/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=DEEPEST --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/eca-rers2012/Problem16_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:40:29,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:40:29,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:40:29,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:40:29,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:40:29,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:40:29,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:40:29,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:40:29,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:40:29,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:40:29,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:40:29,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:40:29,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:40:29,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:40:29,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:40:29,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:40:29,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:40:29,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:40:29,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:40:29,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:40:29,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:40:29,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:40:29,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:40:29,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:40:29,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:40:29,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:40:29,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:40:29,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:40:29,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:40:29,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:40:29,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:40:29,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:40:29,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:40:29,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:40:29,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:40:29,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:40:29,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:40:29,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:40:29,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:40:29,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:40:29,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:40:29,888 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 [2020-10-27 18:40:29,914 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:40:29,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:40:29,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:40:29,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:40:29,917 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:40:29,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:40:29,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:40:29,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:40:29,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:40:29,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:40:29,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:40:29,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:40:29,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:40:29,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:40:29,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:40:29,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:40:29,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:40:29,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:40:29,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:40:29,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:40:29,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:40:29,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:40:29,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:40:29,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:40:29,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:40:29,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:40:29,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:40:29,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:40:29,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:40:29,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:40:30,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:40:30,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:40:30,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:40:30,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:40:30,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:40:30,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label29.c [2020-10-27 18:40:30,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4775d60d6/01f62ffcab8c4e90b022cee58e2e091f/FLAGbb6bce1d1 [2020-10-27 18:40:31,432 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:40:31,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label29.c [2020-10-27 18:40:31,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4775d60d6/01f62ffcab8c4e90b022cee58e2e091f/FLAGbb6bce1d1 [2020-10-27 18:40:31,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4775d60d6/01f62ffcab8c4e90b022cee58e2e091f [2020-10-27 18:40:31,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:40:31,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:40:31,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:40:31,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:40:31,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:40:31,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:40:31" (1/1) ... [2020-10-27 18:40:31,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a624960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:31, skipping insertion in model container [2020-10-27 18:40:31,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:40:31" (1/1) ... [2020-10-27 18:40:31,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:40:31,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:40:32,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:40:32,383 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:40:32,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:40:32,647 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:40:32,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32 WrapperNode [2020-10-27 18:40:32,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:40:32,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:40:32,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:40:32,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:40:32,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32" (1/1) ... [2020-10-27 18:40:32,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32" (1/1) ... [2020-10-27 18:40:32,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32" (1/1) ... [2020-10-27 18:40:32,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32" (1/1) ... [2020-10-27 18:40:32,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32" (1/1) ... [2020-10-27 18:40:32,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32" (1/1) ... [2020-10-27 18:40:32,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32" (1/1) ... [2020-10-27 18:40:32,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:40:32,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:40:32,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:40:32,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:40:32,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32" (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 [2020-10-27 18:40:32,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:40:32,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:40:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:40:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:40:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:40:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:40:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:40:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:40:32,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:40:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:40:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:40:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:40:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:40:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:40:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:40:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:40:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:40:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:40:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:40:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:40:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:40:35,727 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:40:35,728 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:40:35,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:40:35 BoogieIcfgContainer [2020-10-27 18:40:35,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:40:35,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:40:35,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:40:35,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:40:35,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:40:31" (1/3) ... [2020-10-27 18:40:35,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d16c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:40:35, skipping insertion in model container [2020-10-27 18:40:35,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:32" (2/3) ... [2020-10-27 18:40:35,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d16c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:40:35, skipping insertion in model container [2020-10-27 18:40:35,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:40:35" (3/3) ... [2020-10-27 18:40:35,744 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label29.c [2020-10-27 18:40:35,758 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:40:35,766 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:40:35,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:40:35,831 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:40:35,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:40:35,832 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:40:35,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:40:35,832 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:40:35,832 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:40:35,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:40:35,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:40:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:40:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 18:40:35,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:35,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:40:35,875 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:35,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:35,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1859974700, now seen corresponding path program 1 times [2020-10-27 18:40:35,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:35,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064733098] [2020-10-27 18:40:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:36,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:36,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 18:40:36,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-27 18:40:36,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:40:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:40:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 18:40:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:40:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:36,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:36,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:36,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:36,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:40:36,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:40:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:40:36,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064733098] [2020-10-27 18:40:36,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:40:36,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 18:40:36,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343301181] [2020-10-27 18:40:36,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:40:36,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:37,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:40:37,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:40:37,006 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-27 18:40:44,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:44,558 INFO L93 Difference]: Finished difference Result 1520 states and 2855 transitions. [2020-10-27 18:40:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:40:44,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-27 18:40:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:44,600 INFO L225 Difference]: With dead ends: 1520 [2020-10-27 18:40:44,601 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 18:40:44,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:40:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 18:40:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-27 18:40:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-27 18:40:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1486 transitions. [2020-10-27 18:40:44,804 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1486 transitions. Word has length 53 [2020-10-27 18:40:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:44,807 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1486 transitions. [2020-10-27 18:40:44,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:40:44,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1486 transitions. [2020-10-27 18:40:44,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 18:40:44,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:44,823 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:40:44,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:40:44,825 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:44,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:44,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1906577101, now seen corresponding path program 1 times [2020-10-27 18:40:44,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:44,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156331004] [2020-10-27 18:40:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:44,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:46,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:46,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:40:46,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:40:46,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-27 18:40:46,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:40:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 18:40:46,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:40:46,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:46,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:46,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:46,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:46,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:40:46,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:46,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:46,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:40:46,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 18:40:46,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:40:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:40:46,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156331004] [2020-10-27 18:40:46,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:46,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:40:46,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309271660] [2020-10-27 18:40:46,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:40:46,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:46,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:40:46,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:40:46,800 INFO L87 Difference]: Start difference. First operand 1035 states and 1486 transitions. Second operand 5 states. [2020-10-27 18:40:51,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:51,704 INFO L93 Difference]: Finished difference Result 2410 states and 3595 transitions. [2020-10-27 18:40:51,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:40:51,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-27 18:40:51,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:51,718 INFO L225 Difference]: With dead ends: 2410 [2020-10-27 18:40:51,718 INFO L226 Difference]: Without dead ends: 1381 [2020-10-27 18:40:51,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:40:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-27 18:40:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1377. [2020-10-27 18:40:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2020-10-27 18:40:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1901 transitions. [2020-10-27 18:40:51,775 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1901 transitions. Word has length 129 [2020-10-27 18:40:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:51,776 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1901 transitions. [2020-10-27 18:40:51,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:40:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1901 transitions. [2020-10-27 18:40:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-27 18:40:51,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:51,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-27 18:40:51,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:40:51,781 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:51,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:51,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1006057586, now seen corresponding path program 1 times [2020-10-27 18:40:51,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:51,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284853950] [2020-10-27 18:40:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:52,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:56,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:56,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 18:40:56,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:40:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 18:40:56,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 18:40:56,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 18:40:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:57,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:57,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:57,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:57,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:57,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:40:57,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:57,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:57,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:57,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:57,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:40:57,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:57,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:40:57,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:57,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:40:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:57,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:40:57,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 18:40:57,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:40:57,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 18:40:57,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284853950] [2020-10-27 18:40:57,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:57,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:40:57,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881465069] [2020-10-27 18:40:57,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:40:57,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:57,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:40:57,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:40:57,352 INFO L87 Difference]: Start difference. First operand 1377 states and 1901 transitions. Second operand 6 states. [2020-10-27 18:41:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:07,038 INFO L93 Difference]: Finished difference Result 3436 states and 4849 transitions. [2020-10-27 18:41:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:41:07,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2020-10-27 18:41:07,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:07,057 INFO L225 Difference]: With dead ends: 3436 [2020-10-27 18:41:07,057 INFO L226 Difference]: Without dead ends: 2065 [2020-10-27 18:41:07,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:41:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2020-10-27 18:41:07,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2061. [2020-10-27 18:41:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-27 18:41:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2818 transitions. [2020-10-27 18:41:07,159 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2818 transitions. Word has length 239 [2020-10-27 18:41:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:07,163 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2818 transitions. [2020-10-27 18:41:07,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:41:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2818 transitions. [2020-10-27 18:41:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 18:41:07,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:07,177 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:41:07,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:41:07,178 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:07,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:07,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1391245813, now seen corresponding path program 1 times [2020-10-27 18:41:07,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:07,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111019922] [2020-10-27 18:41:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:07,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:10,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:12,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:12,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 18:41:12,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:41:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 18:41:12,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 18:41:12,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:41:12,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:12,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:12,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:12,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:41:12,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:12,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:12,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:41:12,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:12,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:41:12,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:12,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:41:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:12,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:12,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:41:12,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:12,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:41:12,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:12,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:12,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:12,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:41:12,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 18:41:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:12,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:12,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:41:12,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:12,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 18:41:12,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:12,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:12,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:12,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:41:12,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 18:41:12,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111019922] [2020-10-27 18:41:12,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:12,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:41:12,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162267756] [2020-10-27 18:41:12,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:41:12,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:12,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:41:12,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:41:12,896 INFO L87 Difference]: Start difference. First operand 2061 states and 2818 transitions. Second operand 7 states. [2020-10-27 18:41:21,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:21,210 INFO L93 Difference]: Finished difference Result 5188 states and 7257 transitions. [2020-10-27 18:41:21,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:41:21,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-27 18:41:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:21,231 INFO L225 Difference]: With dead ends: 5188 [2020-10-27 18:41:21,232 INFO L226 Difference]: Without dead ends: 3133 [2020-10-27 18:41:21,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:41:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-27 18:41:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 2777. [2020-10-27 18:41:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2777 states. [2020-10-27 18:41:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 3819 transitions. [2020-10-27 18:41:21,354 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 3819 transitions. Word has length 311 [2020-10-27 18:41:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:21,355 INFO L481 AbstractCegarLoop]: Abstraction has 2777 states and 3819 transitions. [2020-10-27 18:41:21,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:41:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 3819 transitions. [2020-10-27 18:41:21,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-27 18:41:21,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:21,363 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:41:21,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:41:21,363 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:21,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:21,364 INFO L82 PathProgramCache]: Analyzing trace with hash 534442035, now seen corresponding path program 1 times [2020-10-27 18:41:21,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:21,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367670249] [2020-10-27 18:41:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:21,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:21,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:24,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:26,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:26,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-27 18:41:26,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:41:26,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 18:41:26,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:26,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:26,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 18:41:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 18:41:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:41:26,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:26,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:26,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:26,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:26,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:26,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:41:26,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:26,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:26,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:26,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:26,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:41:26,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:41:26,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:41:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:26,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:26,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:41:26,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 18:41:26,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:41:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 18:41:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:26,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:26,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 18:41:26,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 18:41:26,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 18:41:26,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 18:41:27,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367670249] [2020-10-27 18:41:27,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:27,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:41:27,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817756575] [2020-10-27 18:41:27,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:41:27,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:27,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:41:27,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:41:27,129 INFO L87 Difference]: Start difference. First operand 2777 states and 3819 transitions. Second operand 7 states. [2020-10-27 18:41:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:33,383 INFO L93 Difference]: Finished difference Result 8342 states and 11731 transitions. [2020-10-27 18:41:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:41:33,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-27 18:41:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:33,424 INFO L225 Difference]: With dead ends: 8342 [2020-10-27 18:41:33,424 INFO L226 Difference]: Without dead ends: 5571 [2020-10-27 18:41:33,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:41:33,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5571 states. [2020-10-27 18:41:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5571 to 4867. [2020-10-27 18:41:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4867 states. [2020-10-27 18:41:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 6243 transitions. [2020-10-27 18:41:33,610 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 6243 transitions. Word has length 331 [2020-10-27 18:41:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:33,611 INFO L481 AbstractCegarLoop]: Abstraction has 4867 states and 6243 transitions. [2020-10-27 18:41:33,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:41:33,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 6243 transitions. [2020-10-27 18:41:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-27 18:41:33,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:33,628 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:41:33,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:41:33,629 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:33,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:33,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1153165491, now seen corresponding path program 1 times [2020-10-27 18:41:33,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:33,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13973688] [2020-10-27 18:41:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:33,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:34,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:38,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:38,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-27 18:41:38,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:41:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 18:41:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:41:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:41:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:38,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:38,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:38,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:38,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:41:38,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:38,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:41:38,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:39,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:39,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:41:39,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:41:39,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:39,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:41:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:39,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:39,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:41:39,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:39,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 18:41:39,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:39,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:41:39,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:41:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:39,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:39,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:39,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:41:39,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 18:41:39,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:39,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 18:41:39,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:41:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:41:40,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13973688] [2020-10-27 18:41:40,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:40,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:41:40,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900222436] [2020-10-27 18:41:40,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:41:40,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:40,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:41:40,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:41:40,047 INFO L87 Difference]: Start difference. First operand 4867 states and 6243 transitions. Second operand 7 states. [2020-10-27 18:41:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:47,215 INFO L93 Difference]: Finished difference Result 11465 states and 15095 transitions. [2020-10-27 18:41:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:41:47,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 518 [2020-10-27 18:41:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:47,257 INFO L225 Difference]: With dead ends: 11465 [2020-10-27 18:41:47,258 INFO L226 Difference]: Without dead ends: 6604 [2020-10-27 18:41:47,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:41:47,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2020-10-27 18:41:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 6579. [2020-10-27 18:41:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6579 states. [2020-10-27 18:41:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6579 states to 6579 states and 8059 transitions. [2020-10-27 18:41:47,469 INFO L78 Accepts]: Start accepts. Automaton has 6579 states and 8059 transitions. Word has length 518 [2020-10-27 18:41:47,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:47,470 INFO L481 AbstractCegarLoop]: Abstraction has 6579 states and 8059 transitions. [2020-10-27 18:41:47,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:41:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 6579 states and 8059 transitions. [2020-10-27 18:41:47,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-27 18:41:47,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:47,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:41:47,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:41:47,493 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:47,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:47,494 INFO L82 PathProgramCache]: Analyzing trace with hash 716484574, now seen corresponding path program 1 times [2020-10-27 18:41:47,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:47,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001186547] [2020-10-27 18:41:47,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:47,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:52,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:52,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-27 18:41:52,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:41:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 18:41:52,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:41:52,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:41:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:52,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:52,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:52,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:52,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:41:52,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:52,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:52,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:52,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:41:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:41:52,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:52,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:41:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:52,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:52,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:52,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:41:52,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:52,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 18:41:52,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:52,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:41:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:52,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:41:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:52,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:53,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:53,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:41:53,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 18:41:53,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:41:53,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:41:53,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-27 18:41:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:53,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:53,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:41:53,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 18:41:53,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:41:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 361 proven. 109 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-10-27 18:41:53,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001186547] [2020-10-27 18:41:53,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:53,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:41:53,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827404151] [2020-10-27 18:41:53,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:41:53,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:53,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:41:53,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:41:53,730 INFO L87 Difference]: Start difference. First operand 6579 states and 8059 transitions. Second operand 8 states. [2020-10-27 18:42:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:03,837 INFO L93 Difference]: Finished difference Result 19981 states and 25148 transitions. [2020-10-27 18:42:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:42:03,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 555 [2020-10-27 18:42:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:03,913 INFO L225 Difference]: With dead ends: 19981 [2020-10-27 18:42:03,913 INFO L226 Difference]: Without dead ends: 13408 [2020-10-27 18:42:03,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-27 18:42:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2020-10-27 18:42:04,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 13067. [2020-10-27 18:42:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13067 states. [2020-10-27 18:42:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13067 states to 13067 states and 16193 transitions. [2020-10-27 18:42:04,304 INFO L78 Accepts]: Start accepts. Automaton has 13067 states and 16193 transitions. Word has length 555 [2020-10-27 18:42:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:04,305 INFO L481 AbstractCegarLoop]: Abstraction has 13067 states and 16193 transitions. [2020-10-27 18:42:04,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:42:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 13067 states and 16193 transitions. [2020-10-27 18:42:04,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2020-10-27 18:42:04,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:04,350 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:42:04,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:42:04,351 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:04,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:04,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1065907470, now seen corresponding path program 1 times [2020-10-27 18:42:04,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:04,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997906080] [2020-10-27 18:42:04,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:04,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:07,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:09,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:09,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 724 [2020-10-27 18:42:09,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:42:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 18:42:09,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:42:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:42:09,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:09,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:09,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:09,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:09,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:09,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:09,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:42:09,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:09,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:09,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:09,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:09,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:42:09,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:09,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 18:42:09,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:09,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:09,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:09,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:42:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:09,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:10,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:10,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:42:10,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-27 18:42:10,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:42:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:10,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:42:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:10,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:10,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:42:10,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 18:42:10,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:42:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:10,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-27 18:42:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:10,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:10,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:10,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:42:10,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:42:10,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:42:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 329 proven. 70 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2020-10-27 18:42:11,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997906080] [2020-10-27 18:42:11,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:11,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:42:11,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200565637] [2020-10-27 18:42:11,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:42:11,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:11,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:42:11,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:42:11,211 INFO L87 Difference]: Start difference. First operand 13067 states and 16193 transitions. Second operand 7 states. [2020-10-27 18:42:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:18,274 INFO L93 Difference]: Finished difference Result 27199 states and 33811 transitions. [2020-10-27 18:42:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:42:18,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 706 [2020-10-27 18:42:18,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:18,337 INFO L225 Difference]: With dead ends: 27199 [2020-10-27 18:42:18,337 INFO L226 Difference]: Without dead ends: 14138 [2020-10-27 18:42:18,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:42:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14138 states. [2020-10-27 18:42:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14138 to 13775. [2020-10-27 18:42:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13775 states. [2020-10-27 18:42:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13775 states to 13775 states and 17105 transitions. [2020-10-27 18:42:18,732 INFO L78 Accepts]: Start accepts. Automaton has 13775 states and 17105 transitions. Word has length 706 [2020-10-27 18:42:18,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:18,733 INFO L481 AbstractCegarLoop]: Abstraction has 13775 states and 17105 transitions. [2020-10-27 18:42:18,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:42:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 13775 states and 17105 transitions. [2020-10-27 18:42:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2020-10-27 18:42:18,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:18,776 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:42:18,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:42:18,776 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:18,777 INFO L82 PathProgramCache]: Analyzing trace with hash 875234399, now seen corresponding path program 1 times [2020-10-27 18:42:18,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:18,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550040639] [2020-10-27 18:42:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:18,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:20,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:23,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:23,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:23,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 763 [2020-10-27 18:42:23,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:42:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 18:42:23,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 18:42:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:42:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:24,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:24,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:24,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:42:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:24,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:24,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:24,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:42:24,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:24,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:42:24,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:24,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:24,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:42:24,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:24,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:42:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:24,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:24,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:42:24,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:42:24,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 18:42:24,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:42:24,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:42:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:24,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:24,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:42:24,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:24,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 18:42:24,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:24,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:24,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:42:24,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:24,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-27 18:42:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:24,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:24,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:24,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:42:24,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:42:24,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 18:42:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:24,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-10-27 18:42:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:24,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:24,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:42:24,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:24,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:42:24,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:24,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:42:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 317 proven. 242 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2020-10-27 18:42:25,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550040639] [2020-10-27 18:42:25,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:25,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:42:25,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727254159] [2020-10-27 18:42:25,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:42:25,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:25,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:42:25,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:42:25,289 INFO L87 Difference]: Start difference. First operand 13775 states and 17105 transitions. Second operand 7 states. [2020-10-27 18:42:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:30,531 INFO L93 Difference]: Finished difference Result 28022 states and 36972 transitions. [2020-10-27 18:42:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:42:30,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 743 [2020-10-27 18:42:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:30,620 INFO L225 Difference]: With dead ends: 28022 [2020-10-27 18:42:30,620 INFO L226 Difference]: Without dead ends: 14145 [2020-10-27 18:42:30,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:42:30,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14145 states. [2020-10-27 18:42:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14145 to 13424. [2020-10-27 18:42:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13424 states. [2020-10-27 18:42:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 16079 transitions. [2020-10-27 18:42:31,093 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 16079 transitions. Word has length 743 [2020-10-27 18:42:31,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:31,093 INFO L481 AbstractCegarLoop]: Abstraction has 13424 states and 16079 transitions. [2020-10-27 18:42:31,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:42:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 16079 transitions. [2020-10-27 18:42:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-27 18:42:31,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:31,122 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:42:31,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:42:31,122 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:31,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1112191197, now seen corresponding path program 1 times [2020-10-27 18:42:31,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:31,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985488781] [2020-10-27 18:42:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:35,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:36,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:36,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-27 18:42:36,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:42:36,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 18:42:36,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 18:42:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-27 18:42:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 388 [2020-10-27 18:42:36,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:36,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:36,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:36,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:42:36,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:36,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:36,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:36,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 18:42:36,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 18:42:36,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-27 18:42:36,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-27 18:42:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:36,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:36,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:36,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:42:36,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:42:36,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 18:42:36,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:42:36,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:36,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:42:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:37,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:37,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:42:37,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:42:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 18:42:37,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 18:42:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:37,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-27 18:42:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:37,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:37,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:37,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:42:37,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:37,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 18:42:37,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:37,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:42:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:37,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-10-27 18:42:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:37,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:37,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:42:37,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:42:37,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:42:37,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 587 proven. 378 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-27 18:42:38,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985488781] [2020-10-27 18:42:38,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:38,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:42:38,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12374957] [2020-10-27 18:42:38,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:42:38,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:38,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:42:38,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:42:38,477 INFO L87 Difference]: Start difference. First operand 13424 states and 16079 transitions. Second operand 8 states. [2020-10-27 18:42:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:44,099 INFO L93 Difference]: Finished difference Result 29263 states and 35021 transitions. [2020-10-27 18:42:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:42:44,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 818 [2020-10-27 18:42:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:44,141 INFO L225 Difference]: With dead ends: 29263 [2020-10-27 18:42:44,141 INFO L226 Difference]: Without dead ends: 13045 [2020-10-27 18:42:44,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:42:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13045 states. [2020-10-27 18:42:44,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13045 to 10287. [2020-10-27 18:42:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10287 states. [2020-10-27 18:42:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10287 states to 10287 states and 11073 transitions. [2020-10-27 18:42:44,385 INFO L78 Accepts]: Start accepts. Automaton has 10287 states and 11073 transitions. Word has length 818 [2020-10-27 18:42:44,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:44,385 INFO L481 AbstractCegarLoop]: Abstraction has 10287 states and 11073 transitions. [2020-10-27 18:42:44,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:42:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 10287 states and 11073 transitions. [2020-10-27 18:42:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-27 18:42:44,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:44,413 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-27 18:42:44,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:42:44,414 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:44,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:44,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1804920558, now seen corresponding path program 1 times [2020-10-27 18:42:44,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:44,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989560537] [2020-10-27 18:42:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:44,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:45,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:45,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:45,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:49,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:49,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-27 18:42:49,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:42:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 18:42:49,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 448 [2020-10-27 18:42:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-27 18:42:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:49,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:49,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:49,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:49,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:49,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:42:49,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:49,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:49,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:42:49,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:42:49,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:49,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:42:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:49,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:49,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:42:49,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:42:49,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-27 18:42:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:50,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:50,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:42:50,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:42:50,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:42:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:50,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-27 18:42:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:50,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:50,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:50,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:42:50,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:50,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 18:42:50,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 18:42:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:50,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-10-27 18:42:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:50,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:50,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:42:50,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:50,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 18:42:50,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:50,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:50,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 18:42:50,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:50,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:50,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2020-10-27 18:42:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:50,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:50,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:42:50,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:50,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:42:50,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:50,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:50,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:42:50,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:50,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1999 backedges. 668 proven. 294 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2020-10-27 18:42:51,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989560537] [2020-10-27 18:42:51,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:51,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:42:51,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779326254] [2020-10-27 18:42:51,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:42:51,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:51,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:42:51,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:42:51,244 INFO L87 Difference]: Start difference. First operand 10287 states and 11073 transitions. Second operand 7 states. [2020-10-27 18:42:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:56,282 INFO L93 Difference]: Finished difference Result 24819 states and 27336 transitions. [2020-10-27 18:42:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:42:56,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1003 [2020-10-27 18:42:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:56,329 INFO L225 Difference]: With dead ends: 24819 [2020-10-27 18:42:56,329 INFO L226 Difference]: Without dead ends: 14538 [2020-10-27 18:42:56,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:42:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14538 states. [2020-10-27 18:42:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14538 to 14017. [2020-10-27 18:42:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14017 states. [2020-10-27 18:42:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14017 states to 14017 states and 14990 transitions. [2020-10-27 18:42:56,763 INFO L78 Accepts]: Start accepts. Automaton has 14017 states and 14990 transitions. Word has length 1003 [2020-10-27 18:42:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:56,765 INFO L481 AbstractCegarLoop]: Abstraction has 14017 states and 14990 transitions. [2020-10-27 18:42:56,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:42:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 14017 states and 14990 transitions. [2020-10-27 18:42:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2020-10-27 18:42:56,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:56,807 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2020-10-27 18:42:56,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:42:56,808 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2014878044, now seen corresponding path program 1 times [2020-10-27 18:42:56,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:56,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168383194] [2020-10-27 18:42:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:57,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1118 [2020-10-27 18:43:02,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:43:02,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 18:43:02,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1063 [2020-10-27 18:43:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 18:43:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:02,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:43:02,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:02,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:02,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:43:02,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:43:02,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:02,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:43:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:43:02,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:43:02,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-27 18:43:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:43:02,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:43:02,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 18:43:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:43:02,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 18:43:02,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-27 18:43:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:43:02,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:43:02,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:02,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:02,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 833 [2020-10-27 18:43:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:02,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:02,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:43:02,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:02,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 18:43:02,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-27 18:43:02,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 279 proven. 6 refuted. 0 times theorem prover too weak. 2012 trivial. 0 not checked. [2020-10-27 18:43:03,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168383194] [2020-10-27 18:43:03,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:03,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:43:03,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851453214] [2020-10-27 18:43:03,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:43:03,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:03,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:43:03,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:43:03,667 INFO L87 Difference]: Start difference. First operand 14017 states and 14990 transitions. Second operand 5 states. [2020-10-27 18:43:06,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:43:06,194 INFO L93 Difference]: Finished difference Result 14380 states and 15360 transitions. [2020-10-27 18:43:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:43:06,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1096 [2020-10-27 18:43:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:43:06,237 INFO L225 Difference]: With dead ends: 14380 [2020-10-27 18:43:06,238 INFO L226 Difference]: Without dead ends: 14021 [2020-10-27 18:43:06,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:43:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14021 states. [2020-10-27 18:43:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14021 to 14015. [2020-10-27 18:43:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14015 states. [2020-10-27 18:43:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14015 states to 14015 states and 14975 transitions. [2020-10-27 18:43:06,495 INFO L78 Accepts]: Start accepts. Automaton has 14015 states and 14975 transitions. Word has length 1096 [2020-10-27 18:43:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:43:06,496 INFO L481 AbstractCegarLoop]: Abstraction has 14015 states and 14975 transitions. [2020-10-27 18:43:06,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:43:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 14015 states and 14975 transitions. [2020-10-27 18:43:06,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1174 [2020-10-27 18:43:06,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:43:06,547 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:43:06,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:43:06,548 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:43:06,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:43:06,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1535907326, now seen corresponding path program 1 times [2020-10-27 18:43:06,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:43:06,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426451409] [2020-10-27 18:43:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:43:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:06,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:07,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:07,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:11,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:11,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1197 [2020-10-27 18:43:11,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:43:11,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 18:43:11,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:43:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1139 [2020-10-27 18:43:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 18:43:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:12,521 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2020-10-27 18:43:12,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:12,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:12,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:12,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:12,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:12,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:43:12,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:12,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:12,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:12,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:43:12,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 18:43:12,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:12,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:43:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:12,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:12,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:12,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:43:12,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:43:12,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-27 18:43:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:13,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:13,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:43:13,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:13,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:43:13,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:13,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:13,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 18:43:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:13,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:13,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:43:13,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 18:43:13,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:13,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:13,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-27 18:43:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:13,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:13,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:13,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:43:13,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:43:13,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:13,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 833 [2020-10-27 18:43:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:13,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:13,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:43:13,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:13,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 18:43:13,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:13,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-27 18:43:13,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:13,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:13,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:13,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:43:13,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:43:13,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 18:43:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 279 proven. 6 refuted. 0 times theorem prover too weak. 2043 trivial. 0 not checked. [2020-10-27 18:43:14,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426451409] [2020-10-27 18:43:14,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:14,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:43:14,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734801304] [2020-10-27 18:43:14,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:43:14,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:14,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:43:14,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:43:14,693 INFO L87 Difference]: Start difference. First operand 14015 states and 14975 transitions. Second operand 8 states. [2020-10-27 18:43:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:43:18,238 INFO L93 Difference]: Finished difference Result 26136 states and 27937 transitions. [2020-10-27 18:43:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:43:18,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1173 [2020-10-27 18:43:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:43:18,269 INFO L225 Difference]: With dead ends: 26136 [2020-10-27 18:43:18,270 INFO L226 Difference]: Without dead ends: 11972 [2020-10-27 18:43:18,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:43:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11972 states. [2020-10-27 18:43:18,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11972 to 11621. [2020-10-27 18:43:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11621 states. [2020-10-27 18:43:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11621 states to 11621 states and 12331 transitions. [2020-10-27 18:43:18,598 INFO L78 Accepts]: Start accepts. Automaton has 11621 states and 12331 transitions. Word has length 1173 [2020-10-27 18:43:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:43:18,600 INFO L481 AbstractCegarLoop]: Abstraction has 11621 states and 12331 transitions. [2020-10-27 18:43:18,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:43:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 11621 states and 12331 transitions. [2020-10-27 18:43:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1393 [2020-10-27 18:43:18,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:43:18,636 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-27 18:43:18,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:43:18,636 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:43:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:43:18,637 INFO L82 PathProgramCache]: Analyzing trace with hash 277787039, now seen corresponding path program 1 times [2020-10-27 18:43:18,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:43:18,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229173875] [2020-10-27 18:43:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:43:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:24,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:24,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1418 [2020-10-27 18:43:24,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:43:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 18:43:24,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 843 [2020-10-27 18:43:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:43:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:24,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:24,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:24,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:43:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:24,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:24,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:24,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:24,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:43:24,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:24,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:43:24,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:24,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:43:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:24,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:24,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:43:24,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:24,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:43:24,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:24,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:24,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-27 18:43:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:24,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:43:24,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:43:24,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 18:43:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:24,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:24,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:43:24,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:24,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:43:24,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:24,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-27 18:43:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:43:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:43:24,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:43:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:24,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 833 [2020-10-27 18:43:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:25,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:25,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:43:25,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 18:43:25,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:43:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:43:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:25,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2020-10-27 18:43:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:25,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:25,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:43:25,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 18:43:25,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:25,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:25,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:43:25,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:25,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:25,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 1131 proven. 214 refuted. 0 times theorem prover too weak. 2034 trivial. 0 not checked. [2020-10-27 18:43:26,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229173875] [2020-10-27 18:43:26,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:26,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:43:26,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523356169] [2020-10-27 18:43:26,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:43:26,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:26,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:43:26,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:43:26,770 INFO L87 Difference]: Start difference. First operand 11621 states and 12331 transitions. Second operand 7 states. [2020-10-27 18:43:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:43:31,806 INFO L93 Difference]: Finished difference Result 23252 states and 24686 transitions. [2020-10-27 18:43:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:43:31,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1392 [2020-10-27 18:43:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:43:31,838 INFO L225 Difference]: With dead ends: 23252 [2020-10-27 18:43:31,838 INFO L226 Difference]: Without dead ends: 11637 [2020-10-27 18:43:31,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:43:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11637 states. [2020-10-27 18:43:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11637 to 11623. [2020-10-27 18:43:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11623 states. [2020-10-27 18:43:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11623 states to 11623 states and 12309 transitions. [2020-10-27 18:43:32,252 INFO L78 Accepts]: Start accepts. Automaton has 11623 states and 12309 transitions. Word has length 1392 [2020-10-27 18:43:32,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:43:32,253 INFO L481 AbstractCegarLoop]: Abstraction has 11623 states and 12309 transitions. [2020-10-27 18:43:32,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:43:32,254 INFO L276 IsEmpty]: Start isEmpty. Operand 11623 states and 12309 transitions. [2020-10-27 18:43:32,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1458 [2020-10-27 18:43:32,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:43:32,289 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-27 18:43:32,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:43:32,290 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:43:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:43:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1708494842, now seen corresponding path program 1 times [2020-10-27 18:43:32,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:43:32,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167401872] [2020-10-27 18:43:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:43:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:33,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:33,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:33,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:37,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:37,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1485 [2020-10-27 18:43:37,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:43:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-27 18:43:37,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 837 [2020-10-27 18:43:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:43:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:37,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:37,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:37,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:37,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:43:37,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:37,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:37,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:37,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:37,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:38,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:38,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:43:38,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:38,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 18:43:38,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:38,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:38,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:43:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:38,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:38,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:43:38,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:38,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:43:38,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-27 18:43:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:38,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:38,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:38,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:43:38,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:43:38,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:38,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-27 18:43:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:38,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:38,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:43:38,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:43:38,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:38,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-27 18:43:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:38,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:38,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:43:38,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:38,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:43:38,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:38,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:43:38,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 827 [2020-10-27 18:43:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:38,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:38,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:43:38,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:38,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 18:43:38,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:38,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:38,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:43:38,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:43:38,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:38,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 898 [2020-10-27 18:43:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:38,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:38,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:43:38,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:38,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:43:38,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:43:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:38,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1113 [2020-10-27 18:43:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:38,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:38,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:43:38,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:38,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 18:43:38,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:38,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:43:38,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:38,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:38,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:38,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:38,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:43:38,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:43:38,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:38,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:38,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:38,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3712 backedges. 759 proven. 138 refuted. 0 times theorem prover too weak. 2815 trivial. 0 not checked. [2020-10-27 18:43:40,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167401872] [2020-10-27 18:43:40,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:40,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:43:40,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190394135] [2020-10-27 18:43:40,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:43:40,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:40,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:43:40,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:43:40,189 INFO L87 Difference]: Start difference. First operand 11623 states and 12309 transitions. Second operand 7 states. [2020-10-27 18:43:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:43:44,961 INFO L93 Difference]: Finished difference Result 25280 states and 26773 transitions. [2020-10-27 18:43:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:43:44,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1457 [2020-10-27 18:43:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:43:44,994 INFO L225 Difference]: With dead ends: 25280 [2020-10-27 18:43:44,995 INFO L226 Difference]: Without dead ends: 13663 [2020-10-27 18:43:45,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:43:45,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13663 states. [2020-10-27 18:43:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13663 to 11970. [2020-10-27 18:43:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11970 states. [2020-10-27 18:43:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11970 states to 11970 states and 12700 transitions. [2020-10-27 18:43:45,210 INFO L78 Accepts]: Start accepts. Automaton has 11970 states and 12700 transitions. Word has length 1457 [2020-10-27 18:43:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:43:45,212 INFO L481 AbstractCegarLoop]: Abstraction has 11970 states and 12700 transitions. [2020-10-27 18:43:45,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:43:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 11970 states and 12700 transitions. [2020-10-27 18:43:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1559 [2020-10-27 18:43:45,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:43:45,247 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:43:45,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:43:45,248 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:43:45,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:43:45,249 INFO L82 PathProgramCache]: Analyzing trace with hash -584698645, now seen corresponding path program 1 times [2020-10-27 18:43:45,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:43:45,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88105490] [2020-10-27 18:43:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:43:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:45,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:47,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:50,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:50,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1584 [2020-10-27 18:43:50,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:43:50,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-27 18:43:50,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1009 [2020-10-27 18:43:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:43:50,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:50,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:43:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:50,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:50,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:50,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:43:50,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:43:50,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:43:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:51,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:43:51,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 18:43:51,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:43:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:51,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:51,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:43:51,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:43:51,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:51,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:51,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-27 18:43:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:51,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:51,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:51,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:43:51,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:43:51,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:51,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:51,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-27 18:43:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:51,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:51,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:43:51,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 18:43:51,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-27 18:43:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:51,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:51,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:43:51,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 18:43:51,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:43:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-27 18:43:51,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:51,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 999 [2020-10-27 18:43:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:52,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:52,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:43:52,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-27 18:43:52,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:43:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:43:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:43:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:52,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1214 [2020-10-27 18:43:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:52,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:52,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 18:43:52,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 18:43:52,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:43:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:52,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:43:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:43:52,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:43:52,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:43:52,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 18:43:52,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:43:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:43:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:43:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:43:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:43:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:43:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3747 backedges. 1170 proven. 214 refuted. 0 times theorem prover too weak. 2363 trivial. 0 not checked. [2020-10-27 18:43:55,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88105490] [2020-10-27 18:43:55,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:55,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:43:55,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096365277] [2020-10-27 18:43:55,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:43:55,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:55,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:43:55,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:43:55,328 INFO L87 Difference]: Start difference. First operand 11970 states and 12700 transitions. Second operand 8 states.