/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/Problem03_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:47:31,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:47:31,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:47:31,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:47:31,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:47:31,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:47:31,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:47:31,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:47:31,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:47:31,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:47:31,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:47:31,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:47:31,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:47:31,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:47:31,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:47:31,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:47:31,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:47:31,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:47:31,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:47:31,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:47:31,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:47:31,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:47:31,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:47:31,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:47:31,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:47:31,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:47:31,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:47:31,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:47:31,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:47:31,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:47:31,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:47:31,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:47:31,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:47:31,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:47:31,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:47:31,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:47:31,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:47:31,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:47:31,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:47:31,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:47:31,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:47:31,817 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 15:47:31,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:47:31,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:47:31,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:47:31,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:47:31,883 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:47:31,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:47:31,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:47:31,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:47:31,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:47:31,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:47:31,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:47:31,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:47:31,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:47:31,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:47:31,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:47:31,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:47:31,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:47:31,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:47:31,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:47:31,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:47:31,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:47:31,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:47:31,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:47:31,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:47:31,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:47:31,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:47:31,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:47:31,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:47:31,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:47:31,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:47:32,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:47:32,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:47:32,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:47:32,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:47:32,301 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:47:32,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-27 15:47:32,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3c3fe40e/afb3467b37f148c2ae16ba243c1baa61/FLAGbb2c808fe [2020-10-27 15:47:33,270 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:47:33,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-27 15:47:33,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3c3fe40e/afb3467b37f148c2ae16ba243c1baa61/FLAGbb2c808fe [2020-10-27 15:47:33,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3c3fe40e/afb3467b37f148c2ae16ba243c1baa61 [2020-10-27 15:47:33,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:47:33,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:47:33,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:47:33,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:47:33,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:47:33,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:47:33" (1/1) ... [2020-10-27 15:47:33,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b19e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:33, skipping insertion in model container [2020-10-27 15:47:33,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:47:33" (1/1) ... [2020-10-27 15:47:33,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:47:33,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:47:34,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:47:34,193 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:47:34,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:47:34,556 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:47:34,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34 WrapperNode [2020-10-27 15:47:34,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:47:34,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:47:34,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:47:34,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:47:34,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34" (1/1) ... [2020-10-27 15:47:34,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34" (1/1) ... [2020-10-27 15:47:34,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34" (1/1) ... [2020-10-27 15:47:34,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34" (1/1) ... [2020-10-27 15:47:34,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34" (1/1) ... [2020-10-27 15:47:34,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34" (1/1) ... [2020-10-27 15:47:34,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34" (1/1) ... [2020-10-27 15:47:34,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:47:34,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:47:34,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:47:34,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:47:34,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34" (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 15:47:34,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:47:34,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:47:34,840 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:47:34,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:47:34,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:47:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:47:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:47:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:47:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:47:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:47:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:47:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:47:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:47:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:47:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:47:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:47:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:47:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:47:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:47:36,985 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:47:36,986 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:47:36,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:47:36 BoogieIcfgContainer [2020-10-27 15:47:36,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:47:36,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:47:36,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:47:36,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:47:37,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:47:33" (1/3) ... [2020-10-27 15:47:37,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55311639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:47:37, skipping insertion in model container [2020-10-27 15:47:37,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:47:34" (2/3) ... [2020-10-27 15:47:37,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55311639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:47:37, skipping insertion in model container [2020-10-27 15:47:37,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:47:36" (3/3) ... [2020-10-27 15:47:37,008 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label45.c [2020-10-27 15:47:37,022 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:47:37,028 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:47:37,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:47:37,073 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:47:37,073 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:47:37,074 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:47:37,074 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:47:37,074 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:47:37,074 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:47:37,074 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:47:37,074 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:47:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 15:47:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 15:47:37,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:47:37,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:47:37,119 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:47:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:47:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 38750596, now seen corresponding path program 1 times [2020-10-27 15:47:37,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:47:37,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825057148] [2020-10-27 15:47:37,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:47:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:47:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:38,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:42,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:47:42,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 15:47:42,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:47:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 15:47:42,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:47:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:47:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:47:42,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 15:47:42,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:47:43,150 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:47:43,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:47:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:47:43,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:43,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:47:43,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:47:43,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:47:43,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 15:47:43,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:47:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:47:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:47:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:47:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:47:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:47:43,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825057148] [2020-10-27 15:47:43,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:47:43,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:47:43,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454525213] [2020-10-27 15:47:43,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:47:43,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:47:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:47:43,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:47:43,373 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-27 15:47:43,908 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:47:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:47:47,386 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-27 15:47:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:47:47,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-27 15:47:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:47:47,424 INFO L225 Difference]: With dead ends: 889 [2020-10-27 15:47:47,424 INFO L226 Difference]: Without dead ends: 481 [2020-10-27 15:47:47,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:47:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-27 15:47:47,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-27 15:47:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-27 15:47:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-27 15:47:47,527 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 151 [2020-10-27 15:47:47,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:47:47,529 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-27 15:47:47,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:47:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-27 15:47:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 15:47:47,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:47:47,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:47,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:47:47,537 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:47:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:47:47,538 INFO L82 PathProgramCache]: Analyzing trace with hash -816271309, now seen corresponding path program 1 times [2020-10-27 15:47:47,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:47:47,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404778999] [2020-10-27 15:47:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:47:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:47:47,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:48,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:49,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:47:49,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 15:47:49,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:47:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2402 [2020-10-27 15:47:49,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:47:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:47:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 15:47:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 15:47:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:47:50,462 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:47:50,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:47:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:47:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:50,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:47:50,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:47:50,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:47:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:47:50,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:47:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:47:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:47:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:47:50,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:47:50,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:47:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:47:50,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:50,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:47:50,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:47:50,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:47:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 15:47:50,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:47:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:47:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:47:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:47:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:47:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:47:50,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404778999] [2020-10-27 15:47:50,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:47:50,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:47:50,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740739395] [2020-10-27 15:47:50,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:47:50,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:47:50,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:47:50,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:47:50,718 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 6 states. [2020-10-27 15:47:51,132 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:47:51,399 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:47:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:47:55,914 INFO L93 Difference]: Finished difference Result 1791 states and 2805 transitions. [2020-10-27 15:47:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:47:55,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-10-27 15:47:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:47:55,935 INFO L225 Difference]: With dead ends: 1791 [2020-10-27 15:47:55,936 INFO L226 Difference]: Without dead ends: 1321 [2020-10-27 15:47:55,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:47:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-27 15:47:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1314. [2020-10-27 15:47:56,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-27 15:47:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1858 transitions. [2020-10-27 15:47:56,058 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1858 transitions. Word has length 160 [2020-10-27 15:47:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:47:56,059 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1858 transitions. [2020-10-27 15:47:56,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:47:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1858 transitions. [2020-10-27 15:47:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-27 15:47:56,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:47:56,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:56,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:47:56,070 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:47:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:47:56,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1305482788, now seen corresponding path program 1 times [2020-10-27 15:47:56,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:47:56,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270145975] [2020-10-27 15:47:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:47:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:47:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:58,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:47:58,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 15:47:58,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:47:58,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2408 [2020-10-27 15:47:58,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:47:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:47:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 15:47:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 15:47:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:47:58,974 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:47:58,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:47:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:47:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:58,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:47:58,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:47:58,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:47:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:47:58,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:47:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:47:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:47:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:47:58,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:47:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:47:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:47:59,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:47:59,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:47:59,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 15:47:59,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:47:59,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 15:47:59,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:47:59,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:47:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:47:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 15:47:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:47:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:47:59,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270145975] [2020-10-27 15:47:59,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:47:59,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:47:59,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524695380] [2020-10-27 15:47:59,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:47:59,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:47:59,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:47:59,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:47:59,313 INFO L87 Difference]: Start difference. First operand 1314 states and 1858 transitions. Second operand 5 states. [2020-10-27 15:47:59,604 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:48:02,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:48:02,933 INFO L93 Difference]: Finished difference Result 3903 states and 5634 transitions. [2020-10-27 15:48:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:48:02,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-27 15:48:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:48:02,951 INFO L225 Difference]: With dead ends: 3903 [2020-10-27 15:48:02,951 INFO L226 Difference]: Without dead ends: 2595 [2020-10-27 15:48:02,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:48:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2020-10-27 15:48:03,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2573. [2020-10-27 15:48:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-10-27 15:48:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3657 transitions. [2020-10-27 15:48:03,064 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3657 transitions. Word has length 187 [2020-10-27 15:48:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:48:03,064 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 3657 transitions. [2020-10-27 15:48:03,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:48:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3657 transitions. [2020-10-27 15:48:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-27 15:48:03,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:48:03,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 15:48:03,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:48:03,075 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:48:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:48:03,075 INFO L82 PathProgramCache]: Analyzing trace with hash 96655298, now seen corresponding path program 1 times [2020-10-27 15:48:03,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:48:03,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108025277] [2020-10-27 15:48:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:48:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:08,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:08,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-27 15:48:08,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:48:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 15:48:08,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:48:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 15:48:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 15:48:08,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:08,613 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:48:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:48:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:08,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:08,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:48:08,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:48:08,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:48:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:48:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:08,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:08,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:08,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:48:08,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:48:08,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:08,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 15:48:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:08,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:08,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 15:48:08,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 15:48:08,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:48:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:48:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 15:48:09,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108025277] [2020-10-27 15:48:09,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:48:09,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:48:09,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728591466] [2020-10-27 15:48:09,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:48:09,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:48:09,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:48:09,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:48:09,024 INFO L87 Difference]: Start difference. First operand 2573 states and 3657 transitions. Second operand 5 states. [2020-10-27 15:48:09,288 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:48:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:48:12,477 INFO L93 Difference]: Finished difference Result 6405 states and 9333 transitions. [2020-10-27 15:48:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:48:12,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-27 15:48:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:48:12,508 INFO L225 Difference]: With dead ends: 6405 [2020-10-27 15:48:12,508 INFO L226 Difference]: Without dead ends: 3838 [2020-10-27 15:48:12,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:48:12,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2020-10-27 15:48:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 3832. [2020-10-27 15:48:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3832 states. [2020-10-27 15:48:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 5389 transitions. [2020-10-27 15:48:12,699 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 5389 transitions. Word has length 192 [2020-10-27 15:48:12,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:48:12,699 INFO L481 AbstractCegarLoop]: Abstraction has 3832 states and 5389 transitions. [2020-10-27 15:48:12,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:48:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 5389 transitions. [2020-10-27 15:48:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 15:48:12,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:48:12,714 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:12,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:48:12,714 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:48:12,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:48:12,715 INFO L82 PathProgramCache]: Analyzing trace with hash 850284426, now seen corresponding path program 1 times [2020-10-27 15:48:12,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:48:12,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66421428] [2020-10-27 15:48:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:48:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:12,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:17,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:17,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 15:48:17,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:48:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 15:48:17,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:48:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 15:48:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 15:48:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:48:18,221 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:48:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:48:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:18,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:18,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:18,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:48:18,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:18,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:48:18,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:18,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:18,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:18,387 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:48:18,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:48:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:18,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:18,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:18,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:48:18,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:48:18,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 15:48:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 15:48:18,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 15:48:18,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:48:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 15:48:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 15:48:18,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66421428] [2020-10-27 15:48:18,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:48:18,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:48:18,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967176490] [2020-10-27 15:48:18,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:48:18,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:48:18,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:48:18,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:48:18,583 INFO L87 Difference]: Start difference. First operand 3832 states and 5389 transitions. Second operand 5 states. [2020-10-27 15:48:18,958 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:48:22,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:48:22,122 INFO L93 Difference]: Finished difference Result 11222 states and 16089 transitions. [2020-10-27 15:48:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:48:22,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-10-27 15:48:22,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:48:22,172 INFO L225 Difference]: With dead ends: 11222 [2020-10-27 15:48:22,172 INFO L226 Difference]: Without dead ends: 7396 [2020-10-27 15:48:22,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:48:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2020-10-27 15:48:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 7387. [2020-10-27 15:48:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7387 states. [2020-10-27 15:48:22,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7387 states to 7387 states and 10106 transitions. [2020-10-27 15:48:22,424 INFO L78 Accepts]: Start accepts. Automaton has 7387 states and 10106 transitions. Word has length 196 [2020-10-27 15:48:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:48:22,425 INFO L481 AbstractCegarLoop]: Abstraction has 7387 states and 10106 transitions. [2020-10-27 15:48:22,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:48:22,425 INFO L276 IsEmpty]: Start isEmpty. Operand 7387 states and 10106 transitions. [2020-10-27 15:48:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 15:48:22,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:48:22,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:22,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:48:22,447 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:48:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:48:22,448 INFO L82 PathProgramCache]: Analyzing trace with hash 438531581, now seen corresponding path program 1 times [2020-10-27 15:48:22,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:48:22,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857961002] [2020-10-27 15:48:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:48:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:27,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:27,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-27 15:48:27,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:48:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 15:48:27,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:48:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 15:48:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 15:48:27,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:27,833 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:48:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:48:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:27,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:27,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:48:27,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:48:27,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:48:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:48:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:27,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:27,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:48:27,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 15:48:27,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:48:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 15:48:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:28,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 15:48:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:28,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:28,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 15:48:28,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 15:48:28,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:48:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:48:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 15:48:28,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:48:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:48:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:48:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 15:48:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 72 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 15:48:28,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857961002] [2020-10-27 15:48:28,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:48:28,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:48:28,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140175010] [2020-10-27 15:48:28,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:48:28,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:48:28,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:48:28,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:48:28,363 INFO L87 Difference]: Start difference. First operand 7387 states and 10106 transitions. Second operand 7 states. [2020-10-27 15:48:28,742 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:48:30,317 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:48:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:48:33,235 INFO L93 Difference]: Finished difference Result 15059 states and 21586 transitions. [2020-10-27 15:48:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:48:33,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-27 15:48:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:48:33,295 INFO L225 Difference]: With dead ends: 15059 [2020-10-27 15:48:33,295 INFO L226 Difference]: Without dead ends: 7678 [2020-10-27 15:48:33,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:48:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2020-10-27 15:48:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 7473. [2020-10-27 15:48:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7473 states. [2020-10-27 15:48:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7473 states to 7473 states and 10139 transitions. [2020-10-27 15:48:33,636 INFO L78 Accepts]: Start accepts. Automaton has 7473 states and 10139 transitions. Word has length 213 [2020-10-27 15:48:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:48:33,636 INFO L481 AbstractCegarLoop]: Abstraction has 7473 states and 10139 transitions. [2020-10-27 15:48:33,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:48:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 7473 states and 10139 transitions. [2020-10-27 15:48:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 15:48:33,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:48:33,657 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:33,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:48:33,658 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:48:33,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:48:33,658 INFO L82 PathProgramCache]: Analyzing trace with hash 191000901, now seen corresponding path program 1 times [2020-10-27 15:48:33,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:48:33,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251340394] [2020-10-27 15:48:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:48:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:36,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:38,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:38,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-27 15:48:38,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:48:38,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 15:48:38,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:48:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 15:48:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 15:48:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:39,063 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:48:39,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:48:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:39,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:39,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:39,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:48:39,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:48:39,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:48:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:39,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:39,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 15:48:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 15:48:39,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:39,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:48:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:39,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:39,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:39,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:48:39,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 15:48:39,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:48:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:48:39,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 15:48:39,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251340394] [2020-10-27 15:48:39,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:48:39,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:48:39,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357006665] [2020-10-27 15:48:39,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:48:39,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:48:39,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:48:39,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:48:39,475 INFO L87 Difference]: Start difference. First operand 7473 states and 10139 transitions. Second operand 6 states. [2020-10-27 15:48:39,752 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:48:40,743 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:48:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:48:44,478 INFO L93 Difference]: Finished difference Result 25109 states and 35262 transitions. [2020-10-27 15:48:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:48:44,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-27 15:48:44,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:48:44,558 INFO L225 Difference]: With dead ends: 25109 [2020-10-27 15:48:44,559 INFO L226 Difference]: Without dead ends: 17642 [2020-10-27 15:48:44,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:48:44,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17642 states. [2020-10-27 15:48:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17642 to 14012. [2020-10-27 15:48:45,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14012 states. [2020-10-27 15:48:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14012 states to 14012 states and 20226 transitions. [2020-10-27 15:48:45,133 INFO L78 Accepts]: Start accepts. Automaton has 14012 states and 20226 transitions. Word has length 213 [2020-10-27 15:48:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:48:45,134 INFO L481 AbstractCegarLoop]: Abstraction has 14012 states and 20226 transitions. [2020-10-27 15:48:45,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:48:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 14012 states and 20226 transitions. [2020-10-27 15:48:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-27 15:48:45,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:48:45,185 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:45,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:48:45,185 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:48:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:48:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1351183880, now seen corresponding path program 1 times [2020-10-27 15:48:45,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:48:45,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569550076] [2020-10-27 15:48:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:48:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:50,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:50,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-27 15:48:50,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:48:50,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 15:48:50,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:48:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-27 15:48:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:48:50,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:50,517 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:48:50,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:48:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:50,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:50,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:48:50,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:50,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:48:50,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:50,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:50,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:48:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:50,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:50,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:48:50,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:48:50,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 15:48:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:50,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:50,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 15:48:50,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:50,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 15:48:50,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:48:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 15:48:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:48:50,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 15:48:51,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569550076] [2020-10-27 15:48:51,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:48:51,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 15:48:51,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320809982] [2020-10-27 15:48:51,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:48:51,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:48:51,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:48:51,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:48:51,034 INFO L87 Difference]: Start difference. First operand 14012 states and 20226 transitions. Second operand 5 states. [2020-10-27 15:48:51,543 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:48:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:48:53,603 INFO L93 Difference]: Finished difference Result 28060 states and 40539 transitions. [2020-10-27 15:48:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:48:53,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-27 15:48:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:48:53,671 INFO L225 Difference]: With dead ends: 28060 [2020-10-27 15:48:53,671 INFO L226 Difference]: Without dead ends: 14054 [2020-10-27 15:48:53,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:48:53,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2020-10-27 15:48:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 14010. [2020-10-27 15:48:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14010 states. [2020-10-27 15:48:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14010 states to 14010 states and 20222 transitions. [2020-10-27 15:48:54,200 INFO L78 Accepts]: Start accepts. Automaton has 14010 states and 20222 transitions. Word has length 253 [2020-10-27 15:48:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:48:54,200 INFO L481 AbstractCegarLoop]: Abstraction has 14010 states and 20222 transitions. [2020-10-27 15:48:54,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:48:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 14010 states and 20222 transitions. [2020-10-27 15:48:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 15:48:54,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:48:54,252 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:54,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:48:54,253 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:48:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:48:54,253 INFO L82 PathProgramCache]: Analyzing trace with hash 381728917, now seen corresponding path program 1 times [2020-10-27 15:48:54,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:48:54,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042427784] [2020-10-27 15:48:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:48:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:54,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:54,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:57,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:57,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 15:48:57,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:48:57,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3234 [2020-10-27 15:48:57,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:48:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:48:57,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 15:48:57,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:57,923 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:48:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:48:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:57,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:57,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:48:57,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 15:48:57,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:48:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:48:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:58,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:48:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:58,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:58,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:48:58,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:58,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:48:58,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:48:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:48:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:48:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:48:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:48:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:48:58,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:48:58,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:48:58,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:48:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-27 15:48:58,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:48:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:48:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:48:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:48:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:48:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:48:58,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042427784] [2020-10-27 15:48:58,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:48:58,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:48:58,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481379062] [2020-10-27 15:48:58,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:48:58,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:48:58,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:48:58,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:48:58,831 INFO L87 Difference]: Start difference. First operand 14010 states and 20222 transitions. Second operand 7 states. [2020-10-27 15:48:59,095 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:48:59,854 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:49:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:02,586 INFO L93 Difference]: Finished difference Result 26823 states and 39907 transitions. [2020-10-27 15:49:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:49:02,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-27 15:49:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:02,632 INFO L225 Difference]: With dead ends: 26823 [2020-10-27 15:49:02,632 INFO L226 Difference]: Without dead ends: 12819 [2020-10-27 15:49:02,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:49:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12819 states. [2020-10-27 15:49:03,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12819 to 12673. [2020-10-27 15:49:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12673 states. [2020-10-27 15:49:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12673 states to 12673 states and 16148 transitions. [2020-10-27 15:49:03,096 INFO L78 Accepts]: Start accepts. Automaton has 12673 states and 16148 transitions. Word has length 285 [2020-10-27 15:49:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:03,096 INFO L481 AbstractCegarLoop]: Abstraction has 12673 states and 16148 transitions. [2020-10-27 15:49:03,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:49:03,096 INFO L276 IsEmpty]: Start isEmpty. Operand 12673 states and 16148 transitions. [2020-10-27 15:49:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-27 15:49:03,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:03,140 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:49:03,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:49:03,141 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash -950106234, now seen corresponding path program 1 times [2020-10-27 15:49:03,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:03,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298790903] [2020-10-27 15:49:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:07,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:08,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:08,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-27 15:49:08,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:49:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 15:49:08,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-27 15:49:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 15:49:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:08,670 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:49:08,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:49:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:08,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:08,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:08,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:49:08,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:49:08,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:49:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:08,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:08,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:49:08,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:08,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:49:08,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:08,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:08,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:49:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:09,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:09,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 15:49:09,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:09,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 15:49:09,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:49:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 15:49:09,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 15:49:09,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298790903] [2020-10-27 15:49:09,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:49:09,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:49:09,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315785753] [2020-10-27 15:49:09,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:49:09,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:49:09,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:49:09,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:49:09,292 INFO L87 Difference]: Start difference. First operand 12673 states and 16148 transitions. Second operand 5 states. [2020-10-27 15:49:09,652 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:49:13,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:13,026 INFO L93 Difference]: Finished difference Result 33172 states and 43246 transitions. [2020-10-27 15:49:13,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:49:13,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-27 15:49:13,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:13,111 INFO L225 Difference]: With dead ends: 33172 [2020-10-27 15:49:13,112 INFO L226 Difference]: Without dead ends: 20505 [2020-10-27 15:49:13,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:49:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20505 states. [2020-10-27 15:49:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20505 to 20238. [2020-10-27 15:49:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20238 states. [2020-10-27 15:49:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20238 states to 20238 states and 25961 transitions. [2020-10-27 15:49:13,769 INFO L78 Accepts]: Start accepts. Automaton has 20238 states and 25961 transitions. Word has length 312 [2020-10-27 15:49:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:13,770 INFO L481 AbstractCegarLoop]: Abstraction has 20238 states and 25961 transitions. [2020-10-27 15:49:13,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:49:13,771 INFO L276 IsEmpty]: Start isEmpty. Operand 20238 states and 25961 transitions. [2020-10-27 15:49:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 15:49:13,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:13,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:13,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:49:13,822 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:13,822 INFO L82 PathProgramCache]: Analyzing trace with hash -387805366, now seen corresponding path program 1 times [2020-10-27 15:49:13,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:13,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284298480] [2020-10-27 15:49:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:18,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:18,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 15:49:18,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:49:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 15:49:18,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 15:49:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 15:49:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:19,228 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:49:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:49:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:19,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:49:19,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:19,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:49:19,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:49:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:19,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:19,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:49:19,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:19,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:49:19,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:49:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:19,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:19,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:19,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:49:19,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:19,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 15:49:19,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:49:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:49:19,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:19,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:49:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:19,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:19,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:49:19,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:19,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-27 15:49:19,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:49:19,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:49:19,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 15:49:19,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284298480] [2020-10-27 15:49:19,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:49:19,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:49:19,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472702909] [2020-10-27 15:49:19,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:49:19,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:49:19,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:49:19,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:49:19,901 INFO L87 Difference]: Start difference. First operand 20238 states and 25961 transitions. Second operand 7 states. [2020-10-27 15:49:20,145 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:49:22,634 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:49:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:23,610 INFO L93 Difference]: Finished difference Result 40750 states and 53895 transitions. [2020-10-27 15:49:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:49:23,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-27 15:49:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:23,682 INFO L225 Difference]: With dead ends: 40750 [2020-10-27 15:49:23,683 INFO L226 Difference]: Without dead ends: 20518 [2020-10-27 15:49:23,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:49:23,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20518 states. [2020-10-27 15:49:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20518 to 19474. [2020-10-27 15:49:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19474 states. [2020-10-27 15:49:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19474 states to 19474 states and 24066 transitions. [2020-10-27 15:49:24,260 INFO L78 Accepts]: Start accepts. Automaton has 19474 states and 24066 transitions. Word has length 319 [2020-10-27 15:49:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:24,261 INFO L481 AbstractCegarLoop]: Abstraction has 19474 states and 24066 transitions. [2020-10-27 15:49:24,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:49:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 19474 states and 24066 transitions. [2020-10-27 15:49:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-27 15:49:24,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:24,296 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:24,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:49:24,297 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:24,297 INFO L82 PathProgramCache]: Analyzing trace with hash 139937191, now seen corresponding path program 1 times [2020-10-27 15:49:24,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:24,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237807581] [2020-10-27 15:49:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:24,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:24,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:29,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:29,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-27 15:49:29,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:49:29,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 15:49:29,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:29,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:29,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 15:49:29,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 15:49:29,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:29,626 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:49:29,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:49:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:29,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:29,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:49:29,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:49:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:49:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:29,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:29,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:49:29,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:29,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:49:29,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:49:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:29,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:49:29,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 15:49:29,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:49:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:49:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:49:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:29,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:29,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:49:29,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:29,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 15:49:29,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:29,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:49:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:49:29,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:29,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 15:49:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:30,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:30,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:49:30,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:30,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 15:49:30,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 15:49:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:30,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 212 proven. 16 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-27 15:49:30,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237807581] [2020-10-27 15:49:30,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:49:30,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:49:30,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858320602] [2020-10-27 15:49:30,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:49:30,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:49:30,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:49:30,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:49:30,300 INFO L87 Difference]: Start difference. First operand 19474 states and 24066 transitions. Second operand 7 states. [2020-10-27 15:49:30,562 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:49:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:32,736 INFO L93 Difference]: Finished difference Result 36327 states and 45116 transitions. [2020-10-27 15:49:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 15:49:32,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-27 15:49:32,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:32,784 INFO L225 Difference]: With dead ends: 36327 [2020-10-27 15:49:32,785 INFO L226 Difference]: Without dead ends: 16859 [2020-10-27 15:49:32,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:49:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16859 states. [2020-10-27 15:49:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16859 to 15360. [2020-10-27 15:49:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15360 states. [2020-10-27 15:49:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15360 states to 15360 states and 18636 transitions. [2020-10-27 15:49:33,191 INFO L78 Accepts]: Start accepts. Automaton has 15360 states and 18636 transitions. Word has length 336 [2020-10-27 15:49:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:33,192 INFO L481 AbstractCegarLoop]: Abstraction has 15360 states and 18636 transitions. [2020-10-27 15:49:33,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:49:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 15360 states and 18636 transitions. [2020-10-27 15:49:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-27 15:49:33,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:33,218 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:49:33,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:49:33,218 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:33,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:33,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1481318588, now seen corresponding path program 1 times [2020-10-27 15:49:33,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:33,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916865137] [2020-10-27 15:49:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:33,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:34,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:38,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:38,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-27 15:49:38,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:49:38,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 15:49:38,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 15:49:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 15:49:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:38,618 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:49:38,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:49:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:38,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:38,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:38,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:49:38,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:49:38,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:49:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:38,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:38,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 15:49:38,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 15:49:38,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:49:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:38,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:38,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:49:38,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:38,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 15:49:38,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:49:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 15:49:38,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 15:49:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:39,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:39,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:49:39,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-27 15:49:39,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:49:39,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:49:39,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 15:49:39,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916865137] [2020-10-27 15:49:39,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:49:39,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:49:39,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693169599] [2020-10-27 15:49:39,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:49:39,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:49:39,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:49:39,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:49:39,448 INFO L87 Difference]: Start difference. First operand 15360 states and 18636 transitions. Second operand 7 states. [2020-10-27 15:49:39,795 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:49:40,137 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:49:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:44,937 INFO L93 Difference]: Finished difference Result 32656 states and 41271 transitions. [2020-10-27 15:49:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:49:44,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-27 15:49:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:45,004 INFO L225 Difference]: With dead ends: 32656 [2020-10-27 15:49:45,004 INFO L226 Difference]: Without dead ends: 17302 [2020-10-27 15:49:45,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:49:45,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17302 states. [2020-10-27 15:49:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17302 to 16980. [2020-10-27 15:49:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16980 states. [2020-10-27 15:49:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16980 states to 16980 states and 20434 transitions. [2020-10-27 15:49:45,487 INFO L78 Accepts]: Start accepts. Automaton has 16980 states and 20434 transitions. Word has length 392 [2020-10-27 15:49:45,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:45,488 INFO L481 AbstractCegarLoop]: Abstraction has 16980 states and 20434 transitions. [2020-10-27 15:49:45,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:49:45,488 INFO L276 IsEmpty]: Start isEmpty. Operand 16980 states and 20434 transitions. [2020-10-27 15:49:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-27 15:49:45,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:45,518 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 15:49:45,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:49:45,518 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:45,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:45,518 INFO L82 PathProgramCache]: Analyzing trace with hash -451162988, now seen corresponding path program 1 times [2020-10-27 15:49:45,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:45,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984420024] [2020-10-27 15:49:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:50,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:50,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-27 15:49:50,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:49:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-27 15:49:50,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 15:49:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 15:49:50,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:50,991 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:49:50,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:49:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:49:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:49:51,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:51,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:49:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:51,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:51,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:51,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 15:49:51,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 15:49:51,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:49:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:49:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 15:49:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:51,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:49:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:51,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:51,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 15:49:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-27 15:49:51,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:49:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:49:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 15:49:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:51,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 15:49:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:49:51,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:49:51,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:49:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 15:49:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:49:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:49:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 15:49:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:49:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:49:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 451 proven. 122 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-27 15:49:52,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984420024] [2020-10-27 15:49:52,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:49:52,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:49:52,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829364210] [2020-10-27 15:49:52,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:49:52,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:49:52,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:49:52,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:49:52,313 INFO L87 Difference]: Start difference. First operand 16980 states and 20434 transitions. Second operand 7 states. [2020-10-27 15:49:52,806 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:49:54,773 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:49:56,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:49:56,802 INFO L93 Difference]: Finished difference Result 28730 states and 36308 transitions. [2020-10-27 15:49:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:49:56,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 510 [2020-10-27 15:49:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:49:56,852 INFO L225 Difference]: With dead ends: 28730 [2020-10-27 15:49:56,852 INFO L226 Difference]: Without dead ends: 12843 [2020-10-27 15:49:56,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:49:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12843 states. [2020-10-27 15:49:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12843 to 12084. [2020-10-27 15:49:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12084 states. [2020-10-27 15:49:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12084 states to 12084 states and 14143 transitions. [2020-10-27 15:49:57,236 INFO L78 Accepts]: Start accepts. Automaton has 12084 states and 14143 transitions. Word has length 510 [2020-10-27 15:49:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:49:57,237 INFO L481 AbstractCegarLoop]: Abstraction has 12084 states and 14143 transitions. [2020-10-27 15:49:57,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:49:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 12084 states and 14143 transitions. [2020-10-27 15:49:57,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-10-27 15:49:57,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:49:57,258 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-27 15:49:57,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:49:57,258 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:49:57,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:49:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1380865451, now seen corresponding path program 1 times [2020-10-27 15:49:57,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:49:57,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724013995] [2020-10-27 15:49:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:49:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:49:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:57,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:49:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 544 [2020-10-27 15:50:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:50:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-27 15:50:02,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-27 15:50:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 15:50:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:02,909 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:02,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:02,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:02,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:50:02,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:02,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:03,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:03,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 15:50:03,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 15:50:03,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:03,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:50:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:03,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:03,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 15:50:03,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 15:50:03,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:50:03,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:03,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 15:50:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:03,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:03,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 15:50:03,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-27 15:50:03,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:50:03,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 15:50:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-27 15:50:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:03,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:03,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:50:03,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 15:50:03,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 15:50:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 486 proven. 122 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-27 15:50:04,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724013995] [2020-10-27 15:50:04,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:50:04,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:50:04,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368755984] [2020-10-27 15:50:04,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:50:04,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:50:04,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:50:04,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:50:04,084 INFO L87 Difference]: Start difference. First operand 12084 states and 14143 transitions. Second operand 8 states. [2020-10-27 15:50:04,424 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:04,987 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:08,791 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:50:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:50:11,857 INFO L93 Difference]: Finished difference Result 52131 states and 65936 transitions. [2020-10-27 15:50:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 15:50:11,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 526 [2020-10-27 15:50:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:50:11,989 INFO L225 Difference]: With dead ends: 52131 [2020-10-27 15:50:11,989 INFO L226 Difference]: Without dead ends: 41892 [2020-10-27 15:50:12,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:50:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41892 states. [2020-10-27 15:50:13,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41892 to 41254. [2020-10-27 15:50:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41254 states. [2020-10-27 15:50:13,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41254 states to 41254 states and 51108 transitions. [2020-10-27 15:50:13,250 INFO L78 Accepts]: Start accepts. Automaton has 41254 states and 51108 transitions. Word has length 526 [2020-10-27 15:50:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:50:13,251 INFO L481 AbstractCegarLoop]: Abstraction has 41254 states and 51108 transitions. [2020-10-27 15:50:13,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:50:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 41254 states and 51108 transitions. [2020-10-27 15:50:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-27 15:50:13,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:50:13,371 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 15:50:13,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:50:13,371 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:50:13,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:50:13,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1380448873, now seen corresponding path program 1 times [2020-10-27 15:50:13,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:50:13,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291111534] [2020-10-27 15:50:13,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:50:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:13,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:14,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:18,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:18,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 559 [2020-10-27 15:50:18,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:50:18,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 15:50:18,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-27 15:50:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 15:50:18,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:18,924 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:18,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:18,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:18,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:18,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:18,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:50:18,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:18,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:18,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:18,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:18,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:19,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:19,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:19,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:19,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 15:50:19,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:19,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 15:50:19,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:19,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:19,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:50:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:19,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:19,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:19,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 15:50:19,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 15:50:19,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:50:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:19,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 15:50:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:19,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:19,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:19,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 15:50:19,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-27 15:50:19,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:50:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 15:50:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:19,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-27 15:50:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:19,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:19,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:19,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:50:19,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 15:50:19,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 15:50:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 516 proven. 122 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-27 15:50:20,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291111534] [2020-10-27 15:50:20,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:50:20,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:50:20,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625148766] [2020-10-27 15:50:20,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:50:20,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:50:20,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:50:20,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:50:20,269 INFO L87 Difference]: Start difference. First operand 41254 states and 51108 transitions. Second operand 7 states. [2020-10-27 15:50:20,732 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:23,022 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:50:25,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:50:25,836 INFO L93 Difference]: Finished difference Result 88341 states and 120474 transitions. [2020-10-27 15:50:25,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:50:25,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 541 [2020-10-27 15:50:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:50:26,136 INFO L225 Difference]: With dead ends: 88341 [2020-10-27 15:50:26,137 INFO L226 Difference]: Without dead ends: 50536 [2020-10-27 15:50:26,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:50:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50536 states. [2020-10-27 15:50:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50536 to 48407. [2020-10-27 15:50:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48407 states. [2020-10-27 15:50:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48407 states to 48407 states and 60363 transitions. [2020-10-27 15:50:28,256 INFO L78 Accepts]: Start accepts. Automaton has 48407 states and 60363 transitions. Word has length 541 [2020-10-27 15:50:28,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:50:28,256 INFO L481 AbstractCegarLoop]: Abstraction has 48407 states and 60363 transitions. [2020-10-27 15:50:28,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:50:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 48407 states and 60363 transitions. [2020-10-27 15:50:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-27 15:50:28,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:50:28,371 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 15:50:28,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 15:50:28,372 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:50:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:50:28,372 INFO L82 PathProgramCache]: Analyzing trace with hash 5953376, now seen corresponding path program 1 times [2020-10-27 15:50:28,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:50:28,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241954398] [2020-10-27 15:50:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:50:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:28,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:29,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:33,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:33,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-27 15:50:33,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:50:33,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 15:50:33,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-27 15:50:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 15:50:33,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:33,920 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:33,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:33,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:33,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:33,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:50:33,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:34,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:34,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:34,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:34,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 15:50:34,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 15:50:34,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:34,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:50:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:34,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:34,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:50:34,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:34,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 15:50:34,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 15:50:34,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:34,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-27 15:50:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:34,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:34,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:34,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 15:50:34,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:34,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-27 15:50:34,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:50:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 15:50:34,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:34,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-27 15:50:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:34,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:35,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:35,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 15:50:35,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 15:50:35,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 15:50:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 522 proven. 122 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-27 15:50:35,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241954398] [2020-10-27 15:50:35,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:50:35,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:50:35,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084312083] [2020-10-27 15:50:35,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:50:35,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:50:35,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:50:35,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:50:35,475 INFO L87 Difference]: Start difference. First operand 48407 states and 60363 transitions. Second operand 7 states. [2020-10-27 15:50:35,752 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:50:40,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:50:40,360 INFO L93 Difference]: Finished difference Result 107574 states and 136442 transitions. [2020-10-27 15:50:40,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:50:40,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 544 [2020-10-27 15:50:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:50:40,780 INFO L225 Difference]: With dead ends: 107574 [2020-10-27 15:50:40,780 INFO L226 Difference]: Without dead ends: 61139 [2020-10-27 15:50:41,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:50:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61139 states. [2020-10-27 15:50:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61139 to 60135. [2020-10-27 15:50:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60135 states. [2020-10-27 15:50:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60135 states to 60135 states and 75310 transitions. [2020-10-27 15:50:43,524 INFO L78 Accepts]: Start accepts. Automaton has 60135 states and 75310 transitions. Word has length 544 [2020-10-27 15:50:43,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:50:43,525 INFO L481 AbstractCegarLoop]: Abstraction has 60135 states and 75310 transitions. [2020-10-27 15:50:43,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:50:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 60135 states and 75310 transitions. [2020-10-27 15:50:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-27 15:50:43,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:50:43,879 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 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, 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] [2020-10-27 15:50:43,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 15:50:43,879 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:50:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:50:43,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1023917293, now seen corresponding path program 1 times [2020-10-27 15:50:43,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:50:43,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306062740] [2020-10-27 15:50:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:50:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:44,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:44,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:49,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:49,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-27 15:50:49,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:50:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 15:50:49,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:50:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-27 15:50:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 15:50:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:49,379 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:50:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:50:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:49,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:49,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:50:49,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:49,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:50:49,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:49,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:50:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:49,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:49,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:50:49,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:49,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:50:49,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:50:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:50:49,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:49,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:50:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:50:49,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:50:49,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 15:50:49,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:50:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 15:50:49,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:50:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:50:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:50:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:50:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:50:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-27 15:50:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:50:49,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking...