/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-cav19/array_init_var_plus_ind.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:35:37,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:35:37,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:35:37,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:35:37,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:35:37,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:35:37,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:35:37,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:35:37,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:35:37,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:35:37,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:35:37,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:35:37,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:35:37,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:35:37,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:35:37,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:35:37,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:35:37,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:35:37,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:35:37,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:35:37,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:35:37,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:35:37,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:35:37,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:35:37,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:35:37,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:35:37,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:35:37,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:35:37,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:35:37,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:35:37,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:35:37,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:35:37,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:35:37,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:35:37,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:35:37,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:35:37,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:35:37,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:35:37,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:35:37,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:35:37,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:35:37,353 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 [2020-10-28 08:35:37,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:35:37,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:35:37,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:35:37,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:35:37,417 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:35:37,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:35:37,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:35:37,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:35:37,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:35:37,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:35:37,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:35:37,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:35:37,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:35:37,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:35:37,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:35:37,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:35:37,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:35:37,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:35:37,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:35:37,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:35:37,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:35:37,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:35:37,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:35:37,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:35:37,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:35:37,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:35:37,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:35:37,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:35:37,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:35:37,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:35:37,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:35:37,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:35:37,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:35:37,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:35:37,921 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:35:37,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_var_plus_ind.c [2020-10-28 08:35:38,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9747d2d9b/b11b5e979d1b499196f022b88509d15f/FLAG4a22531bb [2020-10-28 08:35:38,651 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:35:38,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_init_var_plus_ind.c [2020-10-28 08:35:38,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9747d2d9b/b11b5e979d1b499196f022b88509d15f/FLAG4a22531bb [2020-10-28 08:35:38,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9747d2d9b/b11b5e979d1b499196f022b88509d15f [2020-10-28 08:35:38,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:35:39,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:35:39,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:35:39,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:35:39,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:35:39,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:39,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7f0b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39, skipping insertion in model container [2020-10-28 08:35:39,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:38" (1/1) ... [2020-10-28 08:35:39,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:35:39,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:35:39,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:35:39,236 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:35:39,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:35:39,291 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:35:39,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39 WrapperNode [2020-10-28 08:35:39,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:35:39,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:35:39,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:35:39,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:35:39,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (1/1) ... [2020-10-28 08:35:39,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:35:39,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:35:39,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:35:39,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:35:39,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (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 [2020-10-28 08:35:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:35:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:35:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:35:39,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 08:35:39,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 08:35:39,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:35:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:35:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:35:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:35:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:35:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 08:35:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 08:35:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:35:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:35:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:35:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:35:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:35:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:35:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:35:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:35:40,002 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:35:40,002 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 08:35:40,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:40 BoogieIcfgContainer [2020-10-28 08:35:40,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:35:40,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:35:40,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:35:40,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:35:40,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:35:38" (1/3) ... [2020-10-28 08:35:40,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71952940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:40, skipping insertion in model container [2020-10-28 08:35:40,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:39" (2/3) ... [2020-10-28 08:35:40,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71952940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:40, skipping insertion in model container [2020-10-28 08:35:40,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:40" (3/3) ... [2020-10-28 08:35:40,048 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind.c [2020-10-28 08:35:40,061 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:35:40,066 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:35:40,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:35:40,142 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:35:40,142 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:35:40,142 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:35:40,143 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:35:40,143 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:35:40,143 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:35:40,143 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:35:40,143 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:35:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-28 08:35:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 08:35:40,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:40,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:40,176 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:40,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:40,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1582220556, now seen corresponding path program 1 times [2020-10-28 08:35:40,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:40,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135024000] [2020-10-28 08:35:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:40,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:40,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:35:40,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-28 08:35:40,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:40,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:35:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:35:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:35:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 08:35:41,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:41,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:35:41,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:35:41,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:41,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135024000] [2020-10-28 08:35:41,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:35:41,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:35:41,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163142460] [2020-10-28 08:35:41,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:35:41,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:41,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:35:41,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:35:41,278 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-10-28 08:35:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:41,527 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-10-28 08:35:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:35:41,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-28 08:35:41,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:41,538 INFO L225 Difference]: With dead ends: 57 [2020-10-28 08:35:41,539 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 08:35:41,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:35:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 08:35:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2020-10-28 08:35:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-28 08:35:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-28 08:35:41,594 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2020-10-28 08:35:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:41,595 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-28 08:35:41,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:35:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-28 08:35:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 08:35:41,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:41,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:41,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:35:41,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:41,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:41,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2112687446, now seen corresponding path program 1 times [2020-10-28 08:35:41,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:41,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124605095] [2020-10-28 08:35:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 08:35:41,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 08:35:41,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:35:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 08:35:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:41,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:41,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:41,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:41,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:35:41,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:41,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:41,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124605095] [2020-10-28 08:35:41,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:35:41,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 08:35:41,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908037618] [2020-10-28 08:35:41,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:35:41,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:41,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:35:41,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:35:41,816 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2020-10-28 08:35:41,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:41,901 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-10-28 08:35:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:35:41,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-28 08:35:41,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:41,903 INFO L225 Difference]: With dead ends: 37 [2020-10-28 08:35:41,903 INFO L226 Difference]: Without dead ends: 24 [2020-10-28 08:35:41,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:35:41,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-28 08:35:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-28 08:35:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 08:35:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-28 08:35:41,912 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-28 08:35:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:41,913 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-28 08:35:41,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:35:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-28 08:35:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 08:35:41,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:41,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:41,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:35:41,914 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:41,915 INFO L82 PathProgramCache]: Analyzing trace with hash 996586641, now seen corresponding path program 1 times [2020-10-28 08:35:41,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:41,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593172734] [2020-10-28 08:35:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 08:35:42,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-28 08:35:42,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:35:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:35:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 08:35:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:42,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:42,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 08:35:42,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:35:42,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:42,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593172734] [2020-10-28 08:35:42,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:42,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:35:42,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515852390] [2020-10-28 08:35:42,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:35:42,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:42,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:35:42,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:35:42,333 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-10-28 08:35:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:42,563 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-28 08:35:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:35:42,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-28 08:35:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:42,565 INFO L225 Difference]: With dead ends: 44 [2020-10-28 08:35:42,565 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 08:35:42,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:35:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 08:35:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-10-28 08:35:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-28 08:35:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-28 08:35:42,575 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2020-10-28 08:35:42,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:42,576 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-28 08:35:42,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:35:42,576 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-28 08:35:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 08:35:42,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:42,577 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:42,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:35:42,578 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:42,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1207497669, now seen corresponding path program 1 times [2020-10-28 08:35:42,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:42,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102257513] [2020-10-28 08:35:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:35:42,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:42,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 08:35:42,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:35:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:35:42,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:42,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:42,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:35:42,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:42,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:42,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:42,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102257513] [2020-10-28 08:35:42,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:42,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:35:42,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204525890] [2020-10-28 08:35:42,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:35:42,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:35:42,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:35:42,776 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-10-28 08:35:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:42,869 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-28 08:35:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:35:42,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-28 08:35:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:42,871 INFO L225 Difference]: With dead ends: 40 [2020-10-28 08:35:42,871 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 08:35:42,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:35:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 08:35:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-28 08:35:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 08:35:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-28 08:35:42,879 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18 [2020-10-28 08:35:42,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:42,879 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-28 08:35:42,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:35:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-28 08:35:42,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 08:35:42,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:42,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:42,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:35:42,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:42,882 INFO L82 PathProgramCache]: Analyzing trace with hash 533781228, now seen corresponding path program 2 times [2020-10-28 08:35:42,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:42,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678070716] [2020-10-28 08:35:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:43,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:43,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:35:43,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-28 08:35:43,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:43,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:35:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:35:43,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:35:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:43,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:43,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:43,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:35:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:43,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:35:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:43,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678070716] [2020-10-28 08:35:43,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:43,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:35:43,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982095769] [2020-10-28 08:35:43,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:35:43,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:43,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:35:43,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:35:43,798 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2020-10-28 08:35:44,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:44,040 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-28 08:35:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:35:44,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-28 08:35:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:44,042 INFO L225 Difference]: With dead ends: 47 [2020-10-28 08:35:44,042 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 08:35:44,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:35:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 08:35:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-10-28 08:35:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 08:35:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-28 08:35:44,050 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-10-28 08:35:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:44,050 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-28 08:35:44,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:35:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-28 08:35:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 08:35:44,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:44,051 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:44,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:35:44,052 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:44,052 INFO L82 PathProgramCache]: Analyzing trace with hash -254568246, now seen corresponding path program 2 times [2020-10-28 08:35:44,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:44,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682389334] [2020-10-28 08:35:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:44,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 08:35:44,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 08:35:44,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:44,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:35:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:44,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:35:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:44,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:44,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:44,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:44,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:35:44,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:44,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:44,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:44,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:44,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:44,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:44,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682389334] [2020-10-28 08:35:44,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:44,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:35:44,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412391018] [2020-10-28 08:35:44,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:35:44,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:44,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:35:44,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:35:44,453 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 10 states. [2020-10-28 08:35:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:44,788 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-28 08:35:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:35:44,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-28 08:35:44,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:44,795 INFO L225 Difference]: With dead ends: 45 [2020-10-28 08:35:44,797 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 08:35:44,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:35:44,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 08:35:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-28 08:35:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 08:35:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-28 08:35:44,809 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 21 [2020-10-28 08:35:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:44,812 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-28 08:35:44,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:35:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-28 08:35:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 08:35:44,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:44,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:44,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:35:44,814 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:44,815 INFO L82 PathProgramCache]: Analyzing trace with hash -57257295, now seen corresponding path program 3 times [2020-10-28 08:35:44,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:44,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605755055] [2020-10-28 08:35:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:44,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:45,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:45,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 08:35:45,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:45,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-10-28 08:35:45,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:45,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:35:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:35:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 08:35:45,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:45,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:45,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:45,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:45,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:35:45,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:45,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:45,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:45,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:45,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:35:45,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:45,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605755055] [2020-10-28 08:35:45,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:45,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:35:45,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496296977] [2020-10-28 08:35:45,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:35:45,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:45,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:35:45,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:35:45,727 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 8 states. [2020-10-28 08:35:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:45,994 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-10-28 08:35:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:35:45,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-28 08:35:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:45,999 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:35:45,999 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 08:35:46,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:35:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 08:35:46,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-28 08:35:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 08:35:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-28 08:35:46,021 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 23 [2020-10-28 08:35:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:46,022 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-28 08:35:46,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:35:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-28 08:35:46,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 08:35:46,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:46,024 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:46,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:35:46,025 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:46,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:46,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1396893275, now seen corresponding path program 3 times [2020-10-28 08:35:46,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:46,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484118002] [2020-10-28 08:35:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:46,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:46,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:35:46,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-28 08:35:46,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:46,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:35:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 08:35:46,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:46,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:46,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:46,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:46,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:46,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:35:46,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:46,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:46,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:46,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484118002] [2020-10-28 08:35:46,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:46,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:35:46,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962494989] [2020-10-28 08:35:46,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:35:46,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:46,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:35:46,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:35:46,655 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 11 states. [2020-10-28 08:35:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:47,221 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-10-28 08:35:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:35:47,221 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-28 08:35:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:47,223 INFO L225 Difference]: With dead ends: 61 [2020-10-28 08:35:47,223 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 08:35:47,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:35:47,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 08:35:47,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2020-10-28 08:35:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:35:47,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-28 08:35:47,244 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 24 [2020-10-28 08:35:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:47,245 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-28 08:35:47,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:35:47,245 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-28 08:35:47,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 08:35:47,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:47,248 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:47,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:35:47,248 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:47,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1680017612, now seen corresponding path program 4 times [2020-10-28 08:35:47,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:47,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358528616] [2020-10-28 08:35:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:47,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:48,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:35:48,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:35:48,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-28 08:35:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:48,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:35:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:35:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:35:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:48,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:48,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:48,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:48,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:35:48,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:48,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:48,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:48,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:35:48,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:48,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358528616] [2020-10-28 08:35:48,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:48,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:35:48,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928163217] [2020-10-28 08:35:48,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:35:48,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:48,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:35:48,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:35:48,947 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 9 states. [2020-10-28 08:35:49,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:49,238 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-28 08:35:49,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:35:49,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-28 08:35:49,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:49,240 INFO L225 Difference]: With dead ends: 71 [2020-10-28 08:35:49,240 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 08:35:49,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:35:49,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 08:35:49,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 41. [2020-10-28 08:35:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 08:35:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 08:35:49,251 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 26 [2020-10-28 08:35:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:49,251 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 08:35:49,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:35:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 08:35:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 08:35:49,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:49,252 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:49,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:35:49,253 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:49,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:49,253 INFO L82 PathProgramCache]: Analyzing trace with hash 919021290, now seen corresponding path program 4 times [2020-10-28 08:35:49,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:49,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032977436] [2020-10-28 08:35:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:49,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:49,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:49,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 08:35:49,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:49,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-28 08:35:49,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:49,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:49,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:35:49,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:49,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:35:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:50,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:50,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:50,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:50,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:35:50,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:50,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:50,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:50,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032977436] [2020-10-28 08:35:50,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:50,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:35:50,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063852970] [2020-10-28 08:35:50,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:35:50,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:50,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:35:50,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:35:50,321 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 13 states. [2020-10-28 08:35:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:50,986 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-10-28 08:35:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:35:50,987 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-28 08:35:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:50,988 INFO L225 Difference]: With dead ends: 67 [2020-10-28 08:35:50,988 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 08:35:50,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:35:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 08:35:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2020-10-28 08:35:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 08:35:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-10-28 08:35:50,998 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 27 [2020-10-28 08:35:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:50,999 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-10-28 08:35:50,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:35:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-10-28 08:35:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 08:35:51,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:51,000 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:51,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:35:51,001 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:51,001 INFO L82 PathProgramCache]: Analyzing trace with hash 452753840, now seen corresponding path program 1 times [2020-10-28 08:35:51,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:51,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418570632] [2020-10-28 08:35:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:51,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:51,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:51,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 08:35:51,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:51,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 08:35:51,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:51,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:35:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 08:35:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:51,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:51,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:51,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:51,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:35:51,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:51,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:51,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:51,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 08:35:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:51,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:51,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:51,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:51,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:35:51,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:51,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:35:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:35:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:51,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418570632] [2020-10-28 08:35:51,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:51,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:35:51,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142972286] [2020-10-28 08:35:51,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:35:51,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:51,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:35:51,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:35:51,267 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 8 states. [2020-10-28 08:35:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:51,408 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-28 08:35:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:35:51,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-28 08:35:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:51,410 INFO L225 Difference]: With dead ends: 59 [2020-10-28 08:35:51,410 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 08:35:51,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:35:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 08:35:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 08:35:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 08:35:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-28 08:35:51,427 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 29 [2020-10-28 08:35:51,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:51,427 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-28 08:35:51,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:35:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-28 08:35:51,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 08:35:51,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:51,431 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:51,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:35:51,432 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:51,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:51,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1814112047, now seen corresponding path program 5 times [2020-10-28 08:35:51,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:51,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525265984] [2020-10-28 08:35:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:51,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:51,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:51,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:52,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:52,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:54,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:54,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 08:35:54,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 08:35:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3402 [2020-10-28 08:35:54,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:54,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:35:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:35:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 08:35:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:54,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:54,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:54,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:54,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:35:54,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:54,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:54,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:35:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:54,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:35:54,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:35:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:55,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525265984] [2020-10-28 08:35:55,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:55,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:35:55,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137227046] [2020-10-28 08:35:55,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:35:55,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:55,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:35:55,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:35:55,002 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-10-28 08:35:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:55,300 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-10-28 08:35:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:35:55,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-28 08:35:55,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:55,302 INFO L225 Difference]: With dead ends: 74 [2020-10-28 08:35:55,302 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 08:35:55,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:35:55,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 08:35:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2020-10-28 08:35:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 08:35:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-28 08:35:55,312 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 29 [2020-10-28 08:35:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:55,312 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-28 08:35:55,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:35:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-28 08:35:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 08:35:55,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:55,313 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:55,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:35:55,314 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:55,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:55,314 INFO L82 PathProgramCache]: Analyzing trace with hash -24815739, now seen corresponding path program 5 times [2020-10-28 08:35:55,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:55,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036282604] [2020-10-28 08:35:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:56,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:56,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:35:56,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:35:56,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-28 08:35:56,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:56,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:35:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 08:35:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:56,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:56,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:56,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:56,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:35:56,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:56,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:56,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036282604] [2020-10-28 08:35:56,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:56,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:35:56,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064483543] [2020-10-28 08:35:56,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:35:56,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:56,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:35:56,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:35:56,629 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 15 states. [2020-10-28 08:35:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:57,420 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-28 08:35:57,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:35:57,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2020-10-28 08:35:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:57,426 INFO L225 Difference]: With dead ends: 64 [2020-10-28 08:35:57,426 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 08:35:57,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:35:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 08:35:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2020-10-28 08:35:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 08:35:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 08:35:57,442 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 30 [2020-10-28 08:35:57,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:57,442 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 08:35:57,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:35:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 08:35:57,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 08:35:57,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:57,444 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:57,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:35:57,444 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:57,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:57,445 INFO L82 PathProgramCache]: Analyzing trace with hash -336531573, now seen corresponding path program 2 times [2020-10-28 08:35:57,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:57,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213171672] [2020-10-28 08:35:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:57,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:57,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:58,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:58,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 08:35:58,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:35:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-28 08:35:58,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:58,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:35:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:35:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 08:35:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:58,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:35:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:58,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:58,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:35:58,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:35:58,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:58,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:35:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:35:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:35:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:58,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:35:58,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:35:58,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:35:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:35:58,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:35:58,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:35:58,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:35:58,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:35:58,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:35:58,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:35:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:35:58,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213171672] [2020-10-28 08:35:58,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:35:58,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:35:58,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110325306] [2020-10-28 08:35:58,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:35:58,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:35:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:35:58,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:35:58,453 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 17 states. [2020-10-28 08:35:59,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:35:59,258 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-28 08:35:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:35:59,259 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2020-10-28 08:35:59,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:35:59,260 INFO L225 Difference]: With dead ends: 63 [2020-10-28 08:35:59,260 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 08:35:59,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:35:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 08:35:59,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-28 08:35:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 08:35:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-28 08:35:59,274 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2020-10-28 08:35:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:35:59,274 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-28 08:35:59,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:35:59,275 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-28 08:35:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 08:35:59,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:35:59,277 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:35:59,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:35:59,277 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:35:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:35:59,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1007675344, now seen corresponding path program 3 times [2020-10-28 08:35:59,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:35:59,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131646852] [2020-10-28 08:35:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:35:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:35:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:35:59,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:00,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:00,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 08:36:00,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:36:00,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-28 08:36:00,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:00,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:36:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:36:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:00,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:00,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:00,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:00,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:00,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:00,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:36:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:00,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:00,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:36:00,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:00,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:36:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:36:00,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:36:00,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131646852] [2020-10-28 08:36:00,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:00,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:36:00,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831802422] [2020-10-28 08:36:00,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:36:00,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:00,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:36:00,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:36:00,549 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 18 states. [2020-10-28 08:36:01,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:01,871 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2020-10-28 08:36:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 08:36:01,871 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 35 [2020-10-28 08:36:01,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:01,872 INFO L225 Difference]: With dead ends: 78 [2020-10-28 08:36:01,872 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 08:36:01,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 08:36:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 08:36:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2020-10-28 08:36:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 08:36:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-10-28 08:36:01,889 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 35 [2020-10-28 08:36:01,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:01,889 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-10-28 08:36:01,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:36:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-10-28 08:36:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 08:36:01,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:01,891 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:01,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:36:01,891 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:01,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:01,891 INFO L82 PathProgramCache]: Analyzing trace with hash 871787, now seen corresponding path program 4 times [2020-10-28 08:36:01,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:01,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386400108] [2020-10-28 08:36:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:03,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:03,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 08:36:03,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:36:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-28 08:36:03,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:03,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 08:36:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 08:36:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:03,893 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2020-10-28 08:36:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:04,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:04,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:04,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:04,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:36:04,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:04,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:04,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:36:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:04,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:04,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:04,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:04,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:36:04,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:04,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:36:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:36:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:36:04,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386400108] [2020-10-28 08:36:04,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:04,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 08:36:04,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312920277] [2020-10-28 08:36:04,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 08:36:04,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:04,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 08:36:04,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:36:04,434 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 20 states. [2020-10-28 08:36:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:06,007 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-10-28 08:36:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 08:36:06,008 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2020-10-28 08:36:06,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:06,009 INFO L225 Difference]: With dead ends: 80 [2020-10-28 08:36:06,009 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 08:36:06,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=234, Invalid=1248, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 08:36:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 08:36:06,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2020-10-28 08:36:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-28 08:36:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-28 08:36:06,024 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 38 [2020-10-28 08:36:06,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:06,024 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-28 08:36:06,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 08:36:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-28 08:36:06,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 08:36:06,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:06,025 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:06,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:36:06,026 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:06,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:06,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1845198705, now seen corresponding path program 5 times [2020-10-28 08:36:06,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:06,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441357688] [2020-10-28 08:36:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 08:36:06,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 08:36:06,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:36:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:06,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 08:36:06,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:06,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:06,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:36:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:06,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:06,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:36:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:06,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:06,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:06,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:06,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 08:36:06,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441357688] [2020-10-28 08:36:06,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:06,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:36:06,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101329664] [2020-10-28 08:36:06,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:36:06,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:06,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:36:06,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:36:06,360 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 10 states. [2020-10-28 08:36:06,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:06,571 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-10-28 08:36:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:36:06,572 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-28 08:36:06,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:06,573 INFO L225 Difference]: With dead ends: 74 [2020-10-28 08:36:06,573 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 08:36:06,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:36:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 08:36:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-28 08:36:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 08:36:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 08:36:06,585 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 40 [2020-10-28 08:36:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:06,585 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 08:36:06,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:36:06,586 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 08:36:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 08:36:06,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:06,586 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:06,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:36:06,587 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:06,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:06,587 INFO L82 PathProgramCache]: Analyzing trace with hash 34890422, now seen corresponding path program 6 times [2020-10-28 08:36:06,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:06,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951999447] [2020-10-28 08:36:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:08,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:08,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 08:36:08,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:36:08,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1562 [2020-10-28 08:36:08,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:08,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 08:36:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 08:36:08,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:08,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:08,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:08,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:08,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:08,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:08,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:08,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:36:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:08,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:36:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:08,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:36:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:36:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:08,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:08,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:08,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:36:08,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:08,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 08:36:08,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951999447] [2020-10-28 08:36:08,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:08,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 08:36:08,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379348577] [2020-10-28 08:36:08,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 08:36:08,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:08,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 08:36:08,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:36:08,632 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 20 states. [2020-10-28 08:36:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:09,715 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-10-28 08:36:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:36:09,716 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2020-10-28 08:36:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:09,717 INFO L225 Difference]: With dead ends: 73 [2020-10-28 08:36:09,717 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 08:36:09,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2020-10-28 08:36:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 08:36:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-28 08:36:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 08:36:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2020-10-28 08:36:09,733 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 43 [2020-10-28 08:36:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:09,734 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2020-10-28 08:36:09,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 08:36:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2020-10-28 08:36:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 08:36:09,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:09,735 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:09,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:36:09,735 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:09,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1045167441, now seen corresponding path program 7 times [2020-10-28 08:36:09,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:09,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897159124] [2020-10-28 08:36:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:09,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:09,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:10,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:10,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:13,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:13,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 08:36:13,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:36:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3370 [2020-10-28 08:36:13,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:13,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 08:36:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 08:36:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:13,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:13,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:13,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:13,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:36:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:13,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:13,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:13,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:13,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:36:13,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:13,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:13,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:36:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:13,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:13,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:13,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:36:13,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:13,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:36:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:36:13,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 08:36:13,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897159124] [2020-10-28 08:36:13,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:13,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 08:36:13,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619574157] [2020-10-28 08:36:13,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 08:36:13,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:13,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 08:36:13,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:36:13,728 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 20 states. [2020-10-28 08:36:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:15,470 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2020-10-28 08:36:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 08:36:15,470 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-10-28 08:36:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:15,472 INFO L225 Difference]: With dead ends: 94 [2020-10-28 08:36:15,472 INFO L226 Difference]: Without dead ends: 91 [2020-10-28 08:36:15,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=215, Invalid=1507, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 08:36:15,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-28 08:36:15,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2020-10-28 08:36:15,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 08:36:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-28 08:36:15,496 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 46 [2020-10-28 08:36:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:15,496 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-28 08:36:15,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 08:36:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-28 08:36:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 08:36:15,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:15,497 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:15,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:36:15,498 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:15,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1716730248, now seen corresponding path program 1 times [2020-10-28 08:36:15,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:15,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651756619] [2020-10-28 08:36:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:15,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:18,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:19,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:20,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 08:36:20,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 08:36:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:36:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:20,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:36:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:36:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:36:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:20,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:20,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:20,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:20,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:36:20,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:20,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:36:20,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:36:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:20,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:20,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:20,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:20,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:20,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:20,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:20,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:36:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:20,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:20,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:20,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:20,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:20,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:20,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:36:20,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651756619] [2020-10-28 08:36:20,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:20,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:36:20,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504827687] [2020-10-28 08:36:20,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:36:20,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:20,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:36:20,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:36:20,680 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 11 states. [2020-10-28 08:36:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:21,036 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2020-10-28 08:36:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:36:21,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-28 08:36:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:21,038 INFO L225 Difference]: With dead ends: 123 [2020-10-28 08:36:21,038 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 08:36:21,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:36:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 08:36:21,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2020-10-28 08:36:21,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 08:36:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-28 08:36:21,056 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 48 [2020-10-28 08:36:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:21,057 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-28 08:36:21,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:36:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-28 08:36:21,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 08:36:21,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:21,058 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:21,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:36:21,058 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:21,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:21,059 INFO L82 PathProgramCache]: Analyzing trace with hash -922969898, now seen corresponding path program 8 times [2020-10-28 08:36:21,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:21,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106670060] [2020-10-28 08:36:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:21,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:22,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:22,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:22,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:26,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:26,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 08:36:26,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:26,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:26,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:26,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:26,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:26,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:26,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:26,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:36:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:26,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:26,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:26,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:26,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:26,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:26,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:26,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:26,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:36:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:26,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:26,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:26,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:26,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:36:26,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:26,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:36:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:36:26,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 08:36:26,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106670060] [2020-10-28 08:36:26,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:26,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 08:36:26,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611791343] [2020-10-28 08:36:26,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 08:36:26,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:26,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 08:36:26,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:36:26,771 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 22 states. [2020-10-28 08:36:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:29,328 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-10-28 08:36:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 08:36:29,329 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 49 [2020-10-28 08:36:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:29,333 INFO L225 Difference]: With dead ends: 116 [2020-10-28 08:36:29,333 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 08:36:29,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=257, Invalid=1905, Unknown=0, NotChecked=0, Total=2162 [2020-10-28 08:36:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 08:36:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 75. [2020-10-28 08:36:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 08:36:29,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-10-28 08:36:29,353 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 49 [2020-10-28 08:36:29,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:29,353 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-10-28 08:36:29,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 08:36:29,353 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-10-28 08:36:29,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 08:36:29,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:29,354 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:29,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:36:29,354 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:29,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:29,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1450874780, now seen corresponding path program 9 times [2020-10-28 08:36:29,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:29,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182901579] [2020-10-28 08:36:29,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:29,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:29,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 08:36:29,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:29,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-28 08:36:29,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:29,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:36:29,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 08:36:29,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:29,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:29,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:36:29,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:29,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:29,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:29,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:36:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:29,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:29,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:29,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:29,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:29,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:29,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:29,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:29,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:29,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:29,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:29,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:29,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:29,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:36:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:29,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:29,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:29,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:29,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:29,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:29,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:29,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:36:29,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182901579] [2020-10-28 08:36:29,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:29,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:36:29,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448962486] [2020-10-28 08:36:29,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:36:29,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:29,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:36:29,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:36:29,798 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 12 states. [2020-10-28 08:36:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:30,051 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2020-10-28 08:36:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:36:30,052 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-28 08:36:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:30,053 INFO L225 Difference]: With dead ends: 89 [2020-10-28 08:36:30,053 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 08:36:30,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:36:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 08:36:30,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-28 08:36:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-28 08:36:30,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-28 08:36:30,067 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 51 [2020-10-28 08:36:30,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:30,067 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-28 08:36:30,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:36:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-28 08:36:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 08:36:30,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:30,068 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:30,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:36:30,069 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:30,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:30,069 INFO L82 PathProgramCache]: Analyzing trace with hash 983864509, now seen corresponding path program 2 times [2020-10-28 08:36:30,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:30,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651288175] [2020-10-28 08:36:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:30,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:30,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:30,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:30,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:31,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:32,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:33,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:35,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:35,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 08:36:35,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 08:36:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 08:36:35,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:35,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:36:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:36:35,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 08:36:35,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:35,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:35,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:35,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:35,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:36:35,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:35,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:35,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:36:35,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:36:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:35,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:35,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:35,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:35,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:35,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:35,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:35,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:36:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:35,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:35,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:35,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:35,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:36:35,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:35,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:36:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:36:35,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651288175] [2020-10-28 08:36:35,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:35,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:36:35,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110608032] [2020-10-28 08:36:35,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:36:35,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:35,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:36:35,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:36:35,302 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 12 states. [2020-10-28 08:36:35,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:35,642 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2020-10-28 08:36:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:36:35,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-28 08:36:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:35,644 INFO L225 Difference]: With dead ends: 122 [2020-10-28 08:36:35,644 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 08:36:35,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:36:35,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 08:36:35,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 62. [2020-10-28 08:36:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 08:36:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-10-28 08:36:35,658 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 51 [2020-10-28 08:36:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:35,658 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-10-28 08:36:35,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:36:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-10-28 08:36:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 08:36:35,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:35,659 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:35,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:36:35,659 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:35,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:35,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1191088945, now seen corresponding path program 10 times [2020-10-28 08:36:35,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:35,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014078052] [2020-10-28 08:36:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:35,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:36,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:38,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:39,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:40,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:40,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 08:36:40,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 08:36:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:36:40,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:40,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 08:36:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 08:36:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:41,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:41,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:41,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:41,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:41,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:36:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:41,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:41,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:41,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:41,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:41,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:36:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:41,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:41,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:41,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:41,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:41,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:41,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 08:36:41,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014078052] [2020-10-28 08:36:41,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:41,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 08:36:41,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953320749] [2020-10-28 08:36:41,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 08:36:41,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:41,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 08:36:41,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:36:41,279 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 21 states. [2020-10-28 08:36:42,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:42,661 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-10-28 08:36:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 08:36:42,662 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2020-10-28 08:36:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:42,663 INFO L225 Difference]: With dead ends: 98 [2020-10-28 08:36:42,663 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 08:36:42,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 08:36:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 08:36:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2020-10-28 08:36:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 08:36:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-10-28 08:36:42,684 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 52 [2020-10-28 08:36:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:42,685 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-10-28 08:36:42,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 08:36:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-10-28 08:36:42,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 08:36:42,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:42,686 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:42,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:36:42,688 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1541891895, now seen corresponding path program 11 times [2020-10-28 08:36:42,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:42,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645676602] [2020-10-28 08:36:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:42,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:47,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:47,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 08:36:47,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:36:47,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:36:47,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:47,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 08:36:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-28 08:36:47,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:48,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:48,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:48,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:48,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:48,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:48,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:48,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:48,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:36:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:48,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:48,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:48,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:36:48,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:48,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:48,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:36:48,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:36:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:48,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:48,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:48,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:36:48,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:48,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:36:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:36:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:48,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:36:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:48,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:48,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:48,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:48,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:48,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:48,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:48,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:48,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:36:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 08:36:48,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645676602] [2020-10-28 08:36:48,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:48,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 08:36:48,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356694710] [2020-10-28 08:36:48,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 08:36:48,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:48,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 08:36:48,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:36:48,370 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 22 states. [2020-10-28 08:36:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:49,703 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-10-28 08:36:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 08:36:49,704 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-28 08:36:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:49,705 INFO L225 Difference]: With dead ends: 91 [2020-10-28 08:36:49,705 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 08:36:49,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 08:36:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 08:36:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-10-28 08:36:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 08:36:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-28 08:36:49,724 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 54 [2020-10-28 08:36:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:49,725 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-28 08:36:49,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 08:36:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-28 08:36:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 08:36:49,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:49,726 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:49,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 08:36:49,726 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:49,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1386566212, now seen corresponding path program 12 times [2020-10-28 08:36:49,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:49,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147012774] [2020-10-28 08:36:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:50,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:51,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:51,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:54,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:54,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 08:36:54,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 08:36:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:36:54,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:54,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 08:36:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:36:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 08:36:54,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:55,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:36:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:55,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:55,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:36:55,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:36:55,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:55,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:55,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:36:55,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:55,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:36:55,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:55,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:36:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:55,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:55,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:55,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:36:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:55,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:55,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:55,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:55,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:55,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:55,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:55,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:36:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:55,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:36:55,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:36:55,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:36:55,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:36:55,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:36:55,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:36:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:36:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:36:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:36:55,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:36:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:36:55,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147012774] [2020-10-28 08:36:55,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:36:55,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 08:36:55,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185676780] [2020-10-28 08:36:55,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 08:36:55,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:36:55,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 08:36:55,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:36:55,365 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 21 states. [2020-10-28 08:36:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:36:56,503 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2020-10-28 08:36:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 08:36:56,503 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-28 08:36:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:36:56,505 INFO L225 Difference]: With dead ends: 116 [2020-10-28 08:36:56,505 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 08:36:56,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 08:36:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 08:36:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 82. [2020-10-28 08:36:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 08:36:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-28 08:36:56,526 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 57 [2020-10-28 08:36:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:36:56,527 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-28 08:36:56,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 08:36:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-28 08:36:56,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 08:36:56,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:36:56,528 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:36:56,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 08:36:56,528 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:36:56,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:36:56,528 INFO L82 PathProgramCache]: Analyzing trace with hash 588651799, now seen corresponding path program 13 times [2020-10-28 08:36:56,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:36:56,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350607118] [2020-10-28 08:36:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:36:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:36:56,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:56,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:58,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:59,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:36:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:00,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:01,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:01,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 08:37:01,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 08:37:01,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:37:01,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:01,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:01,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 08:37:01,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:01,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 08:37:01,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:02,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:02,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:02,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:02,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:02,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:02,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:02,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:37:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:02,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:02,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:02,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:02,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:02,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:02,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:37:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:02,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:02,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:02,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:02,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:02,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:02,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 08:37:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:02,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:02,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:02,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:02,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:02,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:02,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:02,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 95 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:37:02,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350607118] [2020-10-28 08:37:02,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:02,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 08:37:02,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421734494] [2020-10-28 08:37:02,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 08:37:02,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:02,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 08:37:02,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:37:02,307 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 23 states. [2020-10-28 08:37:04,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:04,084 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2020-10-28 08:37:04,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 08:37:04,087 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 60 [2020-10-28 08:37:04,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:04,088 INFO L225 Difference]: With dead ends: 138 [2020-10-28 08:37:04,089 INFO L226 Difference]: Without dead ends: 135 [2020-10-28 08:37:04,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=162, Invalid=1560, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 08:37:04,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-28 08:37:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 83. [2020-10-28 08:37:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:37:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-10-28 08:37:04,110 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 60 [2020-10-28 08:37:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:04,110 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-10-28 08:37:04,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 08:37:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-10-28 08:37:04,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 08:37:04,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:04,111 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:04,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 08:37:04,111 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:04,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:04,112 INFO L82 PathProgramCache]: Analyzing trace with hash -175797475, now seen corresponding path program 14 times [2020-10-28 08:37:04,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:04,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910058947] [2020-10-28 08:37:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:04,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 08:37:04,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-28 08:37:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:04,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:37:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 08:37:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:04,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:04,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:04,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:37:04,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:04,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:04,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:37:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:04,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:04,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:04,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:04,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:04,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:04,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:37:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:04,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:04,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:04,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:04,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:04,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:37:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:04,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:04,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:04,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:04,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:04,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:37:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:04,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 08:37:04,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910058947] [2020-10-28 08:37:04,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:04,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:37:04,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768908024] [2020-10-28 08:37:04,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:37:04,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:04,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:37:04,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:37:04,525 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand 14 states. [2020-10-28 08:37:04,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:04,839 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2020-10-28 08:37:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:37:04,840 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-28 08:37:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:04,842 INFO L225 Difference]: With dead ends: 112 [2020-10-28 08:37:04,842 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 08:37:04,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:37:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 08:37:04,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-28 08:37:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:37:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-28 08:37:04,864 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 62 [2020-10-28 08:37:04,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:04,864 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-28 08:37:04,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:37:04,865 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-28 08:37:04,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 08:37:04,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:04,865 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:04,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 08:37:04,866 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:04,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:04,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1597298494, now seen corresponding path program 3 times [2020-10-28 08:37:04,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:04,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523956656] [2020-10-28 08:37:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:04,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:05,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:05,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:06,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:06,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:07,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:07,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:09,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:09,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 08:37:09,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 08:37:09,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:37:09,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:09,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:37:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:37:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:37:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:10,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:10,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:10,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:10,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:10,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:37:10,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:10,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:37:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:37:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:10,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:10,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:10,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:10,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:10,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:37:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:10,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:10,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:10,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:10,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:37:10,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:10,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:10,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:37:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:10,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:10,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:10,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:10,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:10,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:10,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 6 proven. 92 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 08:37:10,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523956656] [2020-10-28 08:37:10,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:10,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:37:10,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383014324] [2020-10-28 08:37:10,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:37:10,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:10,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:37:10,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:37:10,077 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 13 states. [2020-10-28 08:37:10,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:10,577 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2020-10-28 08:37:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:37:10,578 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-28 08:37:10,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:10,579 INFO L225 Difference]: With dead ends: 157 [2020-10-28 08:37:10,579 INFO L226 Difference]: Without dead ends: 125 [2020-10-28 08:37:10,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:37:10,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-28 08:37:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 85. [2020-10-28 08:37:10,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 08:37:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2020-10-28 08:37:10,597 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 62 [2020-10-28 08:37:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:10,597 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2020-10-28 08:37:10,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:37:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2020-10-28 08:37:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 08:37:10,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:10,598 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:10,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 08:37:10,598 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:10,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:10,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1038504996, now seen corresponding path program 15 times [2020-10-28 08:37:10,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:10,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50616842] [2020-10-28 08:37:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:12,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:15,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 08:37:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 08:37:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:37:15,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:15,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 08:37:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:15,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 08:37:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:16,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:16,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:16,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:16,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:16,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:16,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:16,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:16,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:16,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:16,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:16,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:37:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:16,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:16,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:16,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:16,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:37:16,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:16,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:37:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:37:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:16,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:37:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:16,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:16,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:37:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:16,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:16,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:16,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:16,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:16,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:16,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:16,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:16,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:16,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:16,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:16,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 5 proven. 125 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 08:37:16,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50616842] [2020-10-28 08:37:16,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:16,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 08:37:16,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859758098] [2020-10-28 08:37:16,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 08:37:16,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:16,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 08:37:16,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:37:16,760 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand 28 states. [2020-10-28 08:37:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:19,902 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2020-10-28 08:37:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 08:37:19,903 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 63 [2020-10-28 08:37:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:19,904 INFO L225 Difference]: With dead ends: 117 [2020-10-28 08:37:19,904 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 08:37:19,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=303, Invalid=2049, Unknown=0, NotChecked=0, Total=2352 [2020-10-28 08:37:19,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 08:37:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2020-10-28 08:37:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 08:37:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-10-28 08:37:19,928 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 63 [2020-10-28 08:37:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:19,929 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-10-28 08:37:19,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 08:37:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-10-28 08:37:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 08:37:19,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:19,929 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:19,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 08:37:19,930 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:19,930 INFO L82 PathProgramCache]: Analyzing trace with hash -505381726, now seen corresponding path program 16 times [2020-10-28 08:37:19,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:19,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107338028] [2020-10-28 08:37:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:20,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:20,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:24,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:24,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 08:37:24,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:37:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:37:24,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:24,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 08:37:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 08:37:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:25,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:25,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:25,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:25,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:25,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:25,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:25,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:25,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:37:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:25,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:25,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:25,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:25,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:25,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:25,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:25,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:37:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:25,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:25,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:25,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:25,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:37:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:25,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:25,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:25,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:37:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:25,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:25,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:25,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:25,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:25,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:25,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:25,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:25,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 89 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 08:37:25,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107338028] [2020-10-28 08:37:25,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:25,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 08:37:25,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920638917] [2020-10-28 08:37:25,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 08:37:25,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:25,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 08:37:25,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:37:25,530 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 23 states. [2020-10-28 08:37:26,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:26,696 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-10-28 08:37:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 08:37:26,697 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-10-28 08:37:26,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:26,698 INFO L225 Difference]: With dead ends: 121 [2020-10-28 08:37:26,698 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 08:37:26,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 08:37:26,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 08:37:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2020-10-28 08:37:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 08:37:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2020-10-28 08:37:26,738 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 65 [2020-10-28 08:37:26,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:26,738 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2020-10-28 08:37:26,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 08:37:26,739 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2020-10-28 08:37:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 08:37:26,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:26,740 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:26,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 08:37:26,740 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:26,741 INFO L82 PathProgramCache]: Analyzing trace with hash -854564611, now seen corresponding path program 17 times [2020-10-28 08:37:26,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:26,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108254856] [2020-10-28 08:37:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:26,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:26,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:31,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:31,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 08:37:31,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:37:31,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:37:31,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:31,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 08:37:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 08:37:31,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:32,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:32,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:32,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:32,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:32,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:32,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:32,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:37:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:32,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:32,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:32,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:37:32,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:32,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:37:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:37:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:32,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:37:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:32,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:32,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:32,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:32,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:32,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:32,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 08:37:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:32,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:32,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:32,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:32,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:32,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:37:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:32,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:32,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:32,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:37:32,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:32,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:37:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:37:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 12 proven. 117 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:37:33,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108254856] [2020-10-28 08:37:33,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:33,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 08:37:33,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897593953] [2020-10-28 08:37:33,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 08:37:33,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:33,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 08:37:33,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:37:33,052 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand 28 states. [2020-10-28 08:37:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:36,117 INFO L93 Difference]: Finished difference Result 133 states and 149 transitions. [2020-10-28 08:37:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-28 08:37:36,118 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 68 [2020-10-28 08:37:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:36,120 INFO L225 Difference]: With dead ends: 133 [2020-10-28 08:37:36,120 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 08:37:36,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=232, Invalid=2630, Unknown=0, NotChecked=0, Total=2862 [2020-10-28 08:37:36,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 08:37:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 112. [2020-10-28 08:37:36,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 08:37:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2020-10-28 08:37:36,151 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 68 [2020-10-28 08:37:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:36,151 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2020-10-28 08:37:36,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 08:37:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2020-10-28 08:37:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 08:37:36,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:36,152 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:36,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 08:37:36,153 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:36,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:36,153 INFO L82 PathProgramCache]: Analyzing trace with hash -951100734, now seen corresponding path program 18 times [2020-10-28 08:37:36,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:36,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889805697] [2020-10-28 08:37:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:36,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:36,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:36,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:37,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:41,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:41,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 08:37:41,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 08:37:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:37:41,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:41,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 08:37:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 08:37:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:42,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:42,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:42,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:42,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:42,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:42,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:42,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:42,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:37:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:42,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:42,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:42,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:42,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:37:42,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:42,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:37:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:37:42,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:42,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:37:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:42,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:42,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:42,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:42,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:42,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:37:42,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:42,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:42,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:37:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:37:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:37:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:42,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:42,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:42,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:42,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:42,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:42,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:42,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:42,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 144 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 08:37:42,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889805697] [2020-10-28 08:37:42,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:42,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 08:37:42,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482297287] [2020-10-28 08:37:42,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 08:37:42,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:42,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 08:37:42,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:37:42,803 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand 31 states. [2020-10-28 08:37:44,420 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-28 08:37:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:48,868 INFO L93 Difference]: Finished difference Result 161 states and 184 transitions. [2020-10-28 08:37:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-28 08:37:48,868 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 71 [2020-10-28 08:37:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:48,870 INFO L225 Difference]: With dead ends: 161 [2020-10-28 08:37:48,870 INFO L226 Difference]: Without dead ends: 158 [2020-10-28 08:37:48,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=471, Invalid=5849, Unknown=0, NotChecked=0, Total=6320 [2020-10-28 08:37:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-28 08:37:48,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 128. [2020-10-28 08:37:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 08:37:48,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 146 transitions. [2020-10-28 08:37:48,906 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 146 transitions. Word has length 71 [2020-10-28 08:37:48,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:48,906 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 146 transitions. [2020-10-28 08:37:48,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 08:37:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 146 transitions. [2020-10-28 08:37:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 08:37:48,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:48,907 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:48,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 08:37:48,908 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:48,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:48,908 INFO L82 PathProgramCache]: Analyzing trace with hash 137627016, now seen corresponding path program 19 times [2020-10-28 08:37:48,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:48,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871365144] [2020-10-28 08:37:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:49,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 08:37:49,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-28 08:37:49,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:49,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:37:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:37:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 08:37:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:49,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:49,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:49,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:37:49,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:49,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:49,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:37:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:49,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:49,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:49,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:49,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:49,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:37:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:49,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:49,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:49,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:49,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:49,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:49,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:49,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:49,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:49,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:37:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:49,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:49,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:49,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:49,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:49,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:49,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:37:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:49,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:49,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:49,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:49,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:49,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:49,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:49,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:49,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:49,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:49,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:37:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:49,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:49,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:49,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:49,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:49,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:49,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:49,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:37:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 60 proven. 57 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:37:49,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871365144] [2020-10-28 08:37:49,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:49,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:37:49,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494008648] [2020-10-28 08:37:49,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:37:49,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:37:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:37:49,418 INFO L87 Difference]: Start difference. First operand 128 states and 146 transitions. Second operand 16 states. [2020-10-28 08:37:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:49,818 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2020-10-28 08:37:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:37:49,819 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-10-28 08:37:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:49,821 INFO L225 Difference]: With dead ends: 142 [2020-10-28 08:37:49,821 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 08:37:49,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:37:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 08:37:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-28 08:37:49,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 08:37:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2020-10-28 08:37:49,845 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 73 [2020-10-28 08:37:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:49,845 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2020-10-28 08:37:49,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:37:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2020-10-28 08:37:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 08:37:49,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:49,847 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:49,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 08:37:49,847 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:49,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1062625111, now seen corresponding path program 4 times [2020-10-28 08:37:49,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:49,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932219471] [2020-10-28 08:37:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:50,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:50,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:53,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:53,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:54,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:54,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 08:37:54,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 08:37:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:37:54,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:54,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:37:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:37:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 08:37:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:55,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:37:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:55,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:55,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:37:55,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:55,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:37:55,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:55,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:37:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:37:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:37:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:55,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:37:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:55,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:55,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:55,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:55,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:55,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:55,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:55,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:55,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:55,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:55,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:55,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:37:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:55,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:55,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:55,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:55,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:55,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:55,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:55,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:55,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:55,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:55,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:55,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:37:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:55,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:55,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:55,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:55,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:55,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:55,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:37:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:55,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:55,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:37:55,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:37:55,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:37:55,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:37:55,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:37:55,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:37:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:37:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:37:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:37:55,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:37:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 8 proven. 117 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-28 08:37:55,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932219471] [2020-10-28 08:37:55,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:37:55,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:37:55,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497132747] [2020-10-28 08:37:55,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:37:55,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:37:55,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:37:55,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:37:55,138 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand 14 states. [2020-10-28 08:37:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:37:55,636 INFO L93 Difference]: Finished difference Result 180 states and 206 transitions. [2020-10-28 08:37:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:37:55,637 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-10-28 08:37:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:37:55,639 INFO L225 Difference]: With dead ends: 180 [2020-10-28 08:37:55,639 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 08:37:55,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:37:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 08:37:55,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 107. [2020-10-28 08:37:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 08:37:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2020-10-28 08:37:55,670 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 73 [2020-10-28 08:37:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:37:55,670 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2020-10-28 08:37:55,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:37:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2020-10-28 08:37:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 08:37:55,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:37:55,671 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:37:55,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 08:37:55,671 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:37:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:37:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash 769347293, now seen corresponding path program 20 times [2020-10-28 08:37:55,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:37:55,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857279095] [2020-10-28 08:37:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:37:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:37:55,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:55,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:56,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:56,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:56,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:58,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:58,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:37:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:00,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:00,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 08:38:00,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 08:38:00,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:38:00,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:00,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 08:38:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 08:38:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:02,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:02,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:02,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:02,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:02,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-28 08:38:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:38:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:02,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:02,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:02,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:38:02,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:02,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:38:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:38:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:38:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:02,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:02,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:02,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:02,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:02,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:38:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:02,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:02,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:02,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:02,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:02,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:02,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:02,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:38:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:02,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:02,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:02,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:02,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:02,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:02,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:02,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:02,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:02,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 7 proven. 168 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:38:02,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857279095] [2020-10-28 08:38:02,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:02,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 08:38:02,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141809053] [2020-10-28 08:38:02,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 08:38:02,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:02,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 08:38:02,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2020-10-28 08:38:02,253 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand 31 states. [2020-10-28 08:38:06,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:06,187 INFO L93 Difference]: Finished difference Result 160 states and 184 transitions. [2020-10-28 08:38:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-28 08:38:06,189 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 74 [2020-10-28 08:38:06,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:06,190 INFO L225 Difference]: With dead ends: 160 [2020-10-28 08:38:06,190 INFO L226 Difference]: Without dead ends: 157 [2020-10-28 08:38:06,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=381, Invalid=3525, Unknown=0, NotChecked=0, Total=3906 [2020-10-28 08:38:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-28 08:38:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 108. [2020-10-28 08:38:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 08:38:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2020-10-28 08:38:06,223 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 74 [2020-10-28 08:38:06,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:06,224 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2020-10-28 08:38:06,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 08:38:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2020-10-28 08:38:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 08:38:06,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:06,225 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:06,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 08:38:06,226 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:06,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:06,226 INFO L82 PathProgramCache]: Analyzing trace with hash -74227997, now seen corresponding path program 21 times [2020-10-28 08:38:06,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:06,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991748715] [2020-10-28 08:38:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:06,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:06,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 08:38:11,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:38:11,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:38:11,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:11,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 08:38:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 08:38:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:11,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:11,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:38:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:11,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:11,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:11,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:11,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:11,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:11,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:11,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:38:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:11,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:11,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:11,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:11,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:11,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:11,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:11,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 08:38:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:11,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:11,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:11,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:11,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:11,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:11,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:38:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:11,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:11,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:11,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:38:11,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:11,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:38:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:38:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:38:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:12,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:12,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:12,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:12,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:12,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:12,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:12,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:12,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 131 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 08:38:12,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991748715] [2020-10-28 08:38:12,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:12,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 08:38:12,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242598847] [2020-10-28 08:38:12,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 08:38:12,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:12,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 08:38:12,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:38:12,108 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 25 states. [2020-10-28 08:38:14,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:14,097 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-10-28 08:38:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 08:38:14,098 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 76 [2020-10-28 08:38:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:14,100 INFO L225 Difference]: With dead ends: 127 [2020-10-28 08:38:14,100 INFO L226 Difference]: Without dead ends: 124 [2020-10-28 08:38:14,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 08:38:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-28 08:38:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 108. [2020-10-28 08:38:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-28 08:38:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2020-10-28 08:38:14,145 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 76 [2020-10-28 08:38:14,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:14,146 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2020-10-28 08:38:14,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 08:38:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2020-10-28 08:38:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 08:38:14,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:14,147 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:14,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 08:38:14,148 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1274480124, now seen corresponding path program 5 times [2020-10-28 08:38:14,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:14,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936806662] [2020-10-28 08:38:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:14,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:17,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:19,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 08:38:19,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 08:38:19,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-28 08:38:19,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:19,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:19,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:38:19,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:38:19,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 08:38:19,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:19,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:19,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:19,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:38:19,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:19,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:38:19,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:38:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:19,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:19,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:19,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:19,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:19,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 08:38:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:19,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:19,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:19,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:19,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:19,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:19,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:19,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:38:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:19,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:19,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:38:19,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:19,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:38:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:19,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:19,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:19,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:19,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:19,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 8 proven. 145 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-28 08:38:19,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936806662] [2020-10-28 08:38:19,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:19,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:38:19,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281862264] [2020-10-28 08:38:19,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:38:19,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:19,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:38:19,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:38:19,560 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 15 states. [2020-10-28 08:38:20,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:20,262 INFO L93 Difference]: Finished difference Result 210 states and 244 transitions. [2020-10-28 08:38:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:38:20,263 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2020-10-28 08:38:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:20,264 INFO L225 Difference]: With dead ends: 210 [2020-10-28 08:38:20,265 INFO L226 Difference]: Without dead ends: 174 [2020-10-28 08:38:20,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-28 08:38:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-28 08:38:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 110. [2020-10-28 08:38:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-28 08:38:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2020-10-28 08:38:20,300 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 76 [2020-10-28 08:38:20,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:20,301 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2020-10-28 08:38:20,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:38:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2020-10-28 08:38:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 08:38:20,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:20,302 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:20,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 08:38:20,302 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:20,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:20,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1503190814, now seen corresponding path program 22 times [2020-10-28 08:38:20,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:20,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765013541] [2020-10-28 08:38:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:20,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:25,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:25,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:25,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:25,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:25,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 08:38:25,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 08:38:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 08:38:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:25,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 08:38:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 08:38:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:26,124 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-10-28 08:38:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:27,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:27,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:27,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:27,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:27,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:27,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:27,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:38:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:27,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:27,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:27,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:27,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:27,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:27,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:38:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:27,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:27,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:27,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:27,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 08:38:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:27,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:27,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:27,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:27,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:27,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:27,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 08:38:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:27,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:27,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:27,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:27,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:27,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:27,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:38:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:38:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 16 proven. 188 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:38:27,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765013541] [2020-10-28 08:38:27,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:27,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 08:38:27,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663685490] [2020-10-28 08:38:27,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 08:38:27,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:27,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 08:38:27,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:38:27,265 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 30 states. [2020-10-28 08:38:28,263 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-28 08:38:32,942 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-28 08:38:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:34,372 INFO L93 Difference]: Finished difference Result 191 states and 223 transitions. [2020-10-28 08:38:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-28 08:38:34,372 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 77 [2020-10-28 08:38:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:34,375 INFO L225 Difference]: With dead ends: 191 [2020-10-28 08:38:34,375 INFO L226 Difference]: Without dead ends: 188 [2020-10-28 08:38:34,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1860 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=693, Invalid=6963, Unknown=0, NotChecked=0, Total=7656 [2020-10-28 08:38:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-28 08:38:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 111. [2020-10-28 08:38:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-28 08:38:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-10-28 08:38:34,401 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 77 [2020-10-28 08:38:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:34,401 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-10-28 08:38:34,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 08:38:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-10-28 08:38:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 08:38:34,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:34,402 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:34,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 08:38:34,402 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:34,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:34,403 INFO L82 PathProgramCache]: Analyzing trace with hash -2139962456, now seen corresponding path program 23 times [2020-10-28 08:38:34,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:34,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384742668] [2020-10-28 08:38:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:34,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:34,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:34,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:34,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:35,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:36,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:37,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 08:38:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:41,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:41,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:41,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:41,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:41,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:41,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:41,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:41,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:38:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:41,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:41,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:41,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:41,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:41,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:41,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:38:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:41,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:41,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:41,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:38:41,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:41,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:38:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:41,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:38:41,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:41,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:38:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:41,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:41,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:41,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:41,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:41,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:38:41,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:41,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:41,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:38:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:38:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:38:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:41,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:41,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:41,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:41,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:41,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:41,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:41,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:38:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:41,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:41,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:41,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:41,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:41,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:41,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 164 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-28 08:38:41,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384742668] [2020-10-28 08:38:41,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:41,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 08:38:41,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177745424] [2020-10-28 08:38:41,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 08:38:41,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:41,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 08:38:41,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:38:41,146 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 30 states. [2020-10-28 08:38:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:45,968 INFO L93 Difference]: Finished difference Result 161 states and 186 transitions. [2020-10-28 08:38:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-28 08:38:45,968 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 79 [2020-10-28 08:38:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:45,970 INFO L225 Difference]: With dead ends: 161 [2020-10-28 08:38:45,970 INFO L226 Difference]: Without dead ends: 158 [2020-10-28 08:38:45,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=341, Invalid=4215, Unknown=0, NotChecked=0, Total=4556 [2020-10-28 08:38:45,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-28 08:38:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-10-28 08:38:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 08:38:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2020-10-28 08:38:46,025 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 79 [2020-10-28 08:38:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:46,026 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2020-10-28 08:38:46,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 08:38:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2020-10-28 08:38:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 08:38:46,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:46,028 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:46,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 08:38:46,028 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:46,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:46,029 INFO L82 PathProgramCache]: Analyzing trace with hash 954752713, now seen corresponding path program 6 times [2020-10-28 08:38:46,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:46,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178825662] [2020-10-28 08:38:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:46,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:46,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:51,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 08:38:51,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 08:38:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:38:51,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:51,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:38:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:38:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 08:38:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:51,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:51,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:51,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:38:51,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:51,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:51,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:38:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:51,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:38:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:51,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:51,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:51,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:51,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:51,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:38:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:51,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:51,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:51,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:51,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:51,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:51,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:51,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:38:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:51,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:51,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:51,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:51,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:51,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:51,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:51,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:38:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:51,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:51,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:51,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:38:51,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:51,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:38:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 8 proven. 176 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-28 08:38:51,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178825662] [2020-10-28 08:38:51,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:51,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:38:51,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290458388] [2020-10-28 08:38:51,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:38:51,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:51,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:38:51,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:38:51,386 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand 16 states. [2020-10-28 08:38:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:38:52,191 INFO L93 Difference]: Finished difference Result 240 states and 282 transitions. [2020-10-28 08:38:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:38:52,192 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-28 08:38:52,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:38:52,194 INFO L225 Difference]: With dead ends: 240 [2020-10-28 08:38:52,194 INFO L226 Difference]: Without dead ends: 204 [2020-10-28 08:38:52,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:38:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-28 08:38:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 128. [2020-10-28 08:38:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 08:38:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-10-28 08:38:52,227 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 79 [2020-10-28 08:38:52,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:38:52,227 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-10-28 08:38:52,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:38:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-10-28 08:38:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 08:38:52,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:38:52,229 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:38:52,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 08:38:52,229 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:38:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:38:52,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1116449603, now seen corresponding path program 24 times [2020-10-28 08:38:52,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:38:52,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697364900] [2020-10-28 08:38:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:38:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:52,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:54,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:54,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:57,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:57,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 08:38:57,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:38:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:38:57,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:57,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 08:38:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:38:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 08:38:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:38:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:58,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:58,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:38:58,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:58,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:58,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:58,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:38:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:38:58,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:38:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:58,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:58,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:58,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:58,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:38:58,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:58,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:58,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 08:38:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:58,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:58,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:58,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:38:58,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:58,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:38:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:38:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:38:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:59,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:38:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:38:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:38:59,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:38:59,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:38:59,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:38:59,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:38:59,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:38:59,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:38:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:38:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:38:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:38:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:38:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 19 proven. 217 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 08:38:59,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697364900] [2020-10-28 08:38:59,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:38:59,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 08:38:59,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250412317] [2020-10-28 08:38:59,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 08:38:59,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:38:59,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 08:38:59,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 08:38:59,190 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 35 states.