/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/Problem17_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:01:09,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:01:09,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:01:09,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:01:09,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:01:09,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:01:09,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:01:09,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:01:09,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:01:09,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:01:09,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:01:10,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:01:10,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:01:10,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:01:10,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:01:10,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:01:10,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:01:10,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:01:10,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:01:10,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:01:10,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:01:10,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:01:10,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:01:10,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:01:10,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:01:10,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:01:10,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:01:10,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:01:10,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:01:10,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:01:10,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:01:10,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:01:10,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:01:10,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:01:10,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:01:10,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:01:10,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:01:10,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:01:10,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:01:10,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:01:10,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:01:10,045 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 19:01:10,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:01:10,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:01:10,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:01:10,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:01:10,117 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:01:10,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:01:10,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:01:10,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:01:10,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:01:10,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:01:10,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:01:10,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:01:10,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:01:10,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:01:10,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:01:10,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:01:10,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:01:10,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:01:10,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:01:10,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:01:10,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:01:10,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:01:10,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:01:10,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:01:10,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:01:10,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:01:10,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:01:10,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:01:10,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:01:10,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:01:10,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:01:10,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:01:10,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:01:10,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:01:10,654 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:01:10,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2020-10-27 19:01:10,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0cdb2335/a9154b81cffb4d219bb791dfac65d238/FLAG2dd6ea94a [2020-10-27 19:01:11,903 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:01:11,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2020-10-27 19:01:11,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0cdb2335/a9154b81cffb4d219bb791dfac65d238/FLAG2dd6ea94a [2020-10-27 19:01:12,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0cdb2335/a9154b81cffb4d219bb791dfac65d238 [2020-10-27 19:01:12,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:01:12,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:01:12,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:01:12,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:01:12,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:01:12,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:01:12" (1/1) ... [2020-10-27 19:01:12,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a7665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:12, skipping insertion in model container [2020-10-27 19:01:12,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:01:12" (1/1) ... [2020-10-27 19:01:12,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:01:12,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:01:13,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:01:13,857 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:01:14,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:01:14,386 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:01:14,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14 WrapperNode [2020-10-27 19:01:14,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:01:14,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:01:14,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:01:14,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:01:14,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14" (1/1) ... [2020-10-27 19:01:14,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14" (1/1) ... [2020-10-27 19:01:14,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14" (1/1) ... [2020-10-27 19:01:14,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14" (1/1) ... [2020-10-27 19:01:14,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14" (1/1) ... [2020-10-27 19:01:14,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14" (1/1) ... [2020-10-27 19:01:14,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14" (1/1) ... [2020-10-27 19:01:14,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:01:14,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:01:14,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:01:14,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:01:14,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14" (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 19:01:14,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:01:14,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:01:14,785 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:01:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:01:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:01:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:01:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:01:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:01:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:01:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:01:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:01:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:01:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:01:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:01:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:01:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:01:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:01:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:01:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:01:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:01:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:01:24,716 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:01:24,716 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:01:24,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:01:24 BoogieIcfgContainer [2020-10-27 19:01:24,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:01:24,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:01:24,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:01:24,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:01:24,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:01:12" (1/3) ... [2020-10-27 19:01:24,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e31aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:01:24, skipping insertion in model container [2020-10-27 19:01:24,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:01:14" (2/3) ... [2020-10-27 19:01:24,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e31aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:01:24, skipping insertion in model container [2020-10-27 19:01:24,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:01:24" (3/3) ... [2020-10-27 19:01:24,734 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label53.c [2020-10-27 19:01:24,748 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:01:24,754 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:01:24,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:01:24,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:01:24,818 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:01:24,818 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:01:24,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:01:24,818 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:01:24,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:01:24,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:01:24,819 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:01:24,852 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 19:01:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 19:01:24,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:01:24,860 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] [2020-10-27 19:01:24,861 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:01:24,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:01:24,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1185737181, now seen corresponding path program 1 times [2020-10-27 19:01:24,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:01:24,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879950459] [2020-10-27 19:01:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:01:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:25,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:25,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 19:01:25,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:25,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-27 19:01:25,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:01:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:01:25,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 19:01:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:01:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:01:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:25,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:25,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:01:25,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:25,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 19:01:25,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:01:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:01:25,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:01:25,966 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 19:01:25,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879950459] [2020-10-27 19:01:25,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:01:25,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:01:25,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722936570] [2020-10-27 19:01:25,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:01:25,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:01:26,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:01:26,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:01:26,004 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-27 19:01:42,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:01:42,140 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-27 19:01:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:01:42,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 19:01:42,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:01:42,172 INFO L225 Difference]: With dead ends: 1694 [2020-10-27 19:01:42,172 INFO L226 Difference]: Without dead ends: 1010 [2020-10-27 19:01:42,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:01:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-27 19:01:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-27 19:01:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-27 19:01:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-27 19:01:42,337 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 21 [2020-10-27 19:01:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:01:42,338 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-27 19:01:42,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:01:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-27 19:01:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 19:01:42,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:01:42,345 INFO L422 BasicCegarLoop]: trace histogram [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 19:01:42,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:01:42,345 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:01:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:01:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1698623038, now seen corresponding path program 1 times [2020-10-27 19:01:42,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:01:42,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570569565] [2020-10-27 19:01:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:01:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:42,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:42,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:43,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 19:01:43,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:01:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1546 [2020-10-27 19:01:43,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:01:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 19:01:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 19:01:43,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:01:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:01:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:44,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:44,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:01:44,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:01:44,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:01:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:01:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:01:44,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:01:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:44,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:44,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:01:44,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:44,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 19:01:44,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:01:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 19:01:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:01:44,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570569565] [2020-10-27 19:01:44,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:01:44,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:01:44,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474301939] [2020-10-27 19:01:44,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:01:44,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:01:44,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:01:44,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:01:44,307 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 5 states. [2020-10-27 19:02:02,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:02:02,442 INFO L93 Difference]: Finished difference Result 2866 states and 4442 transitions. [2020-10-27 19:02:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:02:02,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-27 19:02:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:02:02,461 INFO L225 Difference]: With dead ends: 2866 [2020-10-27 19:02:02,462 INFO L226 Difference]: Without dead ends: 1880 [2020-10-27 19:02:02,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:02:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2020-10-27 19:02:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1876. [2020-10-27 19:02:02,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1876 states. [2020-10-27 19:02:02,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2567 transitions. [2020-10-27 19:02:02,600 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2567 transitions. Word has length 92 [2020-10-27 19:02:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:02:02,601 INFO L481 AbstractCegarLoop]: Abstraction has 1876 states and 2567 transitions. [2020-10-27 19:02:02,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:02:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2567 transitions. [2020-10-27 19:02:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 19:02:02,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:02:02,620 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:02:02,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:02:02,621 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:02:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:02:02,622 INFO L82 PathProgramCache]: Analyzing trace with hash 562135223, now seen corresponding path program 1 times [2020-10-27 19:02:02,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:02:02,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281187842] [2020-10-27 19:02:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:02:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:03,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:03,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 19:02:03,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-27 19:02:03,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:02:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:02:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 19:02:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:03,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:02:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:03,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:03,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:03,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:02:03,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:02:03,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:03,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:02:03,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:03,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:02:03,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:03,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:02:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:03,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:03,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:02:03,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:03,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 19:02:03,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:02:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:02:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:02:03,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281187842] [2020-10-27 19:02:03,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:02:03,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:02:03,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236782557] [2020-10-27 19:02:03,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:02:03,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:02:03,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:02:03,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:02:03,621 INFO L87 Difference]: Start difference. First operand 1876 states and 2567 transitions. Second operand 5 states. [2020-10-27 19:02:24,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:02:24,440 INFO L93 Difference]: Finished difference Result 3757 states and 5475 transitions. [2020-10-27 19:02:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:02:24,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-27 19:02:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:02:24,462 INFO L225 Difference]: With dead ends: 3757 [2020-10-27 19:02:24,462 INFO L226 Difference]: Without dead ends: 2773 [2020-10-27 19:02:24,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:02:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2020-10-27 19:02:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2767. [2020-10-27 19:02:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2767 states. [2020-10-27 19:02:24,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3643 transitions. [2020-10-27 19:02:24,615 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3643 transitions. Word has length 95 [2020-10-27 19:02:24,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:02:24,615 INFO L481 AbstractCegarLoop]: Abstraction has 2767 states and 3643 transitions. [2020-10-27 19:02:24,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:02:24,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3643 transitions. [2020-10-27 19:02:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 19:02:24,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:02:24,621 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:02:24,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:02:24,621 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:02:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:02:24,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1393940910, now seen corresponding path program 1 times [2020-10-27 19:02:24,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:02:24,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181089128] [2020-10-27 19:02:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:02:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:24,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:25,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:25,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 19:02:25,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:02:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-27 19:02:25,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:02:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 19:02:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 19:02:25,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:02:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:25,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:25,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:25,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:02:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:02:25,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:02:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:02:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:02:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:25,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:26,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:26,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 19:02:26,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 19:02:26,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:02:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 19:02:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:02:26,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181089128] [2020-10-27 19:02:26,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:02:26,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:02:26,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253767384] [2020-10-27 19:02:26,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:02:26,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:02:26,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:02:26,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:02:26,186 INFO L87 Difference]: Start difference. First operand 2767 states and 3643 transitions. Second operand 5 states. [2020-10-27 19:02:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:02:42,512 INFO L93 Difference]: Finished difference Result 5552 states and 7670 transitions. [2020-10-27 19:02:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:02:42,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-27 19:02:42,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:02:42,538 INFO L225 Difference]: With dead ends: 5552 [2020-10-27 19:02:42,538 INFO L226 Difference]: Without dead ends: 3677 [2020-10-27 19:02:42,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:02:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2020-10-27 19:02:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3664. [2020-10-27 19:02:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3664 states. [2020-10-27 19:02:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 4835 transitions. [2020-10-27 19:02:42,684 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 4835 transitions. Word has length 100 [2020-10-27 19:02:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:02:42,686 INFO L481 AbstractCegarLoop]: Abstraction has 3664 states and 4835 transitions. [2020-10-27 19:02:42,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:02:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 4835 transitions. [2020-10-27 19:02:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 19:02:42,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:02:42,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:02:42,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:02:42,691 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:02:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:02:42,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2014119261, now seen corresponding path program 1 times [2020-10-27 19:02:42,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:02:42,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926332637] [2020-10-27 19:02:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:02:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:43,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:43,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:43,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 19:02:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:02:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-10-27 19:02:43,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:02:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-27 19:02:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 19:02:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:02:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:44,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:44,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:02:44,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:44,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:02:44,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:44,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:02:44,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:44,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:02:44,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:44,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:02:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:44,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:44,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 19:02:44,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 19:02:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:02:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 19:02:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:02:44,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926332637] [2020-10-27 19:02:44,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:02:44,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:02:44,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665542537] [2020-10-27 19:02:44,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:02:44,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:02:44,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:02:44,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:02:44,297 INFO L87 Difference]: Start difference. First operand 3664 states and 4835 transitions. Second operand 6 states. [2020-10-27 19:03:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:03:02,560 INFO L93 Difference]: Finished difference Result 9950 states and 13425 transitions. [2020-10-27 19:03:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:03:02,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-27 19:03:02,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:03:02,613 INFO L225 Difference]: With dead ends: 9950 [2020-10-27 19:03:02,613 INFO L226 Difference]: Without dead ends: 7175 [2020-10-27 19:03:02,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:03:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-10-27 19:03:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 5432. [2020-10-27 19:03:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5432 states. [2020-10-27 19:03:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5432 states to 5432 states and 7506 transitions. [2020-10-27 19:03:02,852 INFO L78 Accepts]: Start accepts. Automaton has 5432 states and 7506 transitions. Word has length 123 [2020-10-27 19:03:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:03:02,853 INFO L481 AbstractCegarLoop]: Abstraction has 5432 states and 7506 transitions. [2020-10-27 19:03:02,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:03:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5432 states and 7506 transitions. [2020-10-27 19:03:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 19:03:02,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:03:02,858 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:03:02,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:03:02,859 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:03:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:03:02,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1171579658, now seen corresponding path program 1 times [2020-10-27 19:03:02,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:03:02,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546149953] [2020-10-27 19:03:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:03:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:07,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:07,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 19:03:07,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:03:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 19:03:07,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 19:03:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:03:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 19:03:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:08,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:03:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:08,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:08,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:08,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:03:08,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:08,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:03:08,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:03:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:03:08,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:08,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:03:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:08,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:08,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:03:08,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 19:03:08,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:03:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:03:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:08,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 19:03:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:09,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:09,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 19:03:09,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:03:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-27 19:03:09,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:03:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:03:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 19:03:09,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:03:09,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546149953] [2020-10-27 19:03:09,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:03:09,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:03:09,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529033507] [2020-10-27 19:03:09,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:03:09,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:03:09,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:03:09,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:03:09,336 INFO L87 Difference]: Start difference. First operand 5432 states and 7506 transitions. Second operand 7 states. [2020-10-27 19:03:10,306 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-27 19:03:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:03:28,685 INFO L93 Difference]: Finished difference Result 10575 states and 15149 transitions. [2020-10-27 19:03:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:03:28,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-27 19:03:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:03:28,724 INFO L225 Difference]: With dead ends: 10575 [2020-10-27 19:03:28,724 INFO L226 Difference]: Without dead ends: 6471 [2020-10-27 19:03:28,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:03:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2020-10-27 19:03:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 5498. [2020-10-27 19:03:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5498 states. [2020-10-27 19:03:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 7540 transitions. [2020-10-27 19:03:28,924 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 7540 transitions. Word has length 170 [2020-10-27 19:03:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:03:28,925 INFO L481 AbstractCegarLoop]: Abstraction has 5498 states and 7540 transitions. [2020-10-27 19:03:28,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:03:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 7540 transitions. [2020-10-27 19:03:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 19:03:28,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:03:28,930 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 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 19:03:28,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:03:28,930 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:03:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:03:28,932 INFO L82 PathProgramCache]: Analyzing trace with hash 588230933, now seen corresponding path program 1 times [2020-10-27 19:03:28,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:03:28,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526881717] [2020-10-27 19:03:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:03:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:29,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:30,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:33,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:33,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 19:03:33,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:03:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 19:03:33,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:03:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-27 19:03:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 19:03:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:03:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:03:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:34,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:34,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:03:34,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:03:34,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:03:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:03:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:03:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:34,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:34,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:03:34,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:34,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 19:03:34,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:03:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:34,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:03:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:03:34,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 19:03:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:34,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:34,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 19:03:34,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 19:03:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:03:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 19:03:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 19:03:34,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526881717] [2020-10-27 19:03:34,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:03:34,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:03:34,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058732023] [2020-10-27 19:03:34,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:03:34,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:03:34,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:03:34,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:03:34,407 INFO L87 Difference]: Start difference. First operand 5498 states and 7540 transitions. Second operand 5 states. [2020-10-27 19:03:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:03:53,384 INFO L93 Difference]: Finished difference Result 14498 states and 20400 transitions. [2020-10-27 19:03:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:03:53,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-27 19:03:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:03:53,423 INFO L225 Difference]: With dead ends: 14498 [2020-10-27 19:03:53,424 INFO L226 Difference]: Without dead ends: 9006 [2020-10-27 19:03:53,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:03:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9006 states. [2020-10-27 19:03:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9006 to 8569. [2020-10-27 19:03:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8569 states. [2020-10-27 19:03:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8569 states to 8569 states and 11410 transitions. [2020-10-27 19:03:53,641 INFO L78 Accepts]: Start accepts. Automaton has 8569 states and 11410 transitions. Word has length 178 [2020-10-27 19:03:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:03:53,642 INFO L481 AbstractCegarLoop]: Abstraction has 8569 states and 11410 transitions. [2020-10-27 19:03:53,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:03:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 8569 states and 11410 transitions. [2020-10-27 19:03:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-27 19:03:53,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:03:53,647 INFO L422 BasicCegarLoop]: trace histogram [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, 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 19:03:53,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:03:53,647 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:03:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:03:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash -424919445, now seen corresponding path program 1 times [2020-10-27 19:03:53,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:03:53,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570427929] [2020-10-27 19:03:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:03:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:55,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:55,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-27 19:03:55,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:03:55,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2066 [2020-10-27 19:03:55,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 19:03:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:03:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 19:03:55,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:55,960 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:03:55,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:03:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:55,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:55,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:03:55,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:55,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:03:55,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:03:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:03:55,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:03:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:56,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:56,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:56,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 19:03:56,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 19:03:56,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:03:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:03:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 19:03:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 19:03:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:56,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:56,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 19:03:56,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:03:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-27 19:03:56,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:03:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:03:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 19:03:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 19:03:56,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570427929] [2020-10-27 19:03:56,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:03:56,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:03:56,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482253370] [2020-10-27 19:03:56,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:03:56,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:03:56,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:03:56,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:03:56,806 INFO L87 Difference]: Start difference. First operand 8569 states and 11410 transitions. Second operand 8 states. [2020-10-27 19:03:56,993 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 19:04:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:04:30,122 INFO L93 Difference]: Finished difference Result 21657 states and 29366 transitions. [2020-10-27 19:04:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:04:30,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-27 19:04:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:04:30,178 INFO L225 Difference]: With dead ends: 21657 [2020-10-27 19:04:30,178 INFO L226 Difference]: Without dead ends: 13094 [2020-10-27 19:04:30,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:04:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13094 states. [2020-10-27 19:04:30,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13094 to 10016. [2020-10-27 19:04:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10016 states. [2020-10-27 19:04:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10016 states to 10016 states and 13046 transitions. [2020-10-27 19:04:30,492 INFO L78 Accepts]: Start accepts. Automaton has 10016 states and 13046 transitions. Word has length 183 [2020-10-27 19:04:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:04:30,493 INFO L481 AbstractCegarLoop]: Abstraction has 10016 states and 13046 transitions. [2020-10-27 19:04:30,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:04:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 10016 states and 13046 transitions. [2020-10-27 19:04:30,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 19:04:30,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:04:30,501 INFO L422 BasicCegarLoop]: trace histogram [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, 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 19:04:30,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:04:30,501 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:04:30,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:04:30,502 INFO L82 PathProgramCache]: Analyzing trace with hash -181933693, now seen corresponding path program 1 times [2020-10-27 19:04:30,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:04:30,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537051135] [2020-10-27 19:04:30,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:04:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:33,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:35,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:35,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-27 19:04:35,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:04:35,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 19:04:35,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-27 19:04:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:04:35,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-27 19:04:35,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:36,014 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:04:36,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:04:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:36,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:04:36,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:04:36,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:04:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:36,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:04:36,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:04:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:36,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:36,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:04:36,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:04:36,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 19:04:36,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:36,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:04:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:04:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:04:36,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:04:36,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 19:04:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:37,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:37,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 19:04:37,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:04:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-27 19:04:37,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 19:04:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:04:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 19:04:37,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:38,177 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-27 19:04:38,656 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-27 19:04:39,107 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-27 19:04:39,521 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-10-27 19:04:39,850 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-10-27 19:04:40,300 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-27 19:04:40,724 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-27 19:04:41,330 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-27 19:04:42,019 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-27 19:04:42,613 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-27 19:04:43,188 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-10-27 19:04:43,793 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-27 19:04:44,422 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-10-27 19:04:45,260 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-27 19:04:45,657 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-27 19:04:45,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 19:04:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:04:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:45,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:04:47,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:04:47,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 19:04:47,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:04:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-10-27 19:04:47,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:04:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 19:04:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:04:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 19:04:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:04:47,571 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-27 19:04:47,976 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-10-27 19:04:48,468 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-27 19:04:49,229 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-27 19:04:49,885 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-27 19:04:50,561 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-27 19:04:51,100 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 19:04:51,736 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-27 19:04:52,363 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-27 19:04:53,103 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 19:04:53,870 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-27 19:04:54,646 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-27 19:04:55,464 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-27 19:04:56,302 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-27 19:04:57,238 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74