/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/systemc/toy.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:43:04,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:43:04,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:43:04,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:43:04,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:43:04,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:43:04,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:43:04,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:43:04,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:43:04,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:43:04,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:43:04,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:43:04,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:43:04,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:43:04,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:43:04,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:43:04,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:43:04,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:43:04,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:43:04,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:43:04,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:43:04,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:43:04,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:43:04,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:43:04,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:43:04,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:43:04,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:43:04,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:43:04,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:43:04,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:43:04,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:43:04,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:43:04,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:43:04,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:43:04,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:43:04,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:43:04,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:43:04,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:43:04,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:43:04,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:43:04,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:43:04,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:43:04,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:43:04,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:43:04,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:43:04,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:43:04,701 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:43:04,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:43:04,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:43:04,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:43:04,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:43:04,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:43:04,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:43:04,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:43:04,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:43:04,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:43:04,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:43:04,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:43:04,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:43:04,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:43:04,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:43:04,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:43:04,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:43:04,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:43:04,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:43:04,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:43:04,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:43:04,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:43:04,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:43:04,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:43:04,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:43:04,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:43:05,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:43:05,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:43:05,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:43:05,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:43:05,193 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:43:05,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy.cil.c [2020-10-29 14:43:05,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2acc96bc3/d9906067e8334ceca3b11b4b2287e5e1/FLAG07464c160 [2020-10-29 14:43:06,083 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:43:06,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy.cil.c [2020-10-29 14:43:06,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2acc96bc3/d9906067e8334ceca3b11b4b2287e5e1/FLAG07464c160 [2020-10-29 14:43:06,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2acc96bc3/d9906067e8334ceca3b11b4b2287e5e1 [2020-10-29 14:43:06,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:43:06,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:43:06,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:43:06,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:43:06,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:43:06,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:43:06" (1/1) ... [2020-10-29 14:43:06,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c385fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06, skipping insertion in model container [2020-10-29 14:43:06,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:43:06" (1/1) ... [2020-10-29 14:43:06,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:43:06,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:43:06,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:43:06,726 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:43:06,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:43:06,805 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:43:06,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06 WrapperNode [2020-10-29 14:43:06,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:43:06,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:43:06,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:43:06,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:43:06,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06" (1/1) ... [2020-10-29 14:43:06,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06" (1/1) ... [2020-10-29 14:43:06,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06" (1/1) ... [2020-10-29 14:43:06,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06" (1/1) ... [2020-10-29 14:43:06,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06" (1/1) ... [2020-10-29 14:43:06,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06" (1/1) ... [2020-10-29 14:43:06,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06" (1/1) ... [2020-10-29 14:43:06,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:43:06,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:43:06,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:43:06,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:43:06,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:43:06,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:43:06,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:43:06,982 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:43:06,982 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-29 14:43:06,984 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-29 14:43:06,984 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-29 14:43:06,984 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-29 14:43:06,985 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-29 14:43:06,985 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-29 14:43:06,986 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-29 14:43:06,987 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-29 14:43:06,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:43:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:43:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:43:06,988 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:43:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:43:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:43:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-29 14:43:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-29 14:43:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-29 14:43:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-29 14:43:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-29 14:43:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:43:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-29 14:43:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-29 14:43:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:43:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:43:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:43:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:43:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:43:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:43:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:43:08,121 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:43:08,122 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 14:43:08,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:43:08 BoogieIcfgContainer [2020-10-29 14:43:08,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:43:08,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:43:08,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:43:08,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:43:08,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:43:06" (1/3) ... [2020-10-29 14:43:08,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7fde6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:43:08, skipping insertion in model container [2020-10-29 14:43:08,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:43:06" (2/3) ... [2020-10-29 14:43:08,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7fde6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:43:08, skipping insertion in model container [2020-10-29 14:43:08,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:43:08" (3/3) ... [2020-10-29 14:43:08,135 INFO L111 eAbstractionObserver]: Analyzing ICFG toy.cil.c [2020-10-29 14:43:08,148 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:43:08,154 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:43:08,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:43:08,203 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:43:08,203 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:43:08,203 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:43:08,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:43:08,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:43:08,204 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:43:08,204 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:43:08,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:43:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-10-29 14:43:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 14:43:08,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:08,241 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] [2020-10-29 14:43:08,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:08,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:08,249 INFO L82 PathProgramCache]: Analyzing trace with hash 771262890, now seen corresponding path program 1 times [2020-10-29 14:43:08,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:08,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029048610] [2020-10-29 14:43:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:08,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:08,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:10,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:13,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:13,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 14:43:13,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:43:13,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:43:13,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:13,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:43:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:43:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 14:43:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:43:13,793 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:13,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:13,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:13,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:13,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:43:13,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:13,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:13,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:13,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029048610] [2020-10-29 14:43:13,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:13,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:43:13,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727610360] [2020-10-29 14:43:13,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:43:13,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:13,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:43:13,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:43:13,872 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 4 states. [2020-10-29 14:43:14,076 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:15,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:15,170 INFO L93 Difference]: Finished difference Result 446 states and 772 transitions. [2020-10-29 14:43:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:43:15,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-29 14:43:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:15,187 INFO L225 Difference]: With dead ends: 446 [2020-10-29 14:43:15,188 INFO L226 Difference]: Without dead ends: 291 [2020-10-29 14:43:15,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-29 14:43:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 258. [2020-10-29 14:43:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-29 14:43:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 415 transitions. [2020-10-29 14:43:15,282 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 415 transitions. Word has length 48 [2020-10-29 14:43:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:15,283 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 415 transitions. [2020-10-29 14:43:15,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:43:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 415 transitions. [2020-10-29 14:43:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:15,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:15,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:15,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:43:15,289 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:15,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:15,289 INFO L82 PathProgramCache]: Analyzing trace with hash 832652275, now seen corresponding path program 1 times [2020-10-29 14:43:15,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:15,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525001715] [2020-10-29 14:43:15,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:15,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:15,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:17,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:17,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:20,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:20,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:20,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:43:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:43:20,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:20,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 14:43:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 14:43:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:20,525 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:20,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:20,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:20,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:20,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:20,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:43:20,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:20,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:20,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:20,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:20,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:20,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:20,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:43:20,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:20,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:43:20,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:20,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525001715] [2020-10-29 14:43:20,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:20,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:20,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176811649] [2020-10-29 14:43:20,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:20,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:20,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:20,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:20,603 INFO L87 Difference]: Start difference. First operand 258 states and 415 transitions. Second operand 5 states. [2020-10-29 14:43:20,754 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:22,225 INFO L93 Difference]: Finished difference Result 800 states and 1312 transitions. [2020-10-29 14:43:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:43:22,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:43:22,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:22,232 INFO L225 Difference]: With dead ends: 800 [2020-10-29 14:43:22,232 INFO L226 Difference]: Without dead ends: 577 [2020-10-29 14:43:22,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:22,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-29 14:43:22,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 477. [2020-10-29 14:43:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-29 14:43:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 777 transitions. [2020-10-29 14:43:22,323 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 777 transitions. Word has length 62 [2020-10-29 14:43:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:22,324 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 777 transitions. [2020-10-29 14:43:22,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 777 transitions. [2020-10-29 14:43:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 14:43:22,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:22,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:22,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:43:22,330 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:22,330 INFO L82 PathProgramCache]: Analyzing trace with hash -212225741, now seen corresponding path program 1 times [2020-10-29 14:43:22,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:22,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370129350] [2020-10-29 14:43:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:22,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:27,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:27,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 14:43:27,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:43:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:43:27,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:27,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 14:43:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 14:43:27,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:27,609 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:27,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:27,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:27,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:43:27,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:27,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:27,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:27,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:27,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:27,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:27,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:27,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:27,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 14:43:27,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370129350] [2020-10-29 14:43:27,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:27,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:27,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479959891] [2020-10-29 14:43:27,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:27,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:27,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:27,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:27,674 INFO L87 Difference]: Start difference. First operand 477 states and 777 transitions. Second operand 5 states. [2020-10-29 14:43:27,971 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:29,360 INFO L93 Difference]: Finished difference Result 1490 states and 2453 transitions. [2020-10-29 14:43:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:43:29,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-29 14:43:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:29,369 INFO L225 Difference]: With dead ends: 1490 [2020-10-29 14:43:29,369 INFO L226 Difference]: Without dead ends: 800 [2020-10-29 14:43:29,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:29,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2020-10-29 14:43:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 683. [2020-10-29 14:43:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-29 14:43:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1112 transitions. [2020-10-29 14:43:29,478 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1112 transitions. Word has length 62 [2020-10-29 14:43:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:29,479 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1112 transitions. [2020-10-29 14:43:29,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1112 transitions. [2020-10-29 14:43:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 14:43:29,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:29,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:29,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:43:29,484 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:29,484 INFO L82 PathProgramCache]: Analyzing trace with hash 98613964, now seen corresponding path program 1 times [2020-10-29 14:43:29,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:29,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936397985] [2020-10-29 14:43:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:29,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:29,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:29,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:30,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:34,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:34,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 14:43:34,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:43:34,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:43:34,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:34,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:43:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 14:43:34,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:34,706 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:34,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:34,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:34,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:34,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:34,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:43:34,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:34,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:34,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 14:43:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:34,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:34,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:34,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:34,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:43:34,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:34,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:43:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:34,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 14:43:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:34,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:34,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:43:34,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:34,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:43:34,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:34,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 14:43:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:34,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:43:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:34,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936397985] [2020-10-29 14:43:34,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:34,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:43:34,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130788455] [2020-10-29 14:43:34,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:43:34,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:34,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:43:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:43:34,842 INFO L87 Difference]: Start difference. First operand 683 states and 1112 transitions. Second operand 6 states. [2020-10-29 14:43:35,002 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:36,496 INFO L93 Difference]: Finished difference Result 2407 states and 4097 transitions. [2020-10-29 14:43:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 14:43:36,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-29 14:43:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:36,511 INFO L225 Difference]: With dead ends: 2407 [2020-10-29 14:43:36,511 INFO L226 Difference]: Without dead ends: 1778 [2020-10-29 14:43:36,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:43:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-10-29 14:43:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1294. [2020-10-29 14:43:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1294 states. [2020-10-29 14:43:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 2153 transitions. [2020-10-29 14:43:36,651 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 2153 transitions. Word has length 74 [2020-10-29 14:43:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:36,651 INFO L481 AbstractCegarLoop]: Abstraction has 1294 states and 2153 transitions. [2020-10-29 14:43:36,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:43:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 2153 transitions. [2020-10-29 14:43:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 14:43:36,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:36,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:36,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:43:36,657 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:36,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:36,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1257550743, now seen corresponding path program 1 times [2020-10-29 14:43:36,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:36,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553725281] [2020-10-29 14:43:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:36,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:36,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:41,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 14:43:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:43:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:43:41,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:41,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:43:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 14:43:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:43:41,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:41,854 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:43:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:41,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:41,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:41,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:41,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:41,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:43:41,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:41,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:43:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:43:41,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 14:43:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:42,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:42,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:42,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:43:42,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:42,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 14:43:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:42,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:42,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:42,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:43:42,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:42,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:42,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:42,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 14:43:42,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:42,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:42,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553725281] [2020-10-29 14:43:42,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:42,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:43:42,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209341052] [2020-10-29 14:43:42,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:43:42,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:42,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:43:42,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:43:42,086 INFO L87 Difference]: Start difference. First operand 1294 states and 2153 transitions. Second operand 8 states. [2020-10-29 14:43:42,343 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:45,991 INFO L93 Difference]: Finished difference Result 6232 states and 10907 transitions. [2020-10-29 14:43:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 14:43:45,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-10-29 14:43:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:46,028 INFO L225 Difference]: With dead ends: 6232 [2020-10-29 14:43:46,029 INFO L226 Difference]: Without dead ends: 5031 [2020-10-29 14:43:46,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:43:46,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2020-10-29 14:43:46,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 2905. [2020-10-29 14:43:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2905 states. [2020-10-29 14:43:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 4961 transitions. [2020-10-29 14:43:46,394 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 4961 transitions. Word has length 77 [2020-10-29 14:43:46,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:46,394 INFO L481 AbstractCegarLoop]: Abstraction has 2905 states and 4961 transitions. [2020-10-29 14:43:46,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:43:46,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 4961 transitions. [2020-10-29 14:43:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 14:43:46,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:46,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:46,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:43:46,415 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:46,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:46,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1305093186, now seen corresponding path program 1 times [2020-10-29 14:43:46,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:46,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195430222] [2020-10-29 14:43:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:47,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:47,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:51,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 14:43:51,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:43:51,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:43:51,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:51,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:43:51,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 14:43:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:43:51,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:43:51,638 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:51,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:51,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:43:51,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:51,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:51,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:51,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:51,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:43:51,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:51,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:43:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:43:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 14:43:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:51,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:43:51,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:43:51,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:51,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 14:43:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:51,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195430222] [2020-10-29 14:43:51,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:51,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:43:51,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207603949] [2020-10-29 14:43:51,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:43:51,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:51,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:43:51,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:51,755 INFO L87 Difference]: Start difference. First operand 2905 states and 4961 transitions. Second operand 7 states. [2020-10-29 14:43:51,928 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:54,894 INFO L93 Difference]: Finished difference Result 12843 states and 22857 transitions. [2020-10-29 14:43:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 14:43:54,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-29 14:43:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:54,980 INFO L225 Difference]: With dead ends: 12843 [2020-10-29 14:43:54,980 INFO L226 Difference]: Without dead ends: 10110 [2020-10-29 14:43:55,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-10-29 14:43:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10110 states. [2020-10-29 14:43:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 5822. [2020-10-29 14:43:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5822 states. [2020-10-29 14:43:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5822 states to 5822 states and 10054 transitions. [2020-10-29 14:43:55,845 INFO L78 Accepts]: Start accepts. Automaton has 5822 states and 10054 transitions. Word has length 70 [2020-10-29 14:43:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:55,845 INFO L481 AbstractCegarLoop]: Abstraction has 5822 states and 10054 transitions. [2020-10-29 14:43:55,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:43:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 5822 states and 10054 transitions. [2020-10-29 14:43:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 14:43:55,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:55,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:55,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:43:55,899 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:55,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:55,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1506917120, now seen corresponding path program 1 times [2020-10-29 14:43:55,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:55,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124508134] [2020-10-29 14:43:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:55,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:55,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:59,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 14:43:59,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:43:59,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3263 [2020-10-29 14:43:59,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:59,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:43:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 14:43:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:59,347 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:59,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:59,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:59,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:43:59,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:59,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:59,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:59,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:59,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:43:59,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:59,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:59,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 14:43:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:59,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:43:59,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:43:59,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:59,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 14:43:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:59,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:43:59,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124508134] [2020-10-29 14:43:59,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:59,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:43:59,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762076530] [2020-10-29 14:43:59,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:43:59,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:59,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:43:59,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:43:59,434 INFO L87 Difference]: Start difference. First operand 5822 states and 10054 transitions. Second operand 6 states. [2020-10-29 14:43:59,601 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:44:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:01,328 INFO L93 Difference]: Finished difference Result 14590 states and 24941 transitions. [2020-10-29 14:44:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 14:44:01,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-29 14:44:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:01,411 INFO L225 Difference]: With dead ends: 14590 [2020-10-29 14:44:01,411 INFO L226 Difference]: Without dead ends: 9051 [2020-10-29 14:44:01,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:44:01,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9051 states. [2020-10-29 14:44:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9051 to 6093. [2020-10-29 14:44:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6093 states. [2020-10-29 14:44:02,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 10482 transitions. [2020-10-29 14:44:02,206 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 10482 transitions. Word has length 70 [2020-10-29 14:44:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:02,209 INFO L481 AbstractCegarLoop]: Abstraction has 6093 states and 10482 transitions. [2020-10-29 14:44:02,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:44:02,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 10482 transitions. [2020-10-29 14:44:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 14:44:02,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:02,254 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:02,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:44:02,254 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:02,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:02,255 INFO L82 PathProgramCache]: Analyzing trace with hash -859777474, now seen corresponding path program 1 times [2020-10-29 14:44:02,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:02,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112083104] [2020-10-29 14:44:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 14:44:04,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:44:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1806 [2020-10-29 14:44:04,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 14:44:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 14:44:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,236 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:04,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:04,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:44:04,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:44:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:04,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:04,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 14:44:04,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 14:44:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:44:04,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:44:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:44:04,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:44:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:44:04,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112083104] [2020-10-29 14:44:04,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:44:04,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 14:44:04,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219975981] [2020-10-29 14:44:04,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:44:04,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:04,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:44:04,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:44:04,331 INFO L87 Difference]: Start difference. First operand 6093 states and 10482 transitions. Second operand 6 states. [2020-10-29 14:44:04,953 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:06,971 INFO L93 Difference]: Finished difference Result 18403 states and 32662 transitions. [2020-10-29 14:44:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 14:44:06,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-29 14:44:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:07,042 INFO L225 Difference]: With dead ends: 18403 [2020-10-29 14:44:07,042 INFO L226 Difference]: Without dead ends: 14562 [2020-10-29 14:44:07,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:44:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14562 states. [2020-10-29 14:44:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14562 to 9563. [2020-10-29 14:44:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9563 states. [2020-10-29 14:44:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9563 states to 9563 states and 16811 transitions. [2020-10-29 14:44:08,162 INFO L78 Accepts]: Start accepts. Automaton has 9563 states and 16811 transitions. Word has length 70 [2020-10-29 14:44:08,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:08,162 INFO L481 AbstractCegarLoop]: Abstraction has 9563 states and 16811 transitions. [2020-10-29 14:44:08,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:44:08,163 INFO L276 IsEmpty]: Start isEmpty. Operand 9563 states and 16811 transitions. [2020-10-29 14:44:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 14:44:08,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:08,242 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:08,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:44:08,242 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:08,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:08,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1195464699, now seen corresponding path program 1 times [2020-10-29 14:44:08,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:08,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744448382] [2020-10-29 14:44:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:08,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:10,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:13,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:13,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 14:44:13,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:44:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:44:13,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:13,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 14:44:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 14:44:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:13,441 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:13,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:13,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:13,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:13,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:44:13,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:13,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:13,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 14:44:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:13,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:13,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:13,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:13,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:13,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:13,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:44:13,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:13,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 14:44:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:13,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:13,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:44:13,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:13,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:13,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 14:44:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 14:44:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:13,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:13,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:13,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:13,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:13,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:13,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:13,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:13,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:44:13,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:13,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 14:44:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:13,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:13,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:44:13,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:13,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:13,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:44:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:13,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 14:44:13,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744448382] [2020-10-29 14:44:13,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:44:13,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:44:13,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488039815] [2020-10-29 14:44:13,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:44:13,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:13,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:44:13,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:44:13,558 INFO L87 Difference]: Start difference. First operand 9563 states and 16811 transitions. Second operand 6 states. [2020-10-29 14:44:14,001 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:44:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:16,577 INFO L93 Difference]: Finished difference Result 21556 states and 37927 transitions. [2020-10-29 14:44:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 14:44:16,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-29 14:44:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:16,663 INFO L225 Difference]: With dead ends: 21556 [2020-10-29 14:44:16,664 INFO L226 Difference]: Without dead ends: 12511 [2020-10-29 14:44:16,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:44:16,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12511 states. [2020-10-29 14:44:17,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12511 to 9442. [2020-10-29 14:44:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9442 states. [2020-10-29 14:44:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9442 states to 9442 states and 15830 transitions. [2020-10-29 14:44:17,727 INFO L78 Accepts]: Start accepts. Automaton has 9442 states and 15830 transitions. Word has length 103 [2020-10-29 14:44:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:17,728 INFO L481 AbstractCegarLoop]: Abstraction has 9442 states and 15830 transitions. [2020-10-29 14:44:17,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:44:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 9442 states and 15830 transitions. [2020-10-29 14:44:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 14:44:17,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:17,791 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:17,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:44:17,792 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash 27727325, now seen corresponding path program 1 times [2020-10-29 14:44:17,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:17,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496883727] [2020-10-29 14:44:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:17,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:17,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:17,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:22,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:22,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 14:44:22,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 14:44:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:44:22,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:22,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 14:44:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 14:44:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:22,972 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:22,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:22,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:22,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:22,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:22,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:22,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:23,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:44:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:23,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:23,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 14:44:23,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:44:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 14:44:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:23,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 14:44:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:44:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:23,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:23,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:23,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 14:44:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:23,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:23,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:23,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:23,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:44:23,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:23,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:23,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:23,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:23,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:23,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:23,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 14:44:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:23,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:23,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:44:23,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:23,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:23,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:23,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:23,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:23,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:23,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:23,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:23,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 14:44:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:23,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:23,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:23,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:23,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:23,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:23,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:23,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:23,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:23,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:23,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 14:44:23,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496883727] [2020-10-29 14:44:23,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:44:23,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:44:23,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666569838] [2020-10-29 14:44:23,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:44:23,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:23,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:44:23,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:44:23,214 INFO L87 Difference]: Start difference. First operand 9442 states and 15830 transitions. Second operand 8 states. [2020-10-29 14:44:23,363 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:44:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:25,393 INFO L93 Difference]: Finished difference Result 23809 states and 39644 transitions. [2020-10-29 14:44:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:44:25,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 130 [2020-10-29 14:44:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:25,496 INFO L225 Difference]: With dead ends: 23809 [2020-10-29 14:44:25,496 INFO L226 Difference]: Without dead ends: 14618 [2020-10-29 14:44:25,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-29 14:44:25,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14618 states. [2020-10-29 14:44:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14618 to 9553. [2020-10-29 14:44:26,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9553 states. [2020-10-29 14:44:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9553 states to 9553 states and 16019 transitions. [2020-10-29 14:44:26,474 INFO L78 Accepts]: Start accepts. Automaton has 9553 states and 16019 transitions. Word has length 130 [2020-10-29 14:44:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:26,474 INFO L481 AbstractCegarLoop]: Abstraction has 9553 states and 16019 transitions. [2020-10-29 14:44:26,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:44:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 9553 states and 16019 transitions. [2020-10-29 14:44:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 14:44:26,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:26,522 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:26,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:44:26,522 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash -44659233, now seen corresponding path program 1 times [2020-10-29 14:44:26,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:26,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438116120] [2020-10-29 14:44:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:27,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:27,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:31,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:31,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 14:44:31,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:44:31,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:44:31,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:31,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 14:44:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 14:44:31,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:31,702 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:31,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:31,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:31,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:31,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:31,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:31,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:44:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:31,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:31,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 14:44:31,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:44:31,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 14:44:31,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:31,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 14:44:31,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:31,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:44:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:31,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:31,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:31,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:31,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:31,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:31,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 14:44:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:31,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:31,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:31,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:31,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 14:44:31,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 14:44:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:31,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:31,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:31,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:44:31,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:31,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:31,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:44:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 14:44:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:31,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:31,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:31,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:44:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 14:44:31,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438116120] [2020-10-29 14:44:31,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:44:31,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:44:31,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273530954] [2020-10-29 14:44:31,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:44:31,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:31,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:44:31,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:44:31,944 INFO L87 Difference]: Start difference. First operand 9553 states and 16019 transitions. Second operand 8 states. [2020-10-29 14:44:32,251 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:35,418 INFO L93 Difference]: Finished difference Result 32368 states and 56151 transitions. [2020-10-29 14:44:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:44:35,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 130 [2020-10-29 14:44:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:35,615 INFO L225 Difference]: With dead ends: 32368 [2020-10-29 14:44:35,615 INFO L226 Difference]: Without dead ends: 23419 [2020-10-29 14:44:35,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-29 14:44:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23419 states. [2020-10-29 14:44:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23419 to 16456. [2020-10-29 14:44:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16456 states. [2020-10-29 14:44:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16456 states to 16456 states and 27929 transitions. [2020-10-29 14:44:37,460 INFO L78 Accepts]: Start accepts. Automaton has 16456 states and 27929 transitions. Word has length 130 [2020-10-29 14:44:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:37,460 INFO L481 AbstractCegarLoop]: Abstraction has 16456 states and 27929 transitions. [2020-10-29 14:44:37,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:44:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 16456 states and 27929 transitions. [2020-10-29 14:44:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 14:44:37,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:37,574 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:37,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:44:37,574 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:37,575 INFO L82 PathProgramCache]: Analyzing trace with hash -283626324, now seen corresponding path program 1 times [2020-10-29 14:44:37,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:37,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996423743] [2020-10-29 14:44:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:38,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:42,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:42,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 14:44:42,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:44:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:44:42,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:42,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 14:44:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 14:44:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:42,764 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:42,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:42,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:42,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:42,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:42,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:44:42,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:42,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:42,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:42,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:42,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:42,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:44:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:42,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:42,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:42,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:42,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 14:44:42,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:44:42,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 14:44:42,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:42,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:44:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 14:44:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:42,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:44:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:42,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:42,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:42,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:42,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:42,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:42,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:44:42,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 14:44:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:42,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:42,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:44:42,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:42,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:42,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:42,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:44:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:44:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:42,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:42,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:42,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:42,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:42,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:42,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:42,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:44:42,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 14:44:43,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996423743] [2020-10-29 14:44:43,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:44:43,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:44:43,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786768229] [2020-10-29 14:44:43,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:44:43,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:43,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:44:43,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:44:43,008 INFO L87 Difference]: Start difference. First operand 16456 states and 27929 transitions. Second operand 8 states. [2020-10-29 14:44:43,189 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:46,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:46,692 INFO L93 Difference]: Finished difference Result 47962 states and 85168 transitions. [2020-10-29 14:44:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 14:44:46,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-29 14:44:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:46,980 INFO L225 Difference]: With dead ends: 47962 [2020-10-29 14:44:46,981 INFO L226 Difference]: Without dead ends: 31614 [2020-10-29 14:44:47,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-10-29 14:44:47,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31614 states. [2020-10-29 14:44:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31614 to 17860. [2020-10-29 14:44:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17860 states. [2020-10-29 14:44:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17860 states to 17860 states and 30248 transitions. [2020-10-29 14:44:49,810 INFO L78 Accepts]: Start accepts. Automaton has 17860 states and 30248 transitions. Word has length 123 [2020-10-29 14:44:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:49,810 INFO L481 AbstractCegarLoop]: Abstraction has 17860 states and 30248 transitions. [2020-10-29 14:44:49,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:44:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 17860 states and 30248 transitions. [2020-10-29 14:44:49,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 14:44:49,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:49,898 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:49,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:44:49,898 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:49,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:49,899 INFO L82 PathProgramCache]: Analyzing trace with hash 356293608, now seen corresponding path program 1 times [2020-10-29 14:44:49,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:49,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005720396] [2020-10-29 14:44:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:50,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:50,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:50,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:50,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:54,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:54,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 14:44:54,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:44:54,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4514 [2020-10-29 14:44:54,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:54,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 14:44:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:44:54,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:54,586 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:54,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:54,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:54,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:54,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:54,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:54,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:54,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:54,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:54,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:54,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:54,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:54,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:44:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:54,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:54,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:54,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 14:44:54,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:44:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 14:44:54,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:54,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 14:44:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:44:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:54,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:54,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:54,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:54,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:44:54,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:54,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:54,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 14:44:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:44:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:44:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:54,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:54,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:54,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:54,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:54,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:54,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:44:54,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 14:44:54,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005720396] [2020-10-29 14:44:54,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:44:54,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:44:54,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802904477] [2020-10-29 14:44:54,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:44:54,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:54,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:44:54,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:44:54,789 INFO L87 Difference]: Start difference. First operand 17860 states and 30248 transitions. Second operand 7 states. [2020-10-29 14:44:54,956 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:57,717 INFO L93 Difference]: Finished difference Result 40014 states and 67245 transitions. [2020-10-29 14:44:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 14:44:57,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-29 14:44:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:57,843 INFO L225 Difference]: With dead ends: 40014 [2020-10-29 14:44:57,843 INFO L226 Difference]: Without dead ends: 22294 [2020-10-29 14:44:58,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:44:58,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22294 states. [2020-10-29 14:44:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22294 to 17860. [2020-10-29 14:44:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17860 states. [2020-10-29 14:44:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17860 states to 17860 states and 30060 transitions. [2020-10-29 14:44:59,688 INFO L78 Accepts]: Start accepts. Automaton has 17860 states and 30060 transitions. Word has length 123 [2020-10-29 14:44:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:59,688 INFO L481 AbstractCegarLoop]: Abstraction has 17860 states and 30060 transitions. [2020-10-29 14:44:59,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:44:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 17860 states and 30060 transitions. [2020-10-29 14:44:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 14:44:59,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:59,768 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:59,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:44:59,768 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:59,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1431879535, now seen corresponding path program 1 times [2020-10-29 14:44:59,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:59,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870174824] [2020-10-29 14:44:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:04,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:04,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 14:45:04,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:45:04,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4268 [2020-10-29 14:45:04,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:04,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:04,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:45:04,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 14:45:04,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 14:45:04,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:04,232 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:04,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:04,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:04,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:04,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:45:04,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:04,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:04,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:45:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:04,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:04,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 14:45:04,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:45:04,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:04,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:45:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 14:45:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:04,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:45:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:04,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:04,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:04,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:04,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:04,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:04,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:45:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:04,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 14:45:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:04,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:04,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:04,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:04,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:04,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:45:04,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:04,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 14:45:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:04,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:04,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:04,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:04,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:04,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:04,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:45:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 14:45:04,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870174824] [2020-10-29 14:45:04,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:45:04,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:45:04,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930063222] [2020-10-29 14:45:04,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:45:04,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:04,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:45:04,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:45:04,428 INFO L87 Difference]: Start difference. First operand 17860 states and 30060 transitions. Second operand 8 states. [2020-10-29 14:45:04,605 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:45:08,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:45:08,161 INFO L93 Difference]: Finished difference Result 40719 states and 67043 transitions. [2020-10-29 14:45:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:45:08,161 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-29 14:45:08,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:45:08,312 INFO L225 Difference]: With dead ends: 40719 [2020-10-29 14:45:08,312 INFO L226 Difference]: Without dead ends: 22868 [2020-10-29 14:45:08,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-10-29 14:45:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22868 states. [2020-10-29 14:45:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22868 to 18854. [2020-10-29 14:45:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18854 states. [2020-10-29 14:45:10,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18854 states to 18854 states and 30631 transitions. [2020-10-29 14:45:10,303 INFO L78 Accepts]: Start accepts. Automaton has 18854 states and 30631 transitions. Word has length 125 [2020-10-29 14:45:10,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:45:10,304 INFO L481 AbstractCegarLoop]: Abstraction has 18854 states and 30631 transitions. [2020-10-29 14:45:10,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:45:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 18854 states and 30631 transitions. [2020-10-29 14:45:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 14:45:10,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:45:10,399 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:45:10,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:45:10,400 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:45:10,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:45:10,400 INFO L82 PathProgramCache]: Analyzing trace with hash -650456388, now seen corresponding path program 1 times [2020-10-29 14:45:10,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:45:10,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898783718] [2020-10-29 14:45:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:45:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:10,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:10,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:11,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:11,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:15,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:15,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 14:45:15,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:45:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:45:15,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:15,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:45:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:45:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 14:45:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:15,589 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:45:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:15,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:15,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:15,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 14:45:15,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:45:15,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 14:45:15,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:15,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:15,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:45:15,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:15,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 14:45:15,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:15,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:45:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:15,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:15,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:15,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:15,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:15,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:15,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:15,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:45:15,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:15,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 14:45:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:15,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:15,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:15,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:15,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:45:15,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:15,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:45:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 14:45:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:15,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 14:45:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:15,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:15,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:15,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:15,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:15,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:15,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:45:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 14:45:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:16,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:16,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:16,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:16,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:16,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:16,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:16,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:45:16,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:16,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 14:45:16,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898783718] [2020-10-29 14:45:16,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:45:16,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 14:45:16,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965715969] [2020-10-29 14:45:16,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:45:16,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:16,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:45:16,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:45:16,035 INFO L87 Difference]: Start difference. First operand 18854 states and 30631 transitions. Second operand 11 states. [2020-10-29 14:45:16,195 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:45:17,836 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:45:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:45:22,011 INFO L93 Difference]: Finished difference Result 47616 states and 77278 transitions. [2020-10-29 14:45:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 14:45:22,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 135 [2020-10-29 14:45:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:45:22,138 INFO L225 Difference]: With dead ends: 47616 [2020-10-29 14:45:22,138 INFO L226 Difference]: Without dead ends: 32534 [2020-10-29 14:45:22,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2020-10-29 14:45:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32534 states. [2020-10-29 14:45:24,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32534 to 26567. [2020-10-29 14:45:24,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26567 states. [2020-10-29 14:45:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26567 states to 26567 states and 42368 transitions. [2020-10-29 14:45:24,372 INFO L78 Accepts]: Start accepts. Automaton has 26567 states and 42368 transitions. Word has length 135 [2020-10-29 14:45:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:45:24,373 INFO L481 AbstractCegarLoop]: Abstraction has 26567 states and 42368 transitions. [2020-10-29 14:45:24,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 14:45:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 26567 states and 42368 transitions. [2020-10-29 14:45:24,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 14:45:24,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:45:24,470 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:45:24,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:45:24,471 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:45:24,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:45:24,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1671818873, now seen corresponding path program 1 times [2020-10-29 14:45:24,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:45:24,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47289049] [2020-10-29 14:45:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:45:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:24,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:26,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:26,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 14:45:29,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:45:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:45:29,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:45:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 14:45:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 14:45:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,664 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:29,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:29,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:29,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:45:29,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:29,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:45:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:30,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:30,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 14:45:30,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:45:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-29 14:45:30,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:30,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:30,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:45:30,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:30,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 14:45:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:45:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:30,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:30,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:30,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:30,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:30,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:30,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:45:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:30,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 14:45:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:30,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:30,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:45:30,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:30,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:30,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:45:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:30,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:45:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:30,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:30,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:30,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:30,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:45:30,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:30,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:45:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:45:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:30,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 14:45:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:30,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:30,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:30,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:30,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:30,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:30,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:30,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:30,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:30,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:45:30,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:30,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 14:45:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:30,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:30,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:45:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 14:45:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:30,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:30,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:30,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:45:30,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:30,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:45:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 14:45:30,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47289049] [2020-10-29 14:45:30,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:45:30,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 14:45:30,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478906247] [2020-10-29 14:45:30,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:45:30,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:30,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:45:30,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:45:30,236 INFO L87 Difference]: Start difference. First operand 26567 states and 42368 transitions. Second operand 11 states. [2020-10-29 14:45:30,414 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:45:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:45:33,944 INFO L93 Difference]: Finished difference Result 58078 states and 92788 transitions. [2020-10-29 14:45:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:45:33,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 157 [2020-10-29 14:45:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:45:34,073 INFO L225 Difference]: With dead ends: 58078 [2020-10-29 14:45:34,074 INFO L226 Difference]: Without dead ends: 31552 [2020-10-29 14:45:34,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-10-29 14:45:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31552 states. [2020-10-29 14:45:36,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31552 to 26065. [2020-10-29 14:45:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26065 states. [2020-10-29 14:45:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26065 states to 26065 states and 41493 transitions. [2020-10-29 14:45:36,572 INFO L78 Accepts]: Start accepts. Automaton has 26065 states and 41493 transitions. Word has length 157 [2020-10-29 14:45:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:45:36,573 INFO L481 AbstractCegarLoop]: Abstraction has 26065 states and 41493 transitions. [2020-10-29 14:45:36,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 14:45:36,573 INFO L276 IsEmpty]: Start isEmpty. Operand 26065 states and 41493 transitions. [2020-10-29 14:45:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 14:45:36,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:45:36,659 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:45:36,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:45:36,660 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:45:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:45:36,660 INFO L82 PathProgramCache]: Analyzing trace with hash 357515683, now seen corresponding path program 1 times [2020-10-29 14:45:36,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:45:36,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043493500] [2020-10-29 14:45:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:45:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:37,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:40,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 14:45:40,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:45:40,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3376 [2020-10-29 14:45:40,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:40,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 14:45:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:45:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 14:45:40,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:40,434 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:40,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:40,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:40,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:40,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:45:40,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:40,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:40,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:45:40,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:40,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:45:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:40,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 14:45:40,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:45:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 14:45:40,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:40,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:45:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 14:45:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:40,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:45:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:40,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:40,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:40,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:40,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:40,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:45:40,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:45:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:40,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:40,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:45:40,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:40,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:45:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:45:40,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 14:45:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:40,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:40,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:40,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:40,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:45:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:45:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:40,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-29 14:45:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:40,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:40,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:40,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:40,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:40,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:40,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:45:40,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:40,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:40,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 14:45:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:40,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:40,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:40,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:40,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:40,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:40,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:45:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 14:45:40,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043493500] [2020-10-29 14:45:40,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:45:40,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 14:45:40,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597964065] [2020-10-29 14:45:40,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 14:45:40,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:40,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 14:45:40,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-29 14:45:40,834 INFO L87 Difference]: Start difference. First operand 26065 states and 41493 transitions. Second operand 13 states. [2020-10-29 14:45:41,182 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-29 14:45:42,259 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-29 14:45:42,537 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 14:45:44,969 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 119 [2020-10-29 14:45:47,319 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-29 14:45:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:45:57,276 INFO L93 Difference]: Finished difference Result 121598 states and 198661 transitions. [2020-10-29 14:45:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-29 14:45:57,277 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 149 [2020-10-29 14:45:57,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:45:57,832 INFO L225 Difference]: With dead ends: 121598 [2020-10-29 14:45:57,832 INFO L226 Difference]: Without dead ends: 104547 [2020-10-29 14:45:57,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=798, Invalid=3108, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 14:45:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104547 states. [2020-10-29 14:46:06,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104547 to 83930. [2020-10-29 14:46:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83930 states. [2020-10-29 14:46:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83930 states to 83930 states and 136510 transitions. [2020-10-29 14:46:07,028 INFO L78 Accepts]: Start accepts. Automaton has 83930 states and 136510 transitions. Word has length 149 [2020-10-29 14:46:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:46:07,029 INFO L481 AbstractCegarLoop]: Abstraction has 83930 states and 136510 transitions. [2020-10-29 14:46:07,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 14:46:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 83930 states and 136510 transitions. [2020-10-29 14:46:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 14:46:07,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:46:07,795 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:46:07,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 14:46:07,795 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:46:07,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:46:07,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1201435258, now seen corresponding path program 1 times [2020-10-29 14:46:07,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:46:07,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510712843] [2020-10-29 14:46:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:46:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:07,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:07,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:08,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:08,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:12,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:12,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 14:46:12,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:46:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:46:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:12,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:46:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 14:46:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 14:46:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:46:12,983 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:46:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:46:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:12,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:12,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:12,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:46:12,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:46:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:46:12,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:12,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:46:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:46:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:46:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:46:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:46:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:13,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:13,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 14:46:13,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:46:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-29 14:46:13,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:13,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:46:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:46:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 14:46:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:46:13,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:46:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:13,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:46:13,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:46:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:46:13,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:13,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:46:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:46:13,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:46:13,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:46:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 14:46:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:13,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:13,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:46:13,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:46:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:46:13,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:13,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:46:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:46:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:46:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:46:13,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:46:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:13,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:13,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:46:13,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:46:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:46:13,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:13,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:46:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:46:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:46:13,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:46:13,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 14:46:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:13,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 14:46:13,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:46:13,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:46:13,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:13,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:46:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:46:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 14:46:13,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:46:13,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 14:46:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:13,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:46:13,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:46:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:46:13,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:13,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:46:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:46:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:46:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:46:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 14:46:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:13,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:46:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:46:13,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 14:46:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:46:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:46:13,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:46:13,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:46:13,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:46:13,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:46:13,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:46:13,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:46:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:46:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:46:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:46:13,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:46:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 39 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 14:46:13,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510712843] [2020-10-29 14:46:13,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:46:13,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 14:46:13,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267967001] [2020-10-29 14:46:13,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:46:13,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:46:13,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:46:13,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:46:13,824 INFO L87 Difference]: Start difference. First operand 83930 states and 136510 transitions. Second operand 11 states. [2020-10-29 14:46:13,993 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 14:46:15,973 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 120