L87 Difference]: Start difference. First operand 769 states and 1323 transitions. Second operand 11 states. [2020-10-28 18:03:49,362 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:03:56,548 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:03:57,292 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:03:58,202 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:03:59,010 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:59,730 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:00,379 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:04:00,688 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:02,555 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:03,165 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:03,824 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:05,258 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:04:05,582 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:06,069 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:04:06,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:04:06,121 INFO L93 Difference]: Finished difference Result 1304 states and 2208 transitions. [2020-10-28 18:04:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 18:04:06,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-28 18:04:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:04:06,131 INFO L225 Difference]: With dead ends: 1304 [2020-10-28 18:04:06,131 INFO L226 Difference]: Without dead ends: 1098 [2020-10-28 18:04:06,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-28 18:04:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-10-28 18:04:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 962. [2020-10-28 18:04:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-28 18:04:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1641 transitions. [2020-10-28 18:04:06,302 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1641 transitions. Word has length 252 [2020-10-28 18:04:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:04:06,302 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1641 transitions. [2020-10-28 18:04:06,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:04:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1641 transitions. [2020-10-28 18:04:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 18:04:06,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:04:06,309 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] [2020-10-28 18:04:06,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:04:06,310 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:04:06,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:04:06,311 INFO L82 PathProgramCache]: Analyzing trace with hash 295384056, now seen corresponding path program 1 times [2020-10-28 18:04:06,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:04:06,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398092328] [2020-10-28 18:04:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:04:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:06,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:07,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:10,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:11,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:11,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 18:04:11,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:04:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 18:04:11,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:11,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:04:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-28 18:04:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:12,734 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:04:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:04:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:12,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:12,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:04:12,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:12,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:04:12,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:12,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:12,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:12,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:12,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:04:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:13,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:13,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:04:13,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:13,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-28 18:04:13,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:13,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 18:04:13,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:04:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:13,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:13,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:04:13,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:13,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:04:13,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:13,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:04:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:04:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:13,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:13,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:13,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:13,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:04:13,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:13,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:13,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:13,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:13,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:04:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:13,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:13,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:13,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:04:13,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:13,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:13,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:04:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:13,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:13,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:13,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:13,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:04:13,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:13,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:13,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:13,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:04:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:13,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:13,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:04:13,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:04:13,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:13,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:04:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 18:04:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:14,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 18:04:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:14,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:14,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:14,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:04:14,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:14,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:04:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-28 18:04:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:14,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:14,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:04:14,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:04:14,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:14,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:04:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:14,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:04:14,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398092328] [2020-10-28 18:04:14,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:04:14,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:04:14,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668842112] [2020-10-28 18:04:14,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:04:14,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:04:14,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:04:14,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:04:14,268 INFO L87 Difference]: Start difference. First operand 962 states and 1641 transitions. Second operand 11 states. [2020-10-28 18:04:15,461 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:04:16,636 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:04:18,333 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:04:19,467 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:04:34,323 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:04:34,832 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:35,274 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:36,253 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:37,001 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:38,287 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:39,095 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:40,244 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:41,021 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:42,474 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:42,893 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:44,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:04:44,538 INFO L93 Difference]: Finished difference Result 3100 states and 5297 transitions. [2020-10-28 18:04:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:04:44,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-28 18:04:44,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:04:44,550 INFO L225 Difference]: With dead ends: 3100 [2020-10-28 18:04:44,551 INFO L226 Difference]: Without dead ends: 2209 [2020-10-28 18:04:44,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:04:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2020-10-28 18:04:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 1952. [2020-10-28 18:04:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2020-10-28 18:04:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3311 transitions. [2020-10-28 18:04:44,903 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3311 transitions. Word has length 256 [2020-10-28 18:04:44,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:04:44,904 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 3311 transitions. [2020-10-28 18:04:44,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:04:44,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3311 transitions. [2020-10-28 18:04:44,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 18:04:44,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:04:44,912 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] [2020-10-28 18:04:44,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:04:44,912 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:04:44,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:04:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash 147428310, now seen corresponding path program 1 times [2020-10-28 18:04:44,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:04:44,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095192789] [2020-10-28 18:04:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:04:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:45,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:48,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:48,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:50,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:50,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-28 18:04:50,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:04:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 18:04:50,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:50,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:04:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 18:04:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:51,364 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:04:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:04:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:51,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:51,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:51,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:04:51,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:51,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:04:51,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:51,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:04:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:51,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:51,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:04:51,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-28 18:04:51,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:51,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:04:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:52,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:04:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:52,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:52,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:04:52,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:04:52,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:52,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:04:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:04:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:04:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:04:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:52,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:52,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:52,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:52,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:52,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:04:52,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:52,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:52,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:52,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:04:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:52,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:52,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:52,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:52,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:04:52,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:52,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:52,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:52,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:04:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:52,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:52,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:04:52,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:04:52,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:52,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:04:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 18:04:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 18:04:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:52,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:52,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:52,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:04:52,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:52,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:04:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 18:04:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:52,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:52,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:04:52,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:04:52,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:52,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:04:52,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:52,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:04:52,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095192789] [2020-10-28 18:04:52,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:04:52,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:04:52,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042021300] [2020-10-28 18:04:52,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:04:52,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:04:52,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:04:52,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:04:52,737 INFO L87 Difference]: Start difference. First operand 1952 states and 3311 transitions. Second operand 11 states. [2020-10-28 18:04:54,028 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:04:55,172 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:04:56,769 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:04:57,970 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:05:13,766 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:05:14,305 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:05:14,832 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:05:15,882 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:05:16,630 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:05:17,820 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:05:18,624 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:05:19,753 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:05:20,492 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:05:22,141 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:05:22,651 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:05:24,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:05:24,382 INFO L93 Difference]: Finished difference Result 6502 states and 11058 transitions. [2020-10-28 18:05:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:05:24,387 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-28 18:05:24,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:05:24,411 INFO L225 Difference]: With dead ends: 6502 [2020-10-28 18:05:24,412 INFO L226 Difference]: Without dead ends: 4661 [2020-10-28 18:05:24,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:05:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2020-10-28 18:05:25,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4162. [2020-10-28 18:05:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4162 states. [2020-10-28 18:05:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 7035 transitions. [2020-10-28 18:05:25,288 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 7035 transitions. Word has length 257 [2020-10-28 18:05:25,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:05:25,289 INFO L481 AbstractCegarLoop]: Abstraction has 4162 states and 7035 transitions. [2020-10-28 18:05:25,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:05:25,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 7035 transitions. [2020-10-28 18:05:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 18:05:25,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:05:25,304 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] [2020-10-28 18:05:25,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:05:25,305 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:05:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:05:25,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1024909757, now seen corresponding path program 1 times [2020-10-28 18:05:25,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:05:25,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238012046] [2020-10-28 18:05:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:05:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:27,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:28,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:30,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:30,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-28 18:05:30,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:05:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 18:05:30,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:30,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:05:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:05:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 18:05:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:05:31,719 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:05:31,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:05:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:31,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:31,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:31,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:05:31,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:05:31,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:05:31,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:31,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:05:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:05:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:05:31,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:05:31,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:05:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:32,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:32,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:05:32,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:05:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 18:05:32,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:32,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:05:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:05:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 18:05:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:05:32,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:05:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:32,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:32,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:05:32,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:05:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:05:32,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:32,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:05:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:05:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:05:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:05:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:05:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:32,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:32,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:32,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:05:32,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:05:32,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:05:32,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:32,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:05:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:05:32,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:05:32,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:05:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:05:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:32,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:32,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:05:32,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:05:32,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:05:32,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:32,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:05:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:05:32,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:05:32,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:05:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:05:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:32,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:32,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:05:32,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:05:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:05:32,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:32,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:05:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:05:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:05:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:05:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:05:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:32,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:32,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:32,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:05:32,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:05:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:05:32,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:32,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:05:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:05:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 18:05:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:05:32,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 18:05:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:32,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:32,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:05:32,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:05:32,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:05:32,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:32,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:05:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:05:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:05:32,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:05:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 18:05:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:05:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:05:32,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:05:32,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:05:32,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:05:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:05:32,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:05:32,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:05:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:05:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:05:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:05:32,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:05:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:05:32,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238012046] [2020-10-28 18:05:32,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:05:32,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:05:32,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450387055] [2020-10-28 18:05:32,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:05:32,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:05:32,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:05:32,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:05:32,822 INFO L87 Difference]: Start difference. First operand 4162 states and 7035 transitions. Second operand 11 states. [2020-10-28 18:05:34,028 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:05:35,212 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:05:36,712 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:05:37,915 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:05:54,089 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:05:54,694 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:05:55,239 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:05:56,280 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:05:57,043 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:05:58,325 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:05:59,188 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:06:00,345 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:06:01,194 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:06:02,970 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:06:03,444 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:06:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:06:05,708 INFO L93 Difference]: Finished difference Result 13867 states and 23498 transitions. [2020-10-28 18:06:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:06:05,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-28 18:06:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:06:05,766 INFO L225 Difference]: With dead ends: 13867 [2020-10-28 18:06:05,766 INFO L226 Difference]: Without dead ends: 9886 [2020-10-28 18:06:05,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:06:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9886 states. [2020-10-28 18:06:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9886 to 8915. [2020-10-28 18:06:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8915 states. [2020-10-28 18:06:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8915 states to 8915 states and 14990 transitions. [2020-10-28 18:06:07,610 INFO L78 Accepts]: Start accepts. Automaton has 8915 states and 14990 transitions. Word has length 257 [2020-10-28 18:06:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:06:07,611 INFO L481 AbstractCegarLoop]: Abstraction has 8915 states and 14990 transitions. [2020-10-28 18:06:07,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:06:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8915 states and 14990 transitions. [2020-10-28 18:06:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 18:06:07,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:06:07,636 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] [2020-10-28 18:06:07,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:06:07,636 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:06:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:06:07,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1433576345, now seen corresponding path program 1 times [2020-10-28 18:06:07,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:06:07,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207089381] [2020-10-28 18:06:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:06:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:07,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:07,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:12,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 18:06:12,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:06:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-28 18:06:12,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:12,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:06:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:06:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 18:06:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:06:14,066 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:06:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:06:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:14,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:14,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:06:14,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:06:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:06:14,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:14,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:06:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:06:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:06:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:06:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:06:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:14,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:14,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:14,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:06:14,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:06:14,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-28 18:06:14,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:14,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:06:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:06:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:06:14,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:06:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:06:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:14,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:14,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:14,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:06:14,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:06:14,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:06:14,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:14,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:06:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:06:14,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:06:14,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:06:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:06:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:14,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:14,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:06:14,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:06:14,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:06:14,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:14,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:06:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:06:14,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:06:14,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:06:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:06:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:14,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:14,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:06:14,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:06:14,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:06:14,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:14,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:06:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:06:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:06:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:06:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:06:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:14,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:14,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:06:14,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:06:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:06:14,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:14,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:06:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:06:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:06:14,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:06:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:06:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:15,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 18:06:15,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:06:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:06:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:15,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:06:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 18:06:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 18:06:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:06:15,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-28 18:06:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:15,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:15,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:06:15,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:06:15,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:06:15,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:15,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:06:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:06:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:06:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:06:15,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-28 18:06:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:06:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:06:15,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:06:15,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:06:15,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:06:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:06:15,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:06:15,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:06:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:06:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:06:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:06:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:06:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:06:15,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207089381] [2020-10-28 18:06:15,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:06:15,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:06:15,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767541336] [2020-10-28 18:06:15,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:06:15,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:06:15,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:06:15,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:06:15,451 INFO L87 Difference]: Start difference. First operand 8915 states and 14990 transitions. Second operand 11 states. [2020-10-28 18:06:16,720 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:06:17,962 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-28 18:06:20,812 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-28 18:06:22,096 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 414