/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:21:14,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:21:14,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:21:14,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:21:14,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:21:14,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:21:14,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:21:14,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:21:14,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:21:14,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:21:14,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:21:14,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:21:14,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:21:14,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:21:14,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:21:14,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:21:14,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:21:14,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:21:14,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:21:14,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:21:14,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:21:14,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:21:14,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:21:14,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:21:14,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:21:14,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:21:14,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:21:14,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:21:14,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:21:14,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:21:14,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:21:14,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:21:14,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:21:14,286 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 00:21:14,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:21:14,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:21:14,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:21:14,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:21:14,342 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:21:14,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:21:14,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:21:14,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:21:14,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:21:14,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:21:14,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:21:14,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:21:14,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:21:14,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:21:14,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:21:14,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:21:14,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:21:14,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:21:14,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:21:14,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:21:14,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:21:14,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:21:14,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:21:14,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:21:14,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:21:14,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:21:14,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:21:14,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:21:14,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:21:14,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:21:14,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:21:14,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:21:14,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:21:14,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:21:14,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:21:14,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59.c [2020-10-27 00:21:14,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac297f258/44c244b0259e418db99a64986ec0ef74/FLAG2d05ebc24 [2020-10-27 00:21:15,853 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:21:15,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label59.c [2020-10-27 00:21:15,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac297f258/44c244b0259e418db99a64986ec0ef74/FLAG2d05ebc24 [2020-10-27 00:21:16,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac297f258/44c244b0259e418db99a64986ec0ef74 [2020-10-27 00:21:16,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:21:16,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:21:16,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:21:16,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:21:16,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:21:16,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:21:16" (1/1) ... [2020-10-27 00:21:16,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323deba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:16, skipping insertion in model container [2020-10-27 00:21:16,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:21:16" (1/1) ... [2020-10-27 00:21:16,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:21:16,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:21:17,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:21:17,656 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:21:18,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:21:18,088 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:21:18,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18 WrapperNode [2020-10-27 00:21:18,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:21:18,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:21:18,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:21:18,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:21:18,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18" (1/1) ... [2020-10-27 00:21:18,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18" (1/1) ... [2020-10-27 00:21:18,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18" (1/1) ... [2020-10-27 00:21:18,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18" (1/1) ... [2020-10-27 00:21:18,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18" (1/1) ... [2020-10-27 00:21:18,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18" (1/1) ... [2020-10-27 00:21:18,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18" (1/1) ... [2020-10-27 00:21:18,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:21:18,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:21:18,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:21:18,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:21:18,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18" (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 00:21:18,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:21:18,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:21:18,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:21:18,458 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:21:18,458 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:21:18,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:21:18,458 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:21:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:21:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:21:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:21:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:21:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:21:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:21:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:21:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:21:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:21:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:21:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:21:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:21:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:21:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:21:27,545 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:21:27,547 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:21:27,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:21:27 BoogieIcfgContainer [2020-10-27 00:21:27,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:21:27,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:21:27,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:21:27,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:21:27,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:21:16" (1/3) ... [2020-10-27 00:21:27,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4576e94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:21:27, skipping insertion in model container [2020-10-27 00:21:27,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:18" (2/3) ... [2020-10-27 00:21:27,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4576e94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:21:27, skipping insertion in model container [2020-10-27 00:21:27,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:21:27" (3/3) ... [2020-10-27 00:21:27,564 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label59.c [2020-10-27 00:21:27,580 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:21:27,586 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:21:27,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:21:27,675 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:21:27,676 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:21:27,676 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:21:27,676 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:21:27,676 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:21:27,676 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:21:27,676 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:21:27,676 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:21:27,723 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 00:21:27,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 00:21:27,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:21:27,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:21:27,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:21:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:21:27,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1326414411, now seen corresponding path program 1 times [2020-10-27 00:21:27,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:21:27,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446176587] [2020-10-27 00:21:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:21:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:28,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:28,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 00:21:28,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:28,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-27 00:21:28,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:21:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:21:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 00:21:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:21:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:21:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:28,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:28,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:21:28,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:21:28,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:21:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:21:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:21:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:21:28,789 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 00:21:28,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446176587] [2020-10-27 00:21:28,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:21:28,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:21:28,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716801707] [2020-10-27 00:21:28,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:21:28,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:21:28,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:21:28,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:21:28,818 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-27 00:21:42,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:21:42,170 INFO L93 Difference]: Finished difference Result 1734 states and 3143 transitions. [2020-10-27 00:21:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:21:42,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-27 00:21:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:21:42,210 INFO L225 Difference]: With dead ends: 1734 [2020-10-27 00:21:42,210 INFO L226 Difference]: Without dead ends: 1048 [2020-10-27 00:21:42,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:21:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-10-27 00:21:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1029. [2020-10-27 00:21:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-10-27 00:21:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1764 transitions. [2020-10-27 00:21:42,400 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1764 transitions. Word has length 39 [2020-10-27 00:21:42,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:21:42,401 INFO L481 AbstractCegarLoop]: Abstraction has 1029 states and 1764 transitions. [2020-10-27 00:21:42,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:21:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1764 transitions. [2020-10-27 00:21:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 00:21:42,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:21:42,410 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:21:42,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:21:42,410 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:21:42,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:21:42,412 INFO L82 PathProgramCache]: Analyzing trace with hash -509543706, now seen corresponding path program 1 times [2020-10-27 00:21:42,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:21:42,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395721143] [2020-10-27 00:21:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:21:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:43,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:43,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 00:21:43,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:21:43,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-27 00:21:43,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:21:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:21:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:21:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:21:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:21:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:43,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:43,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:21:43,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:43,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:21:43,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:21:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:21:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:21:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:21:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:21:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:44,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:44,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:44,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:21:44,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:44,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 00:21:44,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:44,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:21:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:21:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:21:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:21:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:21:44,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395721143] [2020-10-27 00:21:44,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:21:44,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:21:44,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596148931] [2020-10-27 00:21:44,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:21:44,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:21:44,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:21:44,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:21:44,295 INFO L87 Difference]: Start difference. First operand 1029 states and 1764 transitions. Second operand 7 states. [2020-10-27 00:22:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:00,960 INFO L93 Difference]: Finished difference Result 3007 states and 5211 transitions. [2020-10-27 00:22:00,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:22:00,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-27 00:22:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:00,978 INFO L225 Difference]: With dead ends: 3007 [2020-10-27 00:22:00,978 INFO L226 Difference]: Without dead ends: 1984 [2020-10-27 00:22:00,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:22:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-10-27 00:22:01,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1936. [2020-10-27 00:22:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2020-10-27 00:22:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 2920 transitions. [2020-10-27 00:22:01,061 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 2920 transitions. Word has length 108 [2020-10-27 00:22:01,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:01,063 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 2920 transitions. [2020-10-27 00:22:01,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:22:01,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 2920 transitions. [2020-10-27 00:22:01,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 00:22:01,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:01,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:22:01,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:22:01,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:01,078 INFO L82 PathProgramCache]: Analyzing trace with hash 836137738, now seen corresponding path program 1 times [2020-10-27 00:22:01,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:01,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5886302] [2020-10-27 00:22:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:01,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:01,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 00:22:01,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:22:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-27 00:22:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:22:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:22:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:22:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:02,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:02,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:02,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:02,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:22:02,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:02,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:22:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:02,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:02,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:02,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:02,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:22:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-27 00:22:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:22:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:22:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:22:02,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5886302] [2020-10-27 00:22:02,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:22:02,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:22:02,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185443843] [2020-10-27 00:22:02,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:22:02,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:02,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:22:02,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:22:02,485 INFO L87 Difference]: Start difference. First operand 1936 states and 2920 transitions. Second operand 7 states. [2020-10-27 00:22:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:16,829 INFO L93 Difference]: Finished difference Result 4345 states and 6929 transitions. [2020-10-27 00:22:16,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:22:16,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-27 00:22:16,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:16,846 INFO L225 Difference]: With dead ends: 4345 [2020-10-27 00:22:16,846 INFO L226 Difference]: Without dead ends: 2415 [2020-10-27 00:22:16,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:22:16,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2020-10-27 00:22:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 1924. [2020-10-27 00:22:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1924 states. [2020-10-27 00:22:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2687 transitions. [2020-10-27 00:22:16,933 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2687 transitions. Word has length 110 [2020-10-27 00:22:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:16,935 INFO L481 AbstractCegarLoop]: Abstraction has 1924 states and 2687 transitions. [2020-10-27 00:22:16,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:22:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2687 transitions. [2020-10-27 00:22:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 00:22:16,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:16,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:22:16,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:22:16,937 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:16,937 INFO L82 PathProgramCache]: Analyzing trace with hash 730395903, now seen corresponding path program 1 times [2020-10-27 00:22:16,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:16,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188598430] [2020-10-27 00:22:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:17,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:17,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:17,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:17,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 00:22:17,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:22:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-27 00:22:17,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 00:22:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:22:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 00:22:17,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 00:22:17,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:17,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:17,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:17,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:17,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:22:17,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:22:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:18,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:18,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:22:18,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 00:22:18,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:22:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:22:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:22:18,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:22:18,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188598430] [2020-10-27 00:22:18,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:22:18,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:22:18,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964191878] [2020-10-27 00:22:18,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:22:18,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:18,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:22:18,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:22:18,247 INFO L87 Difference]: Start difference. First operand 1924 states and 2687 transitions. Second operand 8 states. [2020-10-27 00:22:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:38,145 INFO L93 Difference]: Finished difference Result 5283 states and 7264 transitions. [2020-10-27 00:22:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:22:38,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-27 00:22:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:38,166 INFO L225 Difference]: With dead ends: 5283 [2020-10-27 00:22:38,166 INFO L226 Difference]: Without dead ends: 3320 [2020-10-27 00:22:38,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:22:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2020-10-27 00:22:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 3274. [2020-10-27 00:22:38,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3274 states. [2020-10-27 00:22:38,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 4345 transitions. [2020-10-27 00:22:38,277 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 4345 transitions. Word has length 113 [2020-10-27 00:22:38,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:38,277 INFO L481 AbstractCegarLoop]: Abstraction has 3274 states and 4345 transitions. [2020-10-27 00:22:38,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:22:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 4345 transitions. [2020-10-27 00:22:38,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 00:22:38,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:38,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:22:38,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:22:38,280 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:38,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:38,280 INFO L82 PathProgramCache]: Analyzing trace with hash -208975958, now seen corresponding path program 1 times [2020-10-27 00:22:38,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:38,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076833571] [2020-10-27 00:22:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:38,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:38,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:38,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 00:22:38,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 00:22:38,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:22:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 00:22:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:38,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:38,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:38,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:38,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:22:38,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:22:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:22:38,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:22:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:38,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:38,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:38,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:22:38,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 00:22:38,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:22:38,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:22:38,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076833571] [2020-10-27 00:22:38,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:22:38,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:22:38,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913332162] [2020-10-27 00:22:38,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:22:38,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:38,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:22:38,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:22:38,964 INFO L87 Difference]: Start difference. First operand 3274 states and 4345 transitions. Second operand 5 states. [2020-10-27 00:22:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:54,710 INFO L93 Difference]: Finished difference Result 8810 states and 12081 transitions. [2020-10-27 00:22:54,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:22:54,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-27 00:22:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:54,735 INFO L225 Difference]: With dead ends: 8810 [2020-10-27 00:22:54,735 INFO L226 Difference]: Without dead ends: 4642 [2020-10-27 00:22:54,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:22:54,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2020-10-27 00:22:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 4629. [2020-10-27 00:22:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4629 states. [2020-10-27 00:22:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 5846 transitions. [2020-10-27 00:22:54,873 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 5846 transitions. Word has length 126 [2020-10-27 00:22:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:54,875 INFO L481 AbstractCegarLoop]: Abstraction has 4629 states and 5846 transitions. [2020-10-27 00:22:54,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:22:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 5846 transitions. [2020-10-27 00:22:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 00:22:54,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:54,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:22:54,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:22:54,881 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:54,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:54,881 INFO L82 PathProgramCache]: Analyzing trace with hash -106217898, now seen corresponding path program 1 times [2020-10-27 00:22:54,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:54,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221987034] [2020-10-27 00:22:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:54,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:56,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:56,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 00:22:56,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:22:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-27 00:22:56,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:22:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:22:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:56,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:56,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:56,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:56,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:56,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:22:56,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:22:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:22:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:56,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:56,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:22:56,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:56,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:22:56,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:56,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:56,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:22:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:56,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:22:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:56,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:56,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:22:56,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:56,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 00:22:56,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:22:56,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:22:56,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:22:56,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221987034] [2020-10-27 00:22:56,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:22:56,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:22:56,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603014644] [2020-10-27 00:22:56,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:22:56,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:56,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:22:56,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:22:56,885 INFO L87 Difference]: Start difference. First operand 4629 states and 5846 transitions. Second operand 8 states. [2020-10-27 00:23:10,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:23:10,909 INFO L93 Difference]: Finished difference Result 11540 states and 15379 transitions. [2020-10-27 00:23:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:23:10,911 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-27 00:23:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:23:10,948 INFO L225 Difference]: With dead ends: 11540 [2020-10-27 00:23:10,948 INFO L226 Difference]: Without dead ends: 7350 [2020-10-27 00:23:10,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:23:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2020-10-27 00:23:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7333. [2020-10-27 00:23:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7333 states. [2020-10-27 00:23:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7333 states to 7333 states and 9360 transitions. [2020-10-27 00:23:11,182 INFO L78 Accepts]: Start accepts. Automaton has 7333 states and 9360 transitions. Word has length 196 [2020-10-27 00:23:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:23:11,183 INFO L481 AbstractCegarLoop]: Abstraction has 7333 states and 9360 transitions. [2020-10-27 00:23:11,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:23:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7333 states and 9360 transitions. [2020-10-27 00:23:11,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 00:23:11,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:23:11,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:23:11,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:23:11,187 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:23:11,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:23:11,188 INFO L82 PathProgramCache]: Analyzing trace with hash -991138333, now seen corresponding path program 1 times [2020-10-27 00:23:11,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:23:11,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620229732] [2020-10-27 00:23:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:23:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:11,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:11,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:15,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:15,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 00:23:15,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:23:15,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3889 [2020-10-27 00:23:15,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 00:23:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:23:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 00:23:15,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:15,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:23:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:15,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:15,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:23:15,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:23:15,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:23:15,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:23:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:15,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:15,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:23:15,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:15,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 00:23:15,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:23:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:23:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:23:15,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:23:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:15,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:15,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:15,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:23:15,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 00:23:15,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:23:15,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 00:23:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:23:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-27 00:23:16,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620229732] [2020-10-27 00:23:16,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:23:16,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:23:16,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139752334] [2020-10-27 00:23:16,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:23:16,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:23:16,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:23:16,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:23:16,041 INFO L87 Difference]: Start difference. First operand 7333 states and 9360 transitions. Second operand 9 states. [2020-10-27 00:23:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:23:44,833 INFO L93 Difference]: Finished difference Result 24489 states and 33664 transitions. [2020-10-27 00:23:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 00:23:44,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 209 [2020-10-27 00:23:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:23:44,923 INFO L225 Difference]: With dead ends: 24489 [2020-10-27 00:23:44,923 INFO L226 Difference]: Without dead ends: 16228 [2020-10-27 00:23:44,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-10-27 00:23:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16228 states. [2020-10-27 00:23:45,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16228 to 16072. [2020-10-27 00:23:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16072 states. [2020-10-27 00:23:45,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16072 states to 16072 states and 20664 transitions. [2020-10-27 00:23:45,438 INFO L78 Accepts]: Start accepts. Automaton has 16072 states and 20664 transitions. Word has length 209 [2020-10-27 00:23:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:23:45,439 INFO L481 AbstractCegarLoop]: Abstraction has 16072 states and 20664 transitions. [2020-10-27 00:23:45,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:23:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 16072 states and 20664 transitions. [2020-10-27 00:23:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 00:23:45,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:23:45,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:23:45,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:23:45,444 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:23:45,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:23:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash 123639133, now seen corresponding path program 1 times [2020-10-27 00:23:45,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:23:45,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848063651] [2020-10-27 00:23:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:23:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:45,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:46,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:46,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:23:46,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:23:46,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-27 00:23:46,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:23:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:23:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:23:46,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:46,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:23:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:46,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:46,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:46,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:23:46,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:46,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:23:46,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:46,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:46,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:23:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:46,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:46,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:23:46,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:46,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:23:46,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:46,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:46,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:46,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:23:46,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:23:46,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:23:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:47,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:47,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:47,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 00:23:47,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:23:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-27 00:23:47,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:23:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 00:23:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 139 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:23:47,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848063651] [2020-10-27 00:23:47,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:23:47,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:23:47,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77923116] [2020-10-27 00:23:47,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:23:47,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:23:47,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:23:47,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:23:47,542 INFO L87 Difference]: Start difference. First operand 16072 states and 20664 transitions. Second operand 6 states. [2020-10-27 00:24:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:00,841 INFO L93 Difference]: Finished difference Result 32589 states and 42481 transitions. [2020-10-27 00:24:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 00:24:00,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2020-10-27 00:24:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:00,917 INFO L225 Difference]: With dead ends: 32589 [2020-10-27 00:24:00,917 INFO L226 Difference]: Without dead ends: 16956 [2020-10-27 00:24:00,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:24:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2020-10-27 00:24:01,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 16943. [2020-10-27 00:24:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16943 states. [2020-10-27 00:24:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16943 states to 16943 states and 21963 transitions. [2020-10-27 00:24:01,478 INFO L78 Accepts]: Start accepts. Automaton has 16943 states and 21963 transitions. Word has length 212 [2020-10-27 00:24:01,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:01,478 INFO L481 AbstractCegarLoop]: Abstraction has 16943 states and 21963 transitions. [2020-10-27 00:24:01,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:24:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 16943 states and 21963 transitions. [2020-10-27 00:24:01,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-27 00:24:01,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:01,485 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:24:01,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:24:01,486 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:01,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1425780664, now seen corresponding path program 1 times [2020-10-27 00:24:01,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:01,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876738044] [2020-10-27 00:24:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:05,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:05,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 00:24:05,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:24:05,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3697 [2020-10-27 00:24:05,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 00:24:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:24:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 290 [2020-10-27 00:24:05,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:05,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:05,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:05,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:24:05,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:24:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:05,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:05,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:05,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:24:05,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:05,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 00:24:05,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:05,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:24:05,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:05,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:24:05,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:24:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:05,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:05,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:05,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 00:24:05,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:05,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:24:05,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:05,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 00:24:05,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:05,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 00:24:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:06,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:06,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:24:06,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:24:06,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:24:06,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 9 proven. 218 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-27 00:24:06,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876738044] [2020-10-27 00:24:06,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:24:06,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:24:06,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236834733] [2020-10-27 00:24:06,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:24:06,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:06,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:24:06,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:24:06,352 INFO L87 Difference]: Start difference. First operand 16943 states and 21963 transitions. Second operand 9 states. [2020-10-27 00:24:06,530 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:24:31,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:31,370 INFO L93 Difference]: Finished difference Result 51839 states and 71188 transitions. [2020-10-27 00:24:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 00:24:31,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 283 [2020-10-27 00:24:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:31,535 INFO L225 Difference]: With dead ends: 51839 [2020-10-27 00:24:31,535 INFO L226 Difference]: Without dead ends: 37596 [2020-10-27 00:24:31,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-27 00:24:31,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37596 states. [2020-10-27 00:24:32,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37596 to 34288. [2020-10-27 00:24:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34288 states. [2020-10-27 00:24:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34288 states to 34288 states and 44105 transitions. [2020-10-27 00:24:32,596 INFO L78 Accepts]: Start accepts. Automaton has 34288 states and 44105 transitions. Word has length 283 [2020-10-27 00:24:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:32,597 INFO L481 AbstractCegarLoop]: Abstraction has 34288 states and 44105 transitions. [2020-10-27 00:24:32,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:24:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 34288 states and 44105 transitions. [2020-10-27 00:24:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-27 00:24:32,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:32,604 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:24:32,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:24:32,605 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:32,605 INFO L82 PathProgramCache]: Analyzing trace with hash -57498889, now seen corresponding path program 1 times [2020-10-27 00:24:32,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:32,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545999833] [2020-10-27 00:24:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:33,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:33,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:34,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:37,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:37,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-27 00:24:37,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:24:37,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 00:24:37,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:24:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 00:24:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:37,894 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:24:37,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:37,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:37,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:37,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:37,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:24:37,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:24:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:37,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:38,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:38,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:24:38,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:38,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:24:38,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:24:38,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:38,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:24:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:38,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:38,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 00:24:38,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-27 00:24:38,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 00:24:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 00:24:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:38,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:38,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:38,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:24:38,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:24:38,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:24:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 181 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 00:24:38,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545999833] [2020-10-27 00:24:38,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:24:38,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:24:38,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377627370] [2020-10-27 00:24:38,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:24:38,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:38,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:24:38,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:24:38,842 INFO L87 Difference]: Start difference. First operand 34288 states and 44105 transitions. Second operand 7 states. [2020-10-27 00:24:39,915 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-27 00:24:46,135 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 00:24:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:57,095 INFO L93 Difference]: Finished difference Result 73653 states and 94973 transitions. [2020-10-27 00:24:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:24:57,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-27 00:24:57,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:57,226 INFO L225 Difference]: With dead ends: 73653 [2020-10-27 00:24:57,227 INFO L226 Difference]: Without dead ends: 39804 [2020-10-27 00:24:57,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:24:57,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39804 states. [2020-10-27 00:24:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39804 to 39662. [2020-10-27 00:24:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39662 states. [2020-10-27 00:24:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39662 states to 39662 states and 50548 transitions. [2020-10-27 00:24:58,585 INFO L78 Accepts]: Start accepts. Automaton has 39662 states and 50548 transitions. Word has length 306 [2020-10-27 00:24:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:58,586 INFO L481 AbstractCegarLoop]: Abstraction has 39662 states and 50548 transitions. [2020-10-27 00:24:58,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:24:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 39662 states and 50548 transitions. [2020-10-27 00:24:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-27 00:24:58,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:58,597 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:24:58,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:24:58,597 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:58,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:58,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1482180445, now seen corresponding path program 1 times [2020-10-27 00:24:58,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:58,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995540662] [2020-10-27 00:24:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:03,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:03,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-27 00:25:03,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:25:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 00:25:03,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 00:25:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:25:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-27 00:25:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:04,067 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:25:04,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:25:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:04,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:04,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:25:04,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:25:04,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:25:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:25:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:25:04,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:04,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:25:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:04,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:04,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:25:04,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 00:25:04,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:25:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:25:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:25:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:04,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:25:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:04,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:04,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:04,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 00:25:04,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:04,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 00:25:04,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:25:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:25:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-27 00:25:04,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:25:05,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:25:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:25:05,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:25:05,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:25:05,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:25:05,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:25:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:25:05,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:25:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:25:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 00:25:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:25:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:25:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 98 proven. 227 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 00:25:05,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995540662] [2020-10-27 00:25:05,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:25:05,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:25:05,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985780648] [2020-10-27 00:25:05,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:25:05,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:25:05,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:25:05,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:25:05,480 INFO L87 Difference]: Start difference. First operand 39662 states and 50548 transitions. Second operand 10 states. [2020-10-27 00:25:05,770 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70