/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/array-examples/standard_init3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:22:49,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:22:49,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:22:49,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:22:49,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:22:49,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:22:50,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:22:50,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:22:50,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:22:50,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:22:50,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:22:50,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:22:50,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:22:50,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:22:50,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:22:50,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:22:50,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:22:50,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:22:50,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:22:50,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:22:50,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:22:50,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:22:50,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:22:50,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:22:50,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:22:50,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:22:50,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:22:50,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:22:50,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:22:50,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:22:50,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:22:50,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:22:50,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:22:50,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:22:50,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:22:50,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:22:50,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:22:50,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:22:50,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:22:50,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:22:50,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:22:50,108 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 14:22:50,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:22:50,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:22:50,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:22:50,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:22:50,135 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:22:50,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:22:50,136 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:22:50,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:22:50,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:22:50,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:22:50,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:22:50,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:22:50,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:22:50,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:22:50,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:22:50,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:22:50,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:22:50,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:22:50,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:22:50,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:22:50,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:22:50,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:22:50,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:22:50,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:22:50,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:22:50,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:22:50,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:22:50,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:22:50,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:22:50,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:22:50,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:22:50,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:22:50,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:22:50,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:22:50,532 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:22:50,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2020-10-27 14:22:50,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52cf448b2/f71d5dac9fd64fb991eda3e65c8fdd1a/FLAG5c3f34b3b [2020-10-27 14:22:51,245 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:22:51,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2020-10-27 14:22:51,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52cf448b2/f71d5dac9fd64fb991eda3e65c8fdd1a/FLAG5c3f34b3b [2020-10-27 14:22:51,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52cf448b2/f71d5dac9fd64fb991eda3e65c8fdd1a [2020-10-27 14:22:51,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:22:51,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:22:51,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:51,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:22:51,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:22:51,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:51" (1/1) ... [2020-10-27 14:22:51,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a84c225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51, skipping insertion in model container [2020-10-27 14:22:51,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:51" (1/1) ... [2020-10-27 14:22:51,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:22:51,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:22:51,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:51,848 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:22:51,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:51,885 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:22:51,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51 WrapperNode [2020-10-27 14:22:51,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:51,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:22:51,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:22:51,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:22:51,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51" (1/1) ... [2020-10-27 14:22:51,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51" (1/1) ... [2020-10-27 14:22:51,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51" (1/1) ... [2020-10-27 14:22:51,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51" (1/1) ... [2020-10-27 14:22:51,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51" (1/1) ... [2020-10-27 14:22:51,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51" (1/1) ... [2020-10-27 14:22:51,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51" (1/1) ... [2020-10-27 14:22:51,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:22:51,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:22:51,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:22:51,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:22:51,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51" (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 14:22:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:22:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:22:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:22:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:22:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:22:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:22:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:22:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:22:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:22:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:22:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:22:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:22:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:22:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:22:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:22:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:22:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:22:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:22:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:22:52,299 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:22:52,299 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 14:22:52,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:52 BoogieIcfgContainer [2020-10-27 14:22:52,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:22:52,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:22:52,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:22:52,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:22:52,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:22:51" (1/3) ... [2020-10-27 14:22:52,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f59e74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:52, skipping insertion in model container [2020-10-27 14:22:52,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:51" (2/3) ... [2020-10-27 14:22:52,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f59e74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:52, skipping insertion in model container [2020-10-27 14:22:52,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:52" (3/3) ... [2020-10-27 14:22:52,313 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init3_ground-1.i [2020-10-27 14:22:52,329 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:22:52,336 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:22:52,364 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:22:52,425 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:22:52,425 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:22:52,425 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:22:52,426 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:22:52,426 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:22:52,426 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:22:52,426 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:22:52,426 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:22:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-27 14:22:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 14:22:52,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:52,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:52,464 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1280200698, now seen corresponding path program 1 times [2020-10-27 14:22:52,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:52,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209090244] [2020-10-27 14:22:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:52,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:53,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:53,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:22:53,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:22:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-27 14:22:53,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:22:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:22:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:22:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:22:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:53,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:53,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:53,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:53,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:22:53,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:53,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:22:53,274 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 14:22:53,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209090244] [2020-10-27 14:22:53,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:22:53,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:22:53,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766444356] [2020-10-27 14:22:53,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:22:53,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:53,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:22:53,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:53,302 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-10-27 14:22:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:53,475 INFO L93 Difference]: Finished difference Result 57 states and 81 transitions. [2020-10-27 14:22:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:22:53,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-27 14:22:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:53,485 INFO L225 Difference]: With dead ends: 57 [2020-10-27 14:22:53,486 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 14:22:53,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 14:22:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-27 14:22:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 14:22:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-27 14:22:53,534 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2020-10-27 14:22:53,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:53,534 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-27 14:22:53,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:22:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-27 14:22:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:22:53,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:53,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:53,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:22:53,537 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:53,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1629215179, now seen corresponding path program 1 times [2020-10-27 14:22:53,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:53,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185370058] [2020-10-27 14:22:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:53,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:54,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:54,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:22:54,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:54,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-27 14:22:54,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:22:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:22:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 14:22:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:54,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:54,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:54,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:54,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:54,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:22:54,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:54,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:22:54,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185370058] [2020-10-27 14:22:54,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:54,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:22:54,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921020556] [2020-10-27 14:22:54,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:22:54,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:22:54,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:54,633 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-27 14:22:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:54,729 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-10-27 14:22:54,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:22:54,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 14:22:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:54,731 INFO L225 Difference]: With dead ends: 49 [2020-10-27 14:22:54,731 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 14:22:54,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 14:22:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-27 14:22:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 14:22:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-27 14:22:54,741 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-10-27 14:22:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:54,742 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-27 14:22:54,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:22:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-27 14:22:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:22:54,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:54,743 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:54,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:22:54,744 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:54,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:54,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1446473942, now seen corresponding path program 2 times [2020-10-27 14:22:54,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:54,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606126653] [2020-10-27 14:22:54,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:54,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:54,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:22:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:56,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1759 [2020-10-27 14:22:56,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:22:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:22:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:22:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:56,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:56,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:56,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:56,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:22:56,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:56,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:56,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:56,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:22:56,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606126653] [2020-10-27 14:22:56,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:56,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:22:56,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326392053] [2020-10-27 14:22:56,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:22:56,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:56,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:22:56,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:56,591 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-10-27 14:22:56,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:56,685 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2020-10-27 14:22:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:22:56,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-27 14:22:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:56,687 INFO L225 Difference]: With dead ends: 54 [2020-10-27 14:22:56,687 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 14:22:56,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 14:22:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-27 14:22:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:22:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-27 14:22:56,696 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 25 [2020-10-27 14:22:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:56,697 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-27 14:22:56,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:22:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-27 14:22:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:22:56,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:56,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:56,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:22:56,699 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:56,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:56,700 INFO L82 PathProgramCache]: Analyzing trace with hash -120934037, now seen corresponding path program 3 times [2020-10-27 14:22:56,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:56,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011222884] [2020-10-27 14:22:56,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:57,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:59,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:59,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:22:59,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2815 [2020-10-27 14:22:59,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:22:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:22:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:22:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:59,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:59,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:59,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:22:59,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:22:59,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011222884] [2020-10-27 14:22:59,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:59,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:22:59,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359719996] [2020-10-27 14:22:59,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:22:59,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:59,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:22:59,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:59,613 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 7 states. [2020-10-27 14:22:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:59,730 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-27 14:22:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:22:59,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-27 14:22:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:59,732 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:22:59,732 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:22:59,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:59,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:22:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-27 14:22:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 14:22:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-27 14:22:59,741 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 28 [2020-10-27 14:22:59,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:59,742 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-27 14:22:59,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:22:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-27 14:22:59,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:22:59,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:59,744 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:59,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:22:59,744 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:59,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1197681482, now seen corresponding path program 4 times [2020-10-27 14:22:59,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:59,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249284858] [2020-10-27 14:22:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:59,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:00,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:04,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:04,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 14:23:04,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4787 [2020-10-27 14:23:04,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:23:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:23:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:23:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:04,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:04,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:04,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:04,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:04,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:23:04,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:04,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 14:23:04,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249284858] [2020-10-27 14:23:04,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:04,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:23:04,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921148750] [2020-10-27 14:23:04,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:23:04,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:04,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:23:04,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:23:04,688 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 8 states. [2020-10-27 14:23:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:04,805 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-10-27 14:23:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:23:04,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-27 14:23:04,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:04,807 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:23:04,807 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 14:23:04,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:23:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 14:23:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-27 14:23:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:23:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-27 14:23:04,816 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 31 [2020-10-27 14:23:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:04,816 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-27 14:23:04,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:23:04,817 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-27 14:23:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:23:04,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:04,818 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:04,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:23:04,818 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:04,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:04,819 INFO L82 PathProgramCache]: Analyzing trace with hash 46878987, now seen corresponding path program 5 times [2020-10-27 14:23:04,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:04,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997217875] [2020-10-27 14:23:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:04,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:09,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:09,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:23:09,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:23:09,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:23:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:23:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:23:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:09,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:09,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:09,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:09,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:09,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:09,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:23:09,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:09,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:23:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-27 14:23:09,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997217875] [2020-10-27 14:23:09,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:09,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:23:09,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918943090] [2020-10-27 14:23:09,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:23:09,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:09,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:23:09,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:23:09,970 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 9 states. [2020-10-27 14:23:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:10,097 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-10-27 14:23:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:23:10,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-27 14:23:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:10,099 INFO L225 Difference]: With dead ends: 69 [2020-10-27 14:23:10,099 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:23:10,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:23:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:23:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-27 14:23:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 14:23:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-10-27 14:23:10,110 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 34 [2020-10-27 14:23:10,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:10,110 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-10-27 14:23:10,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:23:10,110 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-10-27 14:23:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:23:10,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:10,112 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:10,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:23:10,112 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:10,113 INFO L82 PathProgramCache]: Analyzing trace with hash 595439766, now seen corresponding path program 6 times [2020-10-27 14:23:10,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:10,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047514503] [2020-10-27 14:23:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:10,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:10,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:15,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:23:15,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:23:15,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:23:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:23:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:23:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:15,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:15,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:15,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:15,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:15,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:23:15,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:15,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:15,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:15,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:15,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 14:23:15,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047514503] [2020-10-27 14:23:15,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:15,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:23:15,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414753949] [2020-10-27 14:23:15,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:23:15,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:15,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:23:15,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:15,243 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 10 states. [2020-10-27 14:23:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:15,372 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-10-27 14:23:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:23:15,372 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-27 14:23:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:15,373 INFO L225 Difference]: With dead ends: 74 [2020-10-27 14:23:15,373 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 14:23:15,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 14:23:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 14:23:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 14:23:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-27 14:23:15,383 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 37 [2020-10-27 14:23:15,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:15,385 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-27 14:23:15,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:23:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-27 14:23:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:23:15,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:15,392 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:15,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:23:15,392 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:15,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash -525616981, now seen corresponding path program 7 times [2020-10-27 14:23:15,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:15,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45567060] [2020-10-27 14:23:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:15,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:17,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:20,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:20,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:23:20,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:20,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:23:20,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:23:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:23:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 14:23:20,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:20,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:20,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:20,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:20,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:20,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:23:20,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:20,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-27 14:23:20,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45567060] [2020-10-27 14:23:20,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:20,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:23:20,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331248995] [2020-10-27 14:23:20,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:23:20,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:20,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:23:20,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:20,541 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 11 states. [2020-10-27 14:23:20,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:20,706 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2020-10-27 14:23:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:23:20,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-27 14:23:20,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:20,708 INFO L225 Difference]: With dead ends: 79 [2020-10-27 14:23:20,708 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 14:23:20,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 14:23:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-27 14:23:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 14:23:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-10-27 14:23:20,720 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 40 [2020-10-27 14:23:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:20,720 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-10-27 14:23:20,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:23:20,720 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-10-27 14:23:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:23:20,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:20,723 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:20,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:23:20,723 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:20,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1340867702, now seen corresponding path program 8 times [2020-10-27 14:23:20,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:20,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595628069] [2020-10-27 14:23:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:20,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:25,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:25,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:23:25,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:25,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:23:25,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:23:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:23:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:23:25,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:25,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:25,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:25,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:25,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:25,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 14:23:25,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595628069] [2020-10-27 14:23:25,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:25,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:23:25,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041606865] [2020-10-27 14:23:25,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:23:25,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:25,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:23:25,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:25,889 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 12 states. [2020-10-27 14:23:26,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:26,003 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-27 14:23:26,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:23:26,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-27 14:23:26,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:26,004 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:23:26,004 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 14:23:26,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 14:23:26,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-27 14:23:26,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 14:23:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-10-27 14:23:26,012 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 43 [2020-10-27 14:23:26,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:26,012 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-10-27 14:23:26,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:23:26,012 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-10-27 14:23:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:23:26,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:26,013 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:26,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:23:26,013 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:26,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:26,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1048176715, now seen corresponding path program 9 times [2020-10-27 14:23:26,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:26,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656041200] [2020-10-27 14:23:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:27,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:31,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:31,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:23:31,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:31,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:23:31,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:23:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:23:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:23:31,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:31,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:31,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:31,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:31,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:23:31,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:31,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:31,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 14:23:31,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656041200] [2020-10-27 14:23:31,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:31,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:23:31,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450579219] [2020-10-27 14:23:31,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:23:31,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:31,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:23:31,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:31,202 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 13 states. [2020-10-27 14:23:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:31,401 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-10-27 14:23:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:23:31,401 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-27 14:23:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:31,403 INFO L225 Difference]: With dead ends: 89 [2020-10-27 14:23:31,403 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 14:23:31,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 14:23:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-27 14:23:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 14:23:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-27 14:23:31,412 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 46 [2020-10-27 14:23:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:31,412 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-27 14:23:31,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:23:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-27 14:23:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:23:31,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:31,413 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:31,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:23:31,414 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:31,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:31,414 INFO L82 PathProgramCache]: Analyzing trace with hash -864432042, now seen corresponding path program 10 times [2020-10-27 14:23:31,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:31,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307781256] [2020-10-27 14:23:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:31,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:31,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:36,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:36,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:23:36,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:23:36,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:23:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:23:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:23:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:36,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:36,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:36,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:36,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:36,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:36,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:36,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:36,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:36,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:36,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:36,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-27 14:23:36,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307781256] [2020-10-27 14:23:36,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:36,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:23:36,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441784233] [2020-10-27 14:23:36,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:23:36,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:36,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:23:36,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:36,609 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 14 states. [2020-10-27 14:23:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:36,779 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-10-27 14:23:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:23:36,780 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-27 14:23:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:36,780 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:23:36,781 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 14:23:36,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 14:23:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-27 14:23:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 14:23:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-27 14:23:36,792 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 49 [2020-10-27 14:23:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:36,793 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-27 14:23:36,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:23:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-27 14:23:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:23:36,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:36,798 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:36,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:23:36,799 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:36,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:36,799 INFO L82 PathProgramCache]: Analyzing trace with hash -222044181, now seen corresponding path program 11 times [2020-10-27 14:23:36,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:36,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788028232] [2020-10-27 14:23:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:41,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:41,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:23:41,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:23:41,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:23:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:23:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 14:23:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:42,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:42,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:42,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:42,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:42,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:42,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:42,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-27 14:23:42,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788028232] [2020-10-27 14:23:42,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:42,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:23:42,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786391811] [2020-10-27 14:23:42,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:23:42,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:42,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:23:42,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:42,017 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 15 states. [2020-10-27 14:23:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:42,225 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-10-27 14:23:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:23:42,226 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-27 14:23:42,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:42,227 INFO L225 Difference]: With dead ends: 99 [2020-10-27 14:23:42,227 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 14:23:42,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 14:23:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-27 14:23:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:23:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-27 14:23:42,237 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 52 [2020-10-27 14:23:42,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:42,237 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-27 14:23:42,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:23:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-27 14:23:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 14:23:42,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:42,238 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:42,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:23:42,238 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:42,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:42,239 INFO L82 PathProgramCache]: Analyzing trace with hash 490279990, now seen corresponding path program 12 times [2020-10-27 14:23:42,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:42,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684940701] [2020-10-27 14:23:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:42,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:47,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:47,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:23:47,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:47,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:23:47,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:23:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:23:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:23:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:47,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:47,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:47,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:47,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:47,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-27 14:23:47,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684940701] [2020-10-27 14:23:47,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:47,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:23:47,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149213665] [2020-10-27 14:23:47,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:23:47,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:47,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:23:47,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:47,481 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 16 states. [2020-10-27 14:23:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:47,660 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2020-10-27 14:23:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:23:47,660 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-27 14:23:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:47,661 INFO L225 Difference]: With dead ends: 104 [2020-10-27 14:23:47,661 INFO L226 Difference]: Without dead ends: 63 [2020-10-27 14:23:47,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:47,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-27 14:23:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-27 14:23:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-27 14:23:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-10-27 14:23:47,677 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 55 [2020-10-27 14:23:47,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:47,677 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-10-27 14:23:47,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:23:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-10-27 14:23:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:23:47,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:47,678 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:47,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:23:47,679 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:47,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:47,681 INFO L82 PathProgramCache]: Analyzing trace with hash -560488565, now seen corresponding path program 13 times [2020-10-27 14:23:47,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:47,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940030130] [2020-10-27 14:23:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:47,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:47,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:52,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:52,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:23:52,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:23:52,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:23:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:23:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:23:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:52,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:52,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:52,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:52,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:52,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:52,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-27 14:23:52,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940030130] [2020-10-27 14:23:52,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:52,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:23:52,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711313984] [2020-10-27 14:23:52,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:23:52,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:52,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:23:52,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:52,963 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 17 states. [2020-10-27 14:23:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:53,204 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2020-10-27 14:23:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:23:53,205 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-27 14:23:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:53,206 INFO L225 Difference]: With dead ends: 109 [2020-10-27 14:23:53,206 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:23:53,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:23:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-27 14:23:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 14:23:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-10-27 14:23:53,229 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 58 [2020-10-27 14:23:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:53,230 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-10-27 14:23:53,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:23:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-10-27 14:23:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:23:53,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:53,233 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:53,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:23:53,234 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:53,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:53,236 INFO L82 PathProgramCache]: Analyzing trace with hash -608448490, now seen corresponding path program 14 times [2020-10-27 14:23:53,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:53,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386764592] [2020-10-27 14:23:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:58,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:58,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:23:58,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:23:58,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:23:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:23:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:23:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:58,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:58,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:58,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:58,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:58,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-27 14:23:58,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386764592] [2020-10-27 14:23:58,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:58,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:23:58,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103625676] [2020-10-27 14:23:58,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:23:58,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:58,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:23:58,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:58,567 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 18 states. [2020-10-27 14:23:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:58,834 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-10-27 14:23:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:23:58,834 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-27 14:23:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:58,835 INFO L225 Difference]: With dead ends: 114 [2020-10-27 14:23:58,835 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 14:23:58,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 14:23:58,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-27 14:23:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 14:23:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-27 14:23:58,850 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 61 [2020-10-27 14:23:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:58,850 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-27 14:23:58,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:23:58,851 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-27 14:23:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:23:58,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:58,855 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:58,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:23:58,856 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:58,856 INFO L82 PathProgramCache]: Analyzing trace with hash -847042773, now seen corresponding path program 15 times [2020-10-27 14:23:58,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:58,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717720328] [2020-10-27 14:23:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:58,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:59,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:03,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:03,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:24:03,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:24:03,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:24:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:24:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:24:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:04,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:04,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:04,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:04,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-27 14:24:04,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717720328] [2020-10-27 14:24:04,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:04,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:24:04,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157483015] [2020-10-27 14:24:04,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:24:04,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:04,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:24:04,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:24:04,162 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 19 states. [2020-10-27 14:24:04,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:04,394 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2020-10-27 14:24:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:24:04,395 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-27 14:24:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:04,397 INFO L225 Difference]: With dead ends: 119 [2020-10-27 14:24:04,397 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 14:24:04,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:24:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 14:24:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-27 14:24:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:24:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-10-27 14:24:04,413 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 64 [2020-10-27 14:24:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:04,413 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-10-27 14:24:04,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:24:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-10-27 14:24:04,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 14:24:04,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:04,414 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:04,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:24:04,414 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:04,415 INFO L82 PathProgramCache]: Analyzing trace with hash -686554122, now seen corresponding path program 16 times [2020-10-27 14:24:04,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:04,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488198346] [2020-10-27 14:24:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:04,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 14:24:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:24:09,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:24:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:24:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:24:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:09,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:09,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:09,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:09,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:09,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-27 14:24:09,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488198346] [2020-10-27 14:24:09,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:09,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:24:09,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118829559] [2020-10-27 14:24:09,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:24:09,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:09,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:24:09,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:24:09,759 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 20 states. [2020-10-27 14:24:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:09,973 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2020-10-27 14:24:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:24:09,973 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-27 14:24:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:09,974 INFO L225 Difference]: With dead ends: 124 [2020-10-27 14:24:09,974 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 14:24:09,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:24:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 14:24:09,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-27 14:24:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 14:24:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-10-27 14:24:09,983 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 67 [2020-10-27 14:24:09,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:09,983 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-10-27 14:24:09,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:24:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-10-27 14:24:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:24:09,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:09,984 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:09,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:24:09,985 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:09,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:09,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1435793099, now seen corresponding path program 17 times [2020-10-27 14:24:09,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:09,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611554346] [2020-10-27 14:24:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:10,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:15,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 14:24:15,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:24:15,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:24:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:24:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 14:24:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:15,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:15,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:15,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:15,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:15,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-27 14:24:15,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611554346] [2020-10-27 14:24:15,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:15,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:24:15,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325767067] [2020-10-27 14:24:15,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:24:15,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:15,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:24:15,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:15,336 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 21 states. [2020-10-27 14:24:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:15,576 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2020-10-27 14:24:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:24:15,576 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 70 [2020-10-27 14:24:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:15,577 INFO L225 Difference]: With dead ends: 129 [2020-10-27 14:24:15,577 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:24:15,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:24:15,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-27 14:24:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 14:24:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-10-27 14:24:15,585 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 70 [2020-10-27 14:24:15,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:15,586 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-10-27 14:24:15,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:24:15,586 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-10-27 14:24:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:24:15,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:15,587 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:15,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:24:15,587 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:15,587 INFO L82 PathProgramCache]: Analyzing trace with hash 869511126, now seen corresponding path program 18 times [2020-10-27 14:24:15,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:15,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844647111] [2020-10-27 14:24:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:15,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:15,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:20,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:20,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 14:24:20,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:20,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:24:20,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:24:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:24:20,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:24:20,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:20,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:20,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:20,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:20,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:24:20,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:20,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2020-10-27 14:24:20,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844647111] [2020-10-27 14:24:20,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:20,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:24:20,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478528251] [2020-10-27 14:24:20,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:24:20,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:20,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:24:20,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:20,976 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 22 states. [2020-10-27 14:24:21,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:21,163 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-27 14:24:21,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:24:21,163 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 73 [2020-10-27 14:24:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:21,164 INFO L225 Difference]: With dead ends: 134 [2020-10-27 14:24:21,164 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 14:24:21,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:21,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 14:24:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-27 14:24:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 14:24:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-10-27 14:24:21,173 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 73 [2020-10-27 14:24:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:21,173 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-10-27 14:24:21,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:24:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-10-27 14:24:21,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:24:21,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:21,174 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:21,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:24:21,174 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:21,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:21,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1218867605, now seen corresponding path program 19 times [2020-10-27 14:24:21,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:21,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743869569] [2020-10-27 14:24:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:26,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:26,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 14:24:26,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:24:26,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:24:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:24:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 14:24:26,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:26,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:26,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:26,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:26,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:26,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:26,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-27 14:24:26,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743869569] [2020-10-27 14:24:26,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:26,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:24:26,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036549396] [2020-10-27 14:24:26,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:24:26,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:26,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:24:26,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:26,593 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 23 states. [2020-10-27 14:24:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:26,826 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2020-10-27 14:24:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:24:26,827 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2020-10-27 14:24:26,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:26,828 INFO L225 Difference]: With dead ends: 139 [2020-10-27 14:24:26,829 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 14:24:26,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 14:24:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-27 14:24:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:24:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2020-10-27 14:24:26,838 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 76 [2020-10-27 14:24:26,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:26,838 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2020-10-27 14:24:26,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:24:26,839 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2020-10-27 14:24:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:24:26,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:26,840 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:26,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:24:26,841 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:26,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1945316426, now seen corresponding path program 20 times [2020-10-27 14:24:26,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:26,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547543515] [2020-10-27 14:24:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:31,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 14:24:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:24:31,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:24:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:24:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:24:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:32,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:32,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:32,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:32,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:32,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:32,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:24:32,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:32,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:32,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:32,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-27 14:24:32,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547543515] [2020-10-27 14:24:32,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:32,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:24:32,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461333170] [2020-10-27 14:24:32,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:24:32,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:32,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:24:32,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:32,273 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand 24 states. [2020-10-27 14:24:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:32,484 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2020-10-27 14:24:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:24:32,485 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 79 [2020-10-27 14:24:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:32,486 INFO L225 Difference]: With dead ends: 144 [2020-10-27 14:24:32,486 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 14:24:32,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 14:24:32,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-27 14:24:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 14:24:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2020-10-27 14:24:32,493 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 79 [2020-10-27 14:24:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:32,494 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2020-10-27 14:24:32,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:24:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2020-10-27 14:24:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:24:32,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:32,495 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:32,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:24:32,495 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:32,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1109365237, now seen corresponding path program 21 times [2020-10-27 14:24:32,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:32,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558233103] [2020-10-27 14:24:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:32,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:37,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:37,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 14:24:37,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:24:37,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:24:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:24:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:24:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:37,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:37,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:37,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:37,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:24:37,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-27 14:24:37,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558233103] [2020-10-27 14:24:37,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:37,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:24:37,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848459661] [2020-10-27 14:24:37,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:24:37,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:37,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:24:37,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:37,954 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand 25 states. [2020-10-27 14:24:38,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:38,222 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2020-10-27 14:24:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:24:38,223 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 82 [2020-10-27 14:24:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:38,224 INFO L225 Difference]: With dead ends: 149 [2020-10-27 14:24:38,224 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 14:24:38,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 14:24:38,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-27 14:24:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 14:24:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2020-10-27 14:24:38,234 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 82 [2020-10-27 14:24:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:38,234 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2020-10-27 14:24:38,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:24:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2020-10-27 14:24:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:24:38,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:38,237 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:38,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:24:38,237 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:38,238 INFO L82 PathProgramCache]: Analyzing trace with hash 256995222, now seen corresponding path program 22 times [2020-10-27 14:24:38,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:38,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864255924] [2020-10-27 14:24:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:43,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:43,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 14:24:43,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:24:43,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:24:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:24:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:24:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:43,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:43,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:43,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:43,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:43,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:24:43,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:43,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2020-10-27 14:24:43,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864255924] [2020-10-27 14:24:43,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:43,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:24:43,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612720942] [2020-10-27 14:24:43,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:24:43,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:43,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:24:43,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:43,742 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 26 states. [2020-10-27 14:24:43,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:43,983 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2020-10-27 14:24:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:24:43,985 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 85 [2020-10-27 14:24:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:43,986 INFO L225 Difference]: With dead ends: 154 [2020-10-27 14:24:43,986 INFO L226 Difference]: Without dead ends: 93 [2020-10-27 14:24:43,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-27 14:24:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-27 14:24:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 14:24:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-10-27 14:24:43,992 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 85 [2020-10-27 14:24:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:43,993 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-10-27 14:24:43,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:24:43,993 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-10-27 14:24:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:24:43,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:43,994 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:43,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:24:43,994 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:43,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1632168533, now seen corresponding path program 23 times [2020-10-27 14:24:43,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:43,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683386791] [2020-10-27 14:24:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:49,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:49,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 14:24:49,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:49,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:24:49,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:24:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:24:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 14:24:49,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:49,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:49,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:49,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:49,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-27 14:24:49,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683386791] [2020-10-27 14:24:49,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:49,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:24:49,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287548136] [2020-10-27 14:24:49,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:24:49,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:49,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:24:49,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:49,537 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand 27 states. [2020-10-27 14:24:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:49,859 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2020-10-27 14:24:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:24:49,859 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 88 [2020-10-27 14:24:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:49,860 INFO L225 Difference]: With dead ends: 159 [2020-10-27 14:24:49,861 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 14:24:49,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 14:24:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-27 14:24:49,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:24:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2020-10-27 14:24:49,870 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 88 [2020-10-27 14:24:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:49,871 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2020-10-27 14:24:49,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:24:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2020-10-27 14:24:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 14:24:49,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:49,872 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:49,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:24:49,874 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:49,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1565293706, now seen corresponding path program 24 times [2020-10-27 14:24:49,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:49,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541530826] [2020-10-27 14:24:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:54,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:54,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 14:24:54,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:54,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:24:54,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:24:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:24:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:24:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:55,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:55,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:55,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:55,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:55,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:55,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2020-10-27 14:24:55,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541530826] [2020-10-27 14:24:55,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:55,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:24:55,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145953951] [2020-10-27 14:24:55,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:24:55,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:55,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:24:55,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:55,443 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand 28 states. [2020-10-27 14:24:55,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:55,774 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2020-10-27 14:24:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:24:55,775 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 91 [2020-10-27 14:24:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:55,776 INFO L225 Difference]: With dead ends: 164 [2020-10-27 14:24:55,776 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 14:24:55,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 14:24:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-27 14:24:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-27 14:24:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2020-10-27 14:24:55,784 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 91 [2020-10-27 14:24:55,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:55,785 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2020-10-27 14:24:55,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:24:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2020-10-27 14:24:55,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:24:55,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:55,786 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:55,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:24:55,786 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:55,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:55,787 INFO L82 PathProgramCache]: Analyzing trace with hash -638876341, now seen corresponding path program 25 times [2020-10-27 14:24:55,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:55,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459221307] [2020-10-27 14:24:55,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:00,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:00,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:25:00,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:25:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:25:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 14:25:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 14:25:00,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:01,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:01,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:01,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:25:01,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2020-10-27 14:25:01,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459221307] [2020-10-27 14:25:01,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:01,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:25:01,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788826209] [2020-10-27 14:25:01,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:25:01,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:01,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:25:01,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:25:01,422 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand 29 states. [2020-10-27 14:25:01,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:01,789 INFO L93 Difference]: Finished difference Result 169 states and 177 transitions. [2020-10-27 14:25:01,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:25:01,790 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 94 [2020-10-27 14:25:01,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:01,791 INFO L225 Difference]: With dead ends: 169 [2020-10-27 14:25:01,791 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:25:01,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:25:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:25:01,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-27 14:25:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 14:25:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2020-10-27 14:25:01,808 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 94 [2020-10-27 14:25:01,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:01,809 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2020-10-27 14:25:01,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:25:01,809 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2020-10-27 14:25:01,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 14:25:01,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:01,810 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:01,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:25:01,810 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:01,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:01,813 INFO L82 PathProgramCache]: Analyzing trace with hash 12914518, now seen corresponding path program 26 times [2020-10-27 14:25:01,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:01,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612877308] [2020-10-27 14:25:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:01,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:01,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:06,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:06,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 14:25:06,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:25:06,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:25:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 14:25:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:25:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:07,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:07,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:25:07,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2020-10-27 14:25:07,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612877308] [2020-10-27 14:25:07,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:07,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:25:07,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482233024] [2020-10-27 14:25:07,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:25:07,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:07,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:25:07,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:25:07,449 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand 30 states. [2020-10-27 14:25:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:07,773 INFO L93 Difference]: Finished difference Result 174 states and 182 transitions. [2020-10-27 14:25:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:25:07,773 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 97 [2020-10-27 14:25:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:07,774 INFO L225 Difference]: With dead ends: 174 [2020-10-27 14:25:07,775 INFO L226 Difference]: Without dead ends: 105 [2020-10-27 14:25:07,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:25:07,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-27 14:25:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-27 14:25:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-27 14:25:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2020-10-27 14:25:07,782 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 97 [2020-10-27 14:25:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:07,783 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2020-10-27 14:25:07,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:25:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2020-10-27 14:25:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:25:07,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:07,784 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:07,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:25:07,784 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:07,785 INFO L82 PathProgramCache]: Analyzing trace with hash 436976875, now seen corresponding path program 27 times [2020-10-27 14:25:07,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:07,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413717605] [2020-10-27 14:25:07,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:07,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:07,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:12,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:12,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 14:25:12,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:25:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:25:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 14:25:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:25:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:13,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:13,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:13,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:13,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:13,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:13,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2020-10-27 14:25:13,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413717605] [2020-10-27 14:25:13,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:13,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:25:13,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206068130] [2020-10-27 14:25:13,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:25:13,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:13,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:25:13,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:13,490 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 31 states. [2020-10-27 14:25:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:13,728 INFO L93 Difference]: Finished difference Result 179 states and 187 transitions. [2020-10-27 14:25:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:25:13,728 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 100 [2020-10-27 14:25:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:13,729 INFO L225 Difference]: With dead ends: 179 [2020-10-27 14:25:13,730 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 14:25:13,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 14:25:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-27 14:25:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:25:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2020-10-27 14:25:13,739 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 100 [2020-10-27 14:25:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:13,739 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2020-10-27 14:25:13,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:25:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2020-10-27 14:25:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 14:25:13,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:13,741 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:13,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:25:13,741 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash -644345034, now seen corresponding path program 28 times [2020-10-27 14:25:13,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:13,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667545926] [2020-10-27 14:25:13,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:18,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:18,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 14:25:18,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:25:18,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:18,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:25:18,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 14:25:18,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:25:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:19,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:19,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:19,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:19,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:19,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:19,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:19,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2020-10-27 14:25:19,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667545926] [2020-10-27 14:25:19,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:19,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:25:19,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725054425] [2020-10-27 14:25:19,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:25:19,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:19,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:25:19,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:19,432 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand 32 states. [2020-10-27 14:25:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:19,811 INFO L93 Difference]: Finished difference Result 184 states and 192 transitions. [2020-10-27 14:25:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:25:19,812 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 103 [2020-10-27 14:25:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:19,813 INFO L225 Difference]: With dead ends: 184 [2020-10-27 14:25:19,813 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 14:25:19,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 14:25:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-27 14:25:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 14:25:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2020-10-27 14:25:19,822 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 103 [2020-10-27 14:25:19,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:19,824 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2020-10-27 14:25:19,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:25:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2020-10-27 14:25:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 14:25:19,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:19,825 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:19,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:25:19,825 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:19,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:19,826 INFO L82 PathProgramCache]: Analyzing trace with hash 338017419, now seen corresponding path program 29 times [2020-10-27 14:25:19,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:19,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900182243] [2020-10-27 14:25:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:19,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:20,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:24,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:24,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 14:25:24,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:24,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:25:24,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:25:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 14:25:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 14:25:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:25,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:25,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:25,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:25,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:25:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:25,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2020-10-27 14:25:25,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900182243] [2020-10-27 14:25:25,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:25,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:25:25,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152676083] [2020-10-27 14:25:25,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:25:25,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:25,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:25:25,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:25,584 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand 33 states. [2020-10-27 14:25:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:25,915 INFO L93 Difference]: Finished difference Result 189 states and 197 transitions. [2020-10-27 14:25:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:25:25,916 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 106 [2020-10-27 14:25:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:25,917 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:25:25,917 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:25:25,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:25:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-10-27 14:25:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 14:25:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-10-27 14:25:25,923 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 106 [2020-10-27 14:25:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:25,924 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-10-27 14:25:25,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:25:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-10-27 14:25:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:25:25,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:25,925 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:25,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:25:25,925 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:25,925 INFO L82 PathProgramCache]: Analyzing trace with hash -222392554, now seen corresponding path program 30 times [2020-10-27 14:25:25,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:25,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506861689] [2020-10-27 14:25:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:26,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:30,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:30,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 14:25:30,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:25:30,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:25:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 14:25:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:25:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:31,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:31,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:31,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:31,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:31,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2020-10-27 14:25:31,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506861689] [2020-10-27 14:25:31,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:31,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:25:31,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339234605] [2020-10-27 14:25:31,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:25:31,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:31,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:25:31,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:31,802 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 34 states. [2020-10-27 14:25:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:32,261 INFO L93 Difference]: Finished difference Result 194 states and 202 transitions. [2020-10-27 14:25:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:25:32,261 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 109 [2020-10-27 14:25:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:32,262 INFO L225 Difference]: With dead ends: 194 [2020-10-27 14:25:32,262 INFO L226 Difference]: Without dead ends: 117 [2020-10-27 14:25:32,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-27 14:25:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-27 14:25:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-27 14:25:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2020-10-27 14:25:32,270 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 109 [2020-10-27 14:25:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:32,270 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2020-10-27 14:25:32,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:25:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2020-10-27 14:25:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 14:25:32,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:32,271 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:32,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:25:32,272 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:32,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1741128747, now seen corresponding path program 31 times [2020-10-27 14:25:32,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:32,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974759574] [2020-10-27 14:25:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:37,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:37,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 14:25:37,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:25:37,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:25:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 14:25:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 14:25:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:38,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:38,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:38,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:38,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:38,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:25:38,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2020-10-27 14:25:38,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974759574] [2020-10-27 14:25:38,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:38,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:25:38,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038874222] [2020-10-27 14:25:38,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:25:38,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:38,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:25:38,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:38,161 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand 35 states. [2020-10-27 14:25:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:38,597 INFO L93 Difference]: Finished difference Result 199 states and 207 transitions. [2020-10-27 14:25:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:25:38,598 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 112 [2020-10-27 14:25:38,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:38,600 INFO L225 Difference]: With dead ends: 199 [2020-10-27 14:25:38,600 INFO L226 Difference]: Without dead ends: 120 [2020-10-27 14:25:38,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:38,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-27 14:25:38,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-10-27 14:25:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:25:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2020-10-27 14:25:38,608 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 112 [2020-10-27 14:25:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:38,608 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2020-10-27 14:25:38,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:25:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2020-10-27 14:25:38,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:25:38,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:38,617 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:38,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:25:38,617 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:38,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1196065526, now seen corresponding path program 32 times [2020-10-27 14:25:38,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:38,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710429552] [2020-10-27 14:25:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:38,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:43,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:43,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 14:25:43,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:25:43,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:25:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 14:25:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:25:43,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:44,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:44,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:44,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:44,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:25:44,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:44,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-27 14:25:44,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710429552] [2020-10-27 14:25:44,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:44,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:25:44,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191564669] [2020-10-27 14:25:44,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:25:44,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:44,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:25:44,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:44,495 INFO L87 Difference]: Start difference. First operand 120 states and 123 transitions. Second operand 36 states. [2020-10-27 14:25:44,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:44,958 INFO L93 Difference]: Finished difference Result 204 states and 212 transitions. [2020-10-27 14:25:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:25:44,958 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 115 [2020-10-27 14:25:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:44,959 INFO L225 Difference]: With dead ends: 204 [2020-10-27 14:25:44,960 INFO L226 Difference]: Without dead ends: 123 [2020-10-27 14:25:44,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:44,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-27 14:25:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-27 14:25:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-27 14:25:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2020-10-27 14:25:44,969 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 115 [2020-10-27 14:25:44,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:44,969 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2020-10-27 14:25:44,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:25:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2020-10-27 14:25:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 14:25:44,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:44,970 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:44,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:25:44,970 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:44,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:44,971 INFO L82 PathProgramCache]: Analyzing trace with hash 2130645963, now seen corresponding path program 33 times [2020-10-27 14:25:44,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:44,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905664690] [2020-10-27 14:25:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:45,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:50,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:50,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 14:25:50,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:50,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:25:50,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 14:25:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 14:25:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:25:50,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:50,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:50,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:50,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2020-10-27 14:25:50,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905664690] [2020-10-27 14:25:50,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:50,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:25:50,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251986520] [2020-10-27 14:25:50,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:25:50,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:50,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:25:50,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:25:50,911 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand 37 states. [2020-10-27 14:25:51,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:51,376 INFO L93 Difference]: Finished difference Result 209 states and 217 transitions. [2020-10-27 14:25:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:25:51,376 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 118 [2020-10-27 14:25:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:51,378 INFO L225 Difference]: With dead ends: 209 [2020-10-27 14:25:51,378 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:25:51,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:25:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:25:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-27 14:25:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 14:25:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2020-10-27 14:25:51,385 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 118 [2020-10-27 14:25:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:51,385 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2020-10-27 14:25:51,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:25:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2020-10-27 14:25:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 14:25:51,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:51,386 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:51,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:25:51,386 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:51,387 INFO L82 PathProgramCache]: Analyzing trace with hash 667807446, now seen corresponding path program 34 times [2020-10-27 14:25:51,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:51,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798130698] [2020-10-27 14:25:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:56,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 14:25:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:25:56,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 14:25:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:25:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:25:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:57,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:57,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:57,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:57,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:57,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:57,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-10-27 14:25:57,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798130698] [2020-10-27 14:25:57,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:57,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:25:57,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594297406] [2020-10-27 14:25:57,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:25:57,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:57,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:25:57,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:25:57,368 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand 38 states. [2020-10-27 14:25:57,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:57,830 INFO L93 Difference]: Finished difference Result 214 states and 222 transitions. [2020-10-27 14:25:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:25:57,831 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 121 [2020-10-27 14:25:57,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:57,832 INFO L225 Difference]: With dead ends: 214 [2020-10-27 14:25:57,832 INFO L226 Difference]: Without dead ends: 129 [2020-10-27 14:25:57,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:25:57,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-27 14:25:57,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-10-27 14:25:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-27 14:25:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-10-27 14:25:57,838 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 121 [2020-10-27 14:25:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:57,838 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-10-27 14:25:57,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:25:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-10-27 14:25:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:25:57,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:57,839 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:57,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:25:57,840 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:57,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1851419499, now seen corresponding path program 35 times [2020-10-27 14:25:57,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:57,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728395779] [2020-10-27 14:25:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:58,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:02,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:02,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 14:26:02,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:26:02,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 14:26:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:26:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 14:26:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:03,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:03,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:03,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:03,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:26:03,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2020-10-27 14:26:03,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728395779] [2020-10-27 14:26:03,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:03,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 14:26:03,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826906993] [2020-10-27 14:26:03,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 14:26:03,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:03,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 14:26:03,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:26:03,878 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 39 states. [2020-10-27 14:26:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:04,290 INFO L93 Difference]: Finished difference Result 219 states and 227 transitions. [2020-10-27 14:26:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:26:04,290 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 124 [2020-10-27 14:26:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:04,292 INFO L225 Difference]: With dead ends: 219 [2020-10-27 14:26:04,292 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 14:26:04,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:26:04,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 14:26:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-10-27 14:26:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 14:26:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2020-10-27 14:26:04,300 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 124 [2020-10-27 14:26:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:04,300 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2020-10-27 14:26:04,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 14:26:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2020-10-27 14:26:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 14:26:04,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:04,301 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:04,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:26:04,301 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:04,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1515901622, now seen corresponding path program 36 times [2020-10-27 14:26:04,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:04,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050850266] [2020-10-27 14:26:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:09,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:09,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 14:26:09,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:26:09,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 14:26:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:26:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:26:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:10,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:10,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:10,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:10,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:10,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:10,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:10,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:10,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:10,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:10,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2020-10-27 14:26:10,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050850266] [2020-10-27 14:26:10,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:10,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:26:10,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000190467] [2020-10-27 14:26:10,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:26:10,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:10,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:26:10,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:10,401 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand 40 states. [2020-10-27 14:26:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:10,856 INFO L93 Difference]: Finished difference Result 224 states and 232 transitions. [2020-10-27 14:26:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:26:10,856 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 127 [2020-10-27 14:26:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:10,857 INFO L225 Difference]: With dead ends: 224 [2020-10-27 14:26:10,857 INFO L226 Difference]: Without dead ends: 135 [2020-10-27 14:26:10,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-27 14:26:10,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-27 14:26:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-27 14:26:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 138 transitions. [2020-10-27 14:26:10,866 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 138 transitions. Word has length 127 [2020-10-27 14:26:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:10,866 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 138 transitions. [2020-10-27 14:26:10,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:26:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 138 transitions. [2020-10-27 14:26:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 14:26:10,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:10,867 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:10,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:26:10,867 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:10,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:10,868 INFO L82 PathProgramCache]: Analyzing trace with hash -723023093, now seen corresponding path program 37 times [2020-10-27 14:26:10,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:10,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109995581] [2020-10-27 14:26:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:10,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:11,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:15,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:15,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 14:26:15,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:15,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:26:15,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-27 14:26:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 14:26:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 14:26:15,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:17,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:17,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:17,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:17,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:26:17,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2109 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2020-10-27 14:26:17,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109995581] [2020-10-27 14:26:17,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:17,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 14:26:17,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179720112] [2020-10-27 14:26:17,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 14:26:17,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:17,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 14:26:17,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:26:17,020 INFO L87 Difference]: Start difference. First operand 135 states and 138 transitions. Second operand 41 states. [2020-10-27 14:26:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:17,538 INFO L93 Difference]: Finished difference Result 229 states and 237 transitions. [2020-10-27 14:26:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:26:17,539 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 130 [2020-10-27 14:26:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:17,540 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:26:17,540 INFO L226 Difference]: Without dead ends: 138 [2020-10-27 14:26:17,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:26:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-27 14:26:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-27 14:26:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 14:26:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2020-10-27 14:26:17,550 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 130 [2020-10-27 14:26:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:17,550 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2020-10-27 14:26:17,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 14:26:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2020-10-27 14:26:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 14:26:17,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:17,551 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:17,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:26:17,551 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash 981675670, now seen corresponding path program 38 times [2020-10-27 14:26:17,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:17,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975890097] [2020-10-27 14:26:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:17,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:22,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:22,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:26:22,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 14:26:22,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 14:26:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:26:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:26:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:23,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:23,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2020-10-27 14:26:23,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975890097] [2020-10-27 14:26:23,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:23,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:26:23,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096665503] [2020-10-27 14:26:23,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:26:23,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:23,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:26:23,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:26:23,765 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand 42 states. [2020-10-27 14:26:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:24,245 INFO L93 Difference]: Finished difference Result 234 states and 242 transitions. [2020-10-27 14:26:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:26:24,245 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 133 [2020-10-27 14:26:24,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:24,247 INFO L225 Difference]: With dead ends: 234 [2020-10-27 14:26:24,247 INFO L226 Difference]: Without dead ends: 141 [2020-10-27 14:26:24,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:26:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-27 14:26:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-10-27 14:26:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-27 14:26:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2020-10-27 14:26:24,254 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 133 [2020-10-27 14:26:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:24,255 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2020-10-27 14:26:24,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:26:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2020-10-27 14:26:24,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 14:26:24,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:24,256 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:24,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:26:24,256 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:24,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1137413461, now seen corresponding path program 39 times [2020-10-27 14:26:24,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:24,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802354791] [2020-10-27 14:26:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:24,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:29,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:29,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 14:26:29,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:29,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:26:29,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:29,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-27 14:26:29,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:26:29,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:26:29,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:30,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:30,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:30,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:30,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:30,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:26:30,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:30,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2340 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2020-10-27 14:26:30,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802354791] [2020-10-27 14:26:30,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:30,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 14:26:30,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974076720] [2020-10-27 14:26:30,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 14:26:30,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:30,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 14:26:30,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:26:30,539 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand 43 states. [2020-10-27 14:26:30,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:30,981 INFO L93 Difference]: Finished difference Result 239 states and 247 transitions. [2020-10-27 14:26:30,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 14:26:30,982 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 136 [2020-10-27 14:26:30,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:30,983 INFO L225 Difference]: With dead ends: 239 [2020-10-27 14:26:30,983 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 14:26:30,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:26:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 14:26:30,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-27 14:26:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-27 14:26:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2020-10-27 14:26:30,991 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 136 [2020-10-27 14:26:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:30,991 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2020-10-27 14:26:30,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 14:26:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2020-10-27 14:26:30,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 14:26:30,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:30,992 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:30,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:26:30,993 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:30,993 INFO L82 PathProgramCache]: Analyzing trace with hash -648478090, now seen corresponding path program 40 times [2020-10-27 14:26:30,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:30,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28907489] [2020-10-27 14:26:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:31,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:36,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:36,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 14:26:36,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 14:26:36,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-27 14:26:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:26:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:26:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:37,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:37,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:37,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:37,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:37,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:37,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2020-10-27 14:26:37,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28907489] [2020-10-27 14:26:37,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:37,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 14:26:37,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793912217] [2020-10-27 14:26:37,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 14:26:37,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:37,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 14:26:37,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:26:37,380 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand 44 states. [2020-10-27 14:26:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:37,891 INFO L93 Difference]: Finished difference Result 244 states and 252 transitions. [2020-10-27 14:26:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:26:37,892 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 139 [2020-10-27 14:26:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:37,893 INFO L225 Difference]: With dead ends: 244 [2020-10-27 14:26:37,893 INFO L226 Difference]: Without dead ends: 147 [2020-10-27 14:26:37,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:26:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-27 14:26:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-10-27 14:26:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-27 14:26:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2020-10-27 14:26:37,901 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 139 [2020-10-27 14:26:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:37,902 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2020-10-27 14:26:37,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 14:26:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2020-10-27 14:26:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 14:26:37,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:37,903 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:37,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-27 14:26:37,903 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2018452043, now seen corresponding path program 41 times [2020-10-27 14:26:37,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:37,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000710860] [2020-10-27 14:26:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:42,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:42,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 14:26:42,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:42,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 14:26:42,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-27 14:26:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 14:26:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 14:26:42,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:44,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:44,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:44,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:44,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2583 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2020-10-27 14:26:44,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000710860] [2020-10-27 14:26:44,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:44,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-27 14:26:44,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89663898] [2020-10-27 14:26:44,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-27 14:26:44,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:44,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-27 14:26:44,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:26:44,324 INFO L87 Difference]: Start difference. First operand 147 states and 150 transitions. Second operand 45 states. [2020-10-27 14:26:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:44,900 INFO L93 Difference]: Finished difference Result 249 states and 257 transitions. [2020-10-27 14:26:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 14:26:44,901 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 142 [2020-10-27 14:26:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:44,903 INFO L225 Difference]: With dead ends: 249 [2020-10-27 14:26:44,903 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 14:26:44,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:26:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 14:26:44,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-27 14:26:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-27 14:26:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2020-10-27 14:26:44,910 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 142 [2020-10-27 14:26:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:44,911 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2020-10-27 14:26:44,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-27 14:26:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2020-10-27 14:26:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 14:26:44,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:44,912 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:44,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-27 14:26:44,912 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:44,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash 493768278, now seen corresponding path program 42 times [2020-10-27 14:26:44,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:44,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285766345] [2020-10-27 14:26:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking...