/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-examples/standard_init8_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:02:36,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:02:36,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:02:36,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:02:36,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:02:36,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:02:36,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:02:36,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:02:36,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:02:36,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:02:36,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:02:36,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:02:36,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:02:36,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:02:36,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:02:36,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:02:36,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:02:36,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:02:36,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:02:36,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:02:36,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:02:36,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:02:36,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:02:36,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:02:36,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:02:36,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:02:36,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:02:36,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:02:36,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:02:36,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:02:36,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:02:36,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:02:36,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:02:36,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:02:36,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:02:36,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:02:36,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:02:36,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:02:36,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:02:36,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:02:36,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:02:36,218 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 09:02:36,244 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:02:36,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:02:36,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:02:36,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:02:36,246 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:02:36,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:02:36,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:02:36,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:02:36,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:02:36,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:02:36,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:02:36,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:02:36,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:02:36,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:02:36,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:02:36,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:02:36,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:02:36,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:02:36,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:02:36,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:02:36,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:02:36,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:02:36,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:02:36,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:02:36,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:02:36,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:02:36,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:02:36,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:02:36,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:02:36,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:02:36,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:02:36,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:02:36,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:02:36,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:02:36,658 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:02:36,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2020-10-28 09:02:36,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcd498199/341fbdaa7d2e465dae6bc3d0ae2edb1b/FLAGc5e321828 [2020-10-28 09:02:37,498 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:02:37,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init8_ground-2.i [2020-10-28 09:02:37,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcd498199/341fbdaa7d2e465dae6bc3d0ae2edb1b/FLAGc5e321828 [2020-10-28 09:02:37,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcd498199/341fbdaa7d2e465dae6bc3d0ae2edb1b [2020-10-28 09:02:37,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:02:37,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:02:37,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:02:37,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:02:37,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:02:37,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:37" (1/1) ... [2020-10-28 09:02:37,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@823163c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37, skipping insertion in model container [2020-10-28 09:02:37,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:37" (1/1) ... [2020-10-28 09:02:37,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:02:37,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:02:37,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:02:37,891 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:02:37,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:02:37,942 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:02:37,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37 WrapperNode [2020-10-28 09:02:37,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:02:37,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:02:37,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:02:37,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:02:37,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37" (1/1) ... [2020-10-28 09:02:37,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37" (1/1) ... [2020-10-28 09:02:37,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37" (1/1) ... [2020-10-28 09:02:37,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37" (1/1) ... [2020-10-28 09:02:38,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37" (1/1) ... [2020-10-28 09:02:38,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37" (1/1) ... [2020-10-28 09:02:38,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37" (1/1) ... [2020-10-28 09:02:38,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:02:38,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:02:38,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:02:38,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:02:38,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37" (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 09:02:38,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:02:38,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:02:38,119 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:02:38,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:02:38,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:02:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:02:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:02:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:02:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:02:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:02:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:02:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:02:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:02:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:02:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:02:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:02:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:02:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:02:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:02:38,483 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:02:38,484 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-28 09:02:38,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:38 BoogieIcfgContainer [2020-10-28 09:02:38,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:02:38,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:02:38,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:02:38,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:02:38,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:02:37" (1/3) ... [2020-10-28 09:02:38,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e2cb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:38, skipping insertion in model container [2020-10-28 09:02:38,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:37" (2/3) ... [2020-10-28 09:02:38,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e2cb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:38, skipping insertion in model container [2020-10-28 09:02:38,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:38" (3/3) ... [2020-10-28 09:02:38,516 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-2.i [2020-10-28 09:02:38,548 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:02:38,561 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:02:38,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:02:38,639 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:02:38,640 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:02:38,640 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:02:38,640 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:02:38,640 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:02:38,641 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:02:38,641 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:02:38,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:02:38,667 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-28 09:02:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:02:38,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:38,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:38,681 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:38,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1772990658, now seen corresponding path program 1 times [2020-10-28 09:02:38,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:38,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384817115] [2020-10-28 09:02:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:41,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:41,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:02:41,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:02:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2960 [2020-10-28 09:02:41,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:41,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 09:02:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:02:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:42,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:42,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:42,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:02:42,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:42,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:42,036 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 09:02:42,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384817115] [2020-10-28 09:02:42,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:02:42,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:02:42,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638194804] [2020-10-28 09:02:42,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:02:42,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:42,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:02:42,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:02:42,071 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-10-28 09:02:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:42,204 INFO L93 Difference]: Finished difference Result 74 states and 112 transitions. [2020-10-28 09:02:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:02:42,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-28 09:02:42,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:42,214 INFO L225 Difference]: With dead ends: 74 [2020-10-28 09:02:42,215 INFO L226 Difference]: Without dead ends: 34 [2020-10-28 09:02:42,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:02:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-28 09:02:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-28 09:02:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 09:02:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2020-10-28 09:02:42,262 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 29 [2020-10-28 09:02:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:42,263 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-28 09:02:42,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:02:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-10-28 09:02:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:02:42,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:42,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:42,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:02:42,265 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:42,266 INFO L82 PathProgramCache]: Analyzing trace with hash -474542150, now seen corresponding path program 1 times [2020-10-28 09:02:42,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:42,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636021296] [2020-10-28 09:02:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:42,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:42,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:42,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:47,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:02:47,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:02:47,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4883 [2020-10-28 09:02:47,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:47,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:02:47,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:02:47,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:02:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:47,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:47,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:47,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:47,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:02:47,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:47,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:47,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:02:47,243 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 09:02:47,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636021296] [2020-10-28 09:02:47,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:02:47,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:02:47,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469752989] [2020-10-28 09:02:47,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:02:47,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:47,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:02:47,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:02:47,261 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 4 states. [2020-10-28 09:02:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:47,460 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2020-10-28 09:02:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:02:47,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-28 09:02:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:47,464 INFO L225 Difference]: With dead ends: 69 [2020-10-28 09:02:47,464 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 09:02:47,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:02:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 09:02:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 09:02:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 09:02:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-28 09:02:47,487 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 29 [2020-10-28 09:02:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:47,488 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-28 09:02:47,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:02:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-28 09:02:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 09:02:47,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:47,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:47,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:02:47,491 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:47,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1440650294, now seen corresponding path program 1 times [2020-10-28 09:02:47,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:47,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10073456] [2020-10-28 09:02:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:47,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:47,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:48,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:52,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:52,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 09:02:52,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:02:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:02:52,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:52,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:02:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:02:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:02:52,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:52,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:52,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:52,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:02:52,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:52,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 09:02:52,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10073456] [2020-10-28 09:02:52,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:52,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:02:52,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330934921] [2020-10-28 09:02:52,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:02:52,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:52,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:02:52,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:02:52,582 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2020-10-28 09:02:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:52,741 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-10-28 09:02:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:02:52,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-28 09:02:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:52,743 INFO L225 Difference]: With dead ends: 84 [2020-10-28 09:02:52,743 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 09:02:52,744 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 09:02:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 09:02:52,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-28 09:02:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 09:02:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-28 09:02:52,754 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 37 [2020-10-28 09:02:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:52,754 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-28 09:02:52,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:02:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-28 09:02:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:02:52,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:52,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:52,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:02:52,756 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:52,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1729417274, now seen corresponding path program 2 times [2020-10-28 09:02:52,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:52,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468544543] [2020-10-28 09:02:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:52,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:52,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:52,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:53,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:57,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:57,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 09:02:57,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:02:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:02:57,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:57,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:02:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:02:57,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:02:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:57,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:57,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:57,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:57,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:02:57,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:57,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 09:02:57,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468544543] [2020-10-28 09:02:57,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:57,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:02:57,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116778342] [2020-10-28 09:02:57,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:02:57,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:57,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:02:57,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:02:57,882 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 6 states. [2020-10-28 09:02:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:58,049 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2020-10-28 09:02:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:02:58,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-28 09:02:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:58,051 INFO L225 Difference]: With dead ends: 99 [2020-10-28 09:02:58,051 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 09:02:58,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:02:58,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 09:02:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-28 09:02:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 09:02:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-10-28 09:02:58,061 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 45 [2020-10-28 09:02:58,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:58,061 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-10-28 09:02:58,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:02:58,062 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-10-28 09:02:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 09:02:58,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:58,064 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:58,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:02:58,064 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:58,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:58,065 INFO L82 PathProgramCache]: Analyzing trace with hash 620300470, now seen corresponding path program 3 times [2020-10-28 09:02:58,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:58,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129030289] [2020-10-28 09:02:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:58,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:58,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:58,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:03,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:03,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 09:03:03,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:03:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:03:03,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:03,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:03:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:03:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:03:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:03,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:03,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:03,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:03,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:03,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:03:03,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:03,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-28 09:03:03,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129030289] [2020-10-28 09:03:03,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:03,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:03:03,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975396701] [2020-10-28 09:03:03,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:03:03,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:03,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:03:03,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:03:03,208 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 7 states. [2020-10-28 09:03:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:03,383 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2020-10-28 09:03:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:03:03,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-28 09:03:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:03,385 INFO L225 Difference]: With dead ends: 114 [2020-10-28 09:03:03,385 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 09:03:03,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:03:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 09:03:03,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-28 09:03:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-28 09:03:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-28 09:03:03,395 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 53 [2020-10-28 09:03:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:03,396 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-28 09:03:03,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:03:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-28 09:03:03,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 09:03:03,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:03,398 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:03,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:03:03,398 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:03,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:03,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1183117498, now seen corresponding path program 4 times [2020-10-28 09:03:03,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:03,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129776326] [2020-10-28 09:03:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:03,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:08,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:08,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 09:03:08,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:03:08,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:03:08,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:08,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:03:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 09:03:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:03:08,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:08,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:08,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:08,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:08,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:08,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:08,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:08,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-28 09:03:08,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129776326] [2020-10-28 09:03:08,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:08,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:03:08,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464092596] [2020-10-28 09:03:08,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:03:08,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:08,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:03:08,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:03:08,546 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 8 states. [2020-10-28 09:03:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:08,724 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2020-10-28 09:03:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:03:08,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-28 09:03:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:08,726 INFO L225 Difference]: With dead ends: 129 [2020-10-28 09:03:08,726 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 09:03:08,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:03:08,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 09:03:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-28 09:03:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 09:03:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-10-28 09:03:08,742 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 61 [2020-10-28 09:03:08,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:08,743 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-10-28 09:03:08,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:03:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-10-28 09:03:08,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 09:03:08,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:08,747 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:08,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:03:08,747 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:08,748 INFO L82 PathProgramCache]: Analyzing trace with hash -608395978, now seen corresponding path program 5 times [2020-10-28 09:03:08,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:08,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812044293] [2020-10-28 09:03:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:08,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:08,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:13,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:13,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 09:03:13,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:03:13,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:13,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:03:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:03:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:03:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:13,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:13,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:13,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:13,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:13,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:13,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:13,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:13,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:13,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:03:13,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812044293] [2020-10-28 09:03:13,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:13,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:03:13,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863844123] [2020-10-28 09:03:13,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:03:13,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:13,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:03:13,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:03:13,896 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 9 states. [2020-10-28 09:03:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:14,158 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2020-10-28 09:03:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:03:14,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-28 09:03:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:14,160 INFO L225 Difference]: With dead ends: 144 [2020-10-28 09:03:14,160 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 09:03:14,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:03:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 09:03:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-28 09:03:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 09:03:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-28 09:03:14,173 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 69 [2020-10-28 09:03:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:14,173 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-28 09:03:14,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:03:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-28 09:03:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 09:03:14,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:14,175 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:14,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:03:14,175 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:14,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1558671674, now seen corresponding path program 6 times [2020-10-28 09:03:14,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:14,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364623574] [2020-10-28 09:03:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:14,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:14,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:19,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:19,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 09:03:19,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:03:19,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:19,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:03:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 09:03:19,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:03:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:19,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:19,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:19,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-28 09:03:19,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364623574] [2020-10-28 09:03:19,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:19,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:03:19,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653151502] [2020-10-28 09:03:19,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:03:19,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:19,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:03:19,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:03:19,330 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 10 states. [2020-10-28 09:03:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:19,580 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2020-10-28 09:03:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:03:19,581 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2020-10-28 09:03:19,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:19,582 INFO L225 Difference]: With dead ends: 159 [2020-10-28 09:03:19,582 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 09:03:19,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:03:19,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 09:03:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-28 09:03:19,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 09:03:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-28 09:03:19,595 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 77 [2020-10-28 09:03:19,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:19,596 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-28 09:03:19,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:03:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-28 09:03:19,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 09:03:19,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:19,598 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:19,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:03:19,598 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:19,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:19,599 INFO L82 PathProgramCache]: Analyzing trace with hash -909553226, now seen corresponding path program 7 times [2020-10-28 09:03:19,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:19,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875908385] [2020-10-28 09:03:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:19,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:19,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:19,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:24,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:24,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 09:03:24,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:03:24,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:24,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:03:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:03:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 09:03:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:24,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:24,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:24,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:24,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:24,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:24,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:24,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:24,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:24,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-28 09:03:24,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875908385] [2020-10-28 09:03:24,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:24,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:03:24,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035091064] [2020-10-28 09:03:24,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:03:24,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:24,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:03:24,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:03:24,774 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 11 states. [2020-10-28 09:03:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:25,020 INFO L93 Difference]: Finished difference Result 174 states and 197 transitions. [2020-10-28 09:03:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:03:25,021 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-10-28 09:03:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:25,022 INFO L225 Difference]: With dead ends: 174 [2020-10-28 09:03:25,022 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 09:03:25,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:03:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 09:03:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-28 09:03:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 09:03:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-10-28 09:03:25,048 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 85 [2020-10-28 09:03:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:25,048 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-10-28 09:03:25,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:03:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-10-28 09:03:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 09:03:25,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:25,050 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:25,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:03:25,054 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:25,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:25,054 INFO L82 PathProgramCache]: Analyzing trace with hash 119296442, now seen corresponding path program 8 times [2020-10-28 09:03:25,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:25,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735965026] [2020-10-28 09:03:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:30,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:30,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 09:03:30,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:03:30,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:30,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:03:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:03:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:03:30,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:30,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:30,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:30,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:30,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:30,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:30,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:30,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:30,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:30,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:30,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:30,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-28 09:03:30,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735965026] [2020-10-28 09:03:30,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:30,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:03:30,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32797547] [2020-10-28 09:03:30,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:03:30,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:30,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:03:30,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:03:30,235 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 12 states. [2020-10-28 09:03:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:30,481 INFO L93 Difference]: Finished difference Result 189 states and 212 transitions. [2020-10-28 09:03:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:03:30,482 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-10-28 09:03:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:30,483 INFO L225 Difference]: With dead ends: 189 [2020-10-28 09:03:30,483 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 09:03:30,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:03:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 09:03:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-28 09:03:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-28 09:03:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2020-10-28 09:03:30,503 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 93 [2020-10-28 09:03:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:30,503 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2020-10-28 09:03:30,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:03:30,504 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2020-10-28 09:03:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 09:03:30,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:30,510 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:30,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:03:30,511 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:30,511 INFO L82 PathProgramCache]: Analyzing trace with hash -591452618, now seen corresponding path program 9 times [2020-10-28 09:03:30,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:30,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086265045] [2020-10-28 09:03:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:30,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:35,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 09:03:35,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:03:35,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:35,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:03:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 09:03:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:03:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:35,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:35,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:35,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:35,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:03:35,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:35,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:35,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:03:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-28 09:03:35,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086265045] [2020-10-28 09:03:35,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:35,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:03:35,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333334897] [2020-10-28 09:03:35,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:03:35,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:35,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:03:35,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:03:35,702 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand 13 states. [2020-10-28 09:03:35,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:35,979 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2020-10-28 09:03:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:03:35,979 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-10-28 09:03:35,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:35,980 INFO L225 Difference]: With dead ends: 204 [2020-10-28 09:03:35,980 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 09:03:35,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:03:35,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 09:03:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-10-28 09:03:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 09:03:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2020-10-28 09:03:35,997 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 101 [2020-10-28 09:03:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:35,997 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2020-10-28 09:03:35,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:03:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2020-10-28 09:03:35,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 09:03:35,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:35,999 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:35,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:03:35,999 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:36,001 INFO L82 PathProgramCache]: Analyzing trace with hash 604213818, now seen corresponding path program 10 times [2020-10-28 09:03:36,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:36,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860321833] [2020-10-28 09:03:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:36,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:36,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:41,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:41,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 09:03:41,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:41,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:03:41,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:41,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:03:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:03:41,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:03:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:41,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:41,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:41,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:41,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:41,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:41,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-10-28 09:03:41,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860321833] [2020-10-28 09:03:41,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:41,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:03:41,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429666977] [2020-10-28 09:03:41,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:03:41,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:41,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:03:41,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:03:41,208 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand 14 states. [2020-10-28 09:03:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:41,485 INFO L93 Difference]: Finished difference Result 219 states and 242 transitions. [2020-10-28 09:03:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:03:41,486 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 109 [2020-10-28 09:03:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:41,487 INFO L225 Difference]: With dead ends: 219 [2020-10-28 09:03:41,487 INFO L226 Difference]: Without dead ends: 122 [2020-10-28 09:03:41,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:03:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-28 09:03:41,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-10-28 09:03:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-28 09:03:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2020-10-28 09:03:41,495 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 109 [2020-10-28 09:03:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:41,496 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2020-10-28 09:03:41,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:03:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2020-10-28 09:03:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 09:03:41,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:41,497 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:41,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:03:41,498 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:41,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:41,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1606542666, now seen corresponding path program 11 times [2020-10-28 09:03:41,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:41,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530232523] [2020-10-28 09:03:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:46,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:46,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 09:03:46,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:03:46,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:46,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:03:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 09:03:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 09:03:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:46,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:46,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:46,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:46,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:46,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:46,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:46,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:46,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:46,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-10-28 09:03:46,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530232523] [2020-10-28 09:03:46,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:46,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:03:46,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295049581] [2020-10-28 09:03:46,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:03:46,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:46,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:03:46,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:03:46,731 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 15 states. [2020-10-28 09:03:47,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:47,120 INFO L93 Difference]: Finished difference Result 234 states and 257 transitions. [2020-10-28 09:03:47,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:03:47,120 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 117 [2020-10-28 09:03:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:47,122 INFO L225 Difference]: With dead ends: 234 [2020-10-28 09:03:47,122 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 09:03:47,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:03:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 09:03:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-28 09:03:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 09:03:47,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2020-10-28 09:03:47,137 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 117 [2020-10-28 09:03:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:47,137 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2020-10-28 09:03:47,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:03:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2020-10-28 09:03:47,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 09:03:47,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:47,139 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:47,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:03:47,139 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:47,140 INFO L82 PathProgramCache]: Analyzing trace with hash 343749306, now seen corresponding path program 12 times [2020-10-28 09:03:47,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:47,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824189145] [2020-10-28 09:03:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:52,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:52,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 09:03:52,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:52,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:03:52,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:52,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:03:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:03:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:03:52,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:52,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:52,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:52,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:03:52,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:52,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-28 09:03:52,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824189145] [2020-10-28 09:03:52,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:52,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:03:52,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747290126] [2020-10-28 09:03:52,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:03:52,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:52,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:03:52,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:03:52,396 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 16 states. [2020-10-28 09:03:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:52,786 INFO L93 Difference]: Finished difference Result 249 states and 272 transitions. [2020-10-28 09:03:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:03:52,786 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 125 [2020-10-28 09:03:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:52,788 INFO L225 Difference]: With dead ends: 249 [2020-10-28 09:03:52,788 INFO L226 Difference]: Without dead ends: 138 [2020-10-28 09:03:52,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:03:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-28 09:03:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-28 09:03:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-28 09:03:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2020-10-28 09:03:52,797 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 125 [2020-10-28 09:03:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:52,797 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2020-10-28 09:03:52,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:03:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2020-10-28 09:03:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 09:03:52,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:52,801 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:52,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:03:52,801 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:52,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1038495542, now seen corresponding path program 13 times [2020-10-28 09:03:52,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:52,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781287448] [2020-10-28 09:03:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:52,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:53,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:57,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:57,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 09:03:57,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:03:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:03:57,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:57,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:03:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 09:03:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:03:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:03:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:03:58,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:03:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2020-10-28 09:03:58,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781287448] [2020-10-28 09:03:58,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:03:58,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:03:58,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281867847] [2020-10-28 09:03:58,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:03:58,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:03:58,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:03:58,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:03:58,061 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand 17 states. [2020-10-28 09:03:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:03:58,470 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2020-10-28 09:03:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:03:58,471 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 133 [2020-10-28 09:03:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:03:58,472 INFO L225 Difference]: With dead ends: 264 [2020-10-28 09:03:58,472 INFO L226 Difference]: Without dead ends: 146 [2020-10-28 09:03:58,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:03:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-28 09:03:58,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-28 09:03:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-28 09:03:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2020-10-28 09:03:58,483 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 133 [2020-10-28 09:03:58,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:03:58,483 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2020-10-28 09:03:58,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:03:58,484 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2020-10-28 09:03:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 09:03:58,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:03:58,485 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:03:58,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:03:58,485 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:03:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:03:58,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1150733510, now seen corresponding path program 14 times [2020-10-28 09:03:58,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:03:58,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084165197] [2020-10-28 09:03:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:03:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:03:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:03:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:03,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 09:04:03,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:04:03,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:03,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:04:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 09:04:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:04:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:03,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:03,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:03,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:03,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:03,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:03,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-28 09:04:03,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084165197] [2020-10-28 09:04:03,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:03,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:04:03,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893815793] [2020-10-28 09:04:03,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:04:03,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:03,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:04:03,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:04:03,777 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 18 states. [2020-10-28 09:04:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:04,187 INFO L93 Difference]: Finished difference Result 279 states and 302 transitions. [2020-10-28 09:04:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:04:04,187 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2020-10-28 09:04:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:04,189 INFO L225 Difference]: With dead ends: 279 [2020-10-28 09:04:04,189 INFO L226 Difference]: Without dead ends: 154 [2020-10-28 09:04:04,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:04:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-28 09:04:04,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-28 09:04:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-28 09:04:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2020-10-28 09:04:04,199 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 141 [2020-10-28 09:04:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:04,199 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2020-10-28 09:04:04,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:04:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2020-10-28 09:04:04,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 09:04:04,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:04,201 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:04,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:04:04,201 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:04,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 2102879158, now seen corresponding path program 15 times [2020-10-28 09:04:04,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:04,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796460581] [2020-10-28 09:04:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:04,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:04,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:04,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:09,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:09,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 09:04:09,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:04:09,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:09,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:04:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 09:04:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:04:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:09,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:09,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:09,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:09,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:04:09,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:09,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:09,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:09,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:09,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:09,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-28 09:04:09,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796460581] [2020-10-28 09:04:09,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:09,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:04:09,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492493993] [2020-10-28 09:04:09,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:04:09,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:09,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:04:09,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:04:09,485 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand 19 states. [2020-10-28 09:04:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:09,942 INFO L93 Difference]: Finished difference Result 294 states and 317 transitions. [2020-10-28 09:04:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:04:09,942 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 149 [2020-10-28 09:04:09,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:09,944 INFO L225 Difference]: With dead ends: 294 [2020-10-28 09:04:09,944 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 09:04:09,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:04:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 09:04:09,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-28 09:04:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-28 09:04:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 170 transitions. [2020-10-28 09:04:09,955 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 170 transitions. Word has length 149 [2020-10-28 09:04:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:09,956 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 170 transitions. [2020-10-28 09:04:09,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:04:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 170 transitions. [2020-10-28 09:04:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 09:04:09,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:09,958 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:09,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:04:09,958 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:09,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2108134330, now seen corresponding path program 16 times [2020-10-28 09:04:09,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:09,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471968436] [2020-10-28 09:04:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:10,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:10,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:10,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:15,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:15,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 09:04:15,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:15,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:04:15,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:15,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:04:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 09:04:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:04:15,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:15,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:15,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:15,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:15,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:15,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:04:15,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:15,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:15,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2020-10-28 09:04:15,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471968436] [2020-10-28 09:04:15,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:15,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:04:15,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234407013] [2020-10-28 09:04:15,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:04:15,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:15,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:04:15,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:04:15,297 INFO L87 Difference]: Start difference. First operand 162 states and 170 transitions. Second operand 20 states. [2020-10-28 09:04:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:15,697 INFO L93 Difference]: Finished difference Result 309 states and 332 transitions. [2020-10-28 09:04:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:04:15,698 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 157 [2020-10-28 09:04:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:15,699 INFO L225 Difference]: With dead ends: 309 [2020-10-28 09:04:15,699 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 09:04:15,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:04:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 09:04:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-28 09:04:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-28 09:04:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2020-10-28 09:04:15,709 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 157 [2020-10-28 09:04:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:15,710 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2020-10-28 09:04:15,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:04:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2020-10-28 09:04:15,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 09:04:15,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:15,712 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:15,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:04:15,712 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:15,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1003374538, now seen corresponding path program 17 times [2020-10-28 09:04:15,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:15,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106284182] [2020-10-28 09:04:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:16,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:16,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:20,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:20,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 09:04:20,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 09:04:20,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:20,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:04:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 09:04:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:04:20,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:21,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:21,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:21,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:21,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:21,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:21,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:21,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2020-10-28 09:04:21,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106284182] [2020-10-28 09:04:21,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:21,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:04:21,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802929402] [2020-10-28 09:04:21,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:04:21,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:21,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:04:21,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:04:21,073 INFO L87 Difference]: Start difference. First operand 170 states and 178 transitions. Second operand 21 states. [2020-10-28 09:04:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:21,513 INFO L93 Difference]: Finished difference Result 324 states and 347 transitions. [2020-10-28 09:04:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:04:21,514 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 165 [2020-10-28 09:04:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:21,515 INFO L225 Difference]: With dead ends: 324 [2020-10-28 09:04:21,515 INFO L226 Difference]: Without dead ends: 178 [2020-10-28 09:04:21,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:04:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-28 09:04:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-28 09:04:21,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:04:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 186 transitions. [2020-10-28 09:04:21,525 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 186 transitions. Word has length 165 [2020-10-28 09:04:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:21,526 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 186 transitions. [2020-10-28 09:04:21,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:04:21,526 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 186 transitions. [2020-10-28 09:04:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 09:04:21,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:21,528 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:21,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:04:21,528 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:21,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:21,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1108890682, now seen corresponding path program 18 times [2020-10-28 09:04:21,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:21,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209621041] [2020-10-28 09:04:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:21,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:21,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:26,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 09:04:26,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 09:04:26,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:26,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:04:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 09:04:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:04:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:26,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:26,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2020-10-28 09:04:26,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209621041] [2020-10-28 09:04:26,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:26,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:04:26,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613305740] [2020-10-28 09:04:26,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:04:26,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:26,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:04:26,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:04:26,908 INFO L87 Difference]: Start difference. First operand 178 states and 186 transitions. Second operand 22 states. [2020-10-28 09:04:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:27,323 INFO L93 Difference]: Finished difference Result 339 states and 362 transitions. [2020-10-28 09:04:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:04:27,323 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 173 [2020-10-28 09:04:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:27,325 INFO L225 Difference]: With dead ends: 339 [2020-10-28 09:04:27,325 INFO L226 Difference]: Without dead ends: 186 [2020-10-28 09:04:27,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:04:27,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-28 09:04:27,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-28 09:04:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-28 09:04:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 194 transitions. [2020-10-28 09:04:27,347 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 194 transitions. Word has length 173 [2020-10-28 09:04:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:27,348 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 194 transitions. [2020-10-28 09:04:27,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:04:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 194 transitions. [2020-10-28 09:04:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-28 09:04:27,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:27,352 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:27,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:04:27,352 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:27,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:27,352 INFO L82 PathProgramCache]: Analyzing trace with hash 370486454, now seen corresponding path program 19 times [2020-10-28 09:04:27,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:27,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442029459] [2020-10-28 09:04:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:27,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:27,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:32,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 09:04:32,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:04:32,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:32,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:04:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 09:04:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:04:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:32,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:32,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:32,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:32,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:32,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:32,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2020-10-28 09:04:32,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442029459] [2020-10-28 09:04:32,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:32,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:04:32,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895740750] [2020-10-28 09:04:32,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:04:32,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:32,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:04:32,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:04:32,788 INFO L87 Difference]: Start difference. First operand 186 states and 194 transitions. Second operand 23 states. [2020-10-28 09:04:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:33,187 INFO L93 Difference]: Finished difference Result 354 states and 377 transitions. [2020-10-28 09:04:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:04:33,187 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 181 [2020-10-28 09:04:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:33,189 INFO L225 Difference]: With dead ends: 354 [2020-10-28 09:04:33,189 INFO L226 Difference]: Without dead ends: 194 [2020-10-28 09:04:33,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:04:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-28 09:04:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-28 09:04:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-28 09:04:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2020-10-28 09:04:33,200 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 181 [2020-10-28 09:04:33,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:33,200 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2020-10-28 09:04:33,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:04:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2020-10-28 09:04:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-28 09:04:33,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:33,202 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:33,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:04:33,203 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:33,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:33,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1906013370, now seen corresponding path program 20 times [2020-10-28 09:04:33,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:33,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454080162] [2020-10-28 09:04:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:33,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:38,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 09:04:38,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:38,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:04:38,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:38,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:04:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 09:04:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:04:38,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:38,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:38,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:38,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:38,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:38,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:04:38,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:38,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:38,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:38,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:38,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:38,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2020-10-28 09:04:38,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454080162] [2020-10-28 09:04:38,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:38,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:04:38,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913189454] [2020-10-28 09:04:38,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:04:38,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:38,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:04:38,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:04:38,657 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand 24 states. [2020-10-28 09:04:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:39,174 INFO L93 Difference]: Finished difference Result 369 states and 392 transitions. [2020-10-28 09:04:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:04:39,177 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 189 [2020-10-28 09:04:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:39,179 INFO L225 Difference]: With dead ends: 369 [2020-10-28 09:04:39,179 INFO L226 Difference]: Without dead ends: 202 [2020-10-28 09:04:39,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:04:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-28 09:04:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-28 09:04:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-28 09:04:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2020-10-28 09:04:39,199 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 189 [2020-10-28 09:04:39,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:39,199 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2020-10-28 09:04:39,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:04:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2020-10-28 09:04:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-28 09:04:39,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:39,202 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:39,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:04:39,202 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:39,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:39,203 INFO L82 PathProgramCache]: Analyzing trace with hash 346145078, now seen corresponding path program 21 times [2020-10-28 09:04:39,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:39,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886881887] [2020-10-28 09:04:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:44,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:44,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 09:04:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:04:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:44,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:04:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 09:04:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:04:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:44,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:44,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:44,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:44,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:44,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:44,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:44,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1617 trivial. 0 not checked. [2020-10-28 09:04:44,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886881887] [2020-10-28 09:04:44,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:44,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:04:44,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130162791] [2020-10-28 09:04:44,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:04:44,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:44,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:04:44,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:04:44,690 INFO L87 Difference]: Start difference. First operand 202 states and 210 transitions. Second operand 25 states. [2020-10-28 09:04:45,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:45,244 INFO L93 Difference]: Finished difference Result 384 states and 407 transitions. [2020-10-28 09:04:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:04:45,244 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 197 [2020-10-28 09:04:45,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:45,246 INFO L225 Difference]: With dead ends: 384 [2020-10-28 09:04:45,246 INFO L226 Difference]: Without dead ends: 210 [2020-10-28 09:04:45,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:04:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-28 09:04:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-10-28 09:04:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-28 09:04:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 218 transitions. [2020-10-28 09:04:45,256 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 218 transitions. Word has length 197 [2020-10-28 09:04:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:45,257 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 218 transitions. [2020-10-28 09:04:45,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:04:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 218 transitions. [2020-10-28 09:04:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-28 09:04:45,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:45,258 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:45,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:04:45,259 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:45,259 INFO L82 PathProgramCache]: Analyzing trace with hash -149883590, now seen corresponding path program 22 times [2020-10-28 09:04:45,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:45,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548085560] [2020-10-28 09:04:45,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:45,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:50,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:50,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-28 09:04:50,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 09:04:50,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:50,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:04:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:04:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:04:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:50,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:50,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:50,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:04:50,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:50,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:50,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2020-10-28 09:04:50,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548085560] [2020-10-28 09:04:50,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:50,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:04:50,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837334705] [2020-10-28 09:04:50,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:04:50,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:50,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:04:50,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:04:50,765 INFO L87 Difference]: Start difference. First operand 210 states and 218 transitions. Second operand 26 states. [2020-10-28 09:04:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:51,231 INFO L93 Difference]: Finished difference Result 399 states and 422 transitions. [2020-10-28 09:04:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:04:51,231 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 205 [2020-10-28 09:04:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:51,233 INFO L225 Difference]: With dead ends: 399 [2020-10-28 09:04:51,233 INFO L226 Difference]: Without dead ends: 218 [2020-10-28 09:04:51,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:04:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-28 09:04:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-28 09:04:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-28 09:04:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 226 transitions. [2020-10-28 09:04:51,244 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 226 transitions. Word has length 205 [2020-10-28 09:04:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:51,245 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 226 transitions. [2020-10-28 09:04:51,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:04:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 226 transitions. [2020-10-28 09:04:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 09:04:51,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:51,246 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:51,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:04:51,248 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:51,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:51,249 INFO L82 PathProgramCache]: Analyzing trace with hash -8948298, now seen corresponding path program 23 times [2020-10-28 09:04:51,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:51,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599075162] [2020-10-28 09:04:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:51,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:56,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:56,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-28 09:04:56,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:04:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:04:56,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:56,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:04:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 09:04:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:04:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:04:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:04:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:56,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:04:56,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:04:56,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:04:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:04:56,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:04:56,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:04:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:04:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:04:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:04:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:04:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 1932 trivial. 0 not checked. [2020-10-28 09:04:56,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599075162] [2020-10-28 09:04:56,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:04:56,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:04:56,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186181366] [2020-10-28 09:04:56,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:04:56,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:04:56,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:04:56,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:04:56,915 INFO L87 Difference]: Start difference. First operand 218 states and 226 transitions. Second operand 27 states. [2020-10-28 09:04:57,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:04:57,391 INFO L93 Difference]: Finished difference Result 414 states and 437 transitions. [2020-10-28 09:04:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:04:57,392 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 213 [2020-10-28 09:04:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:04:57,393 INFO L225 Difference]: With dead ends: 414 [2020-10-28 09:04:57,393 INFO L226 Difference]: Without dead ends: 226 [2020-10-28 09:04:57,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:04:57,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-28 09:04:57,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-28 09:04:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-28 09:04:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 234 transitions. [2020-10-28 09:04:57,404 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 234 transitions. Word has length 213 [2020-10-28 09:04:57,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:04:57,405 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 234 transitions. [2020-10-28 09:04:57,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:04:57,405 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 234 transitions. [2020-10-28 09:04:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-28 09:04:57,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:04:57,406 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:04:57,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:04:57,407 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:04:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:04:57,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1062786490, now seen corresponding path program 24 times [2020-10-28 09:04:57,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:04:57,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252302322] [2020-10-28 09:04:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:04:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:04:57,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:57,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:04:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:02,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:02,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 09:05:02,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:02,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:05:02,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:02,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:05:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:05:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:05:02,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:03,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:03,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:03,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:03,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:05:03,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:03,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:03,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:05:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2020-10-28 09:05:03,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252302322] [2020-10-28 09:05:03,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:03,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:05:03,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270105580] [2020-10-28 09:05:03,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:05:03,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:03,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:05:03,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:05:03,113 INFO L87 Difference]: Start difference. First operand 226 states and 234 transitions. Second operand 28 states. [2020-10-28 09:05:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:03,675 INFO L93 Difference]: Finished difference Result 429 states and 452 transitions. [2020-10-28 09:05:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:05:03,675 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 221 [2020-10-28 09:05:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:03,677 INFO L225 Difference]: With dead ends: 429 [2020-10-28 09:05:03,677 INFO L226 Difference]: Without dead ends: 234 [2020-10-28 09:05:03,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:05:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-28 09:05:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-28 09:05:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-28 09:05:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 242 transitions. [2020-10-28 09:05:03,688 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 242 transitions. Word has length 221 [2020-10-28 09:05:03,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:03,688 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 242 transitions. [2020-10-28 09:05:03,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:05:03,689 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 242 transitions. [2020-10-28 09:05:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-28 09:05:03,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:03,690 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:03,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:05:03,691 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:03,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1271510474, now seen corresponding path program 25 times [2020-10-28 09:05:03,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:03,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176571321] [2020-10-28 09:05:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:04,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:08,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:08,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-28 09:05:08,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:05:08,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:08,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:05:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 09:05:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 09:05:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:09,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:09,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:09,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:09,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:09,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:09,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:09,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:09,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2600 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2020-10-28 09:05:09,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176571321] [2020-10-28 09:05:09,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:09,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 09:05:09,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385619964] [2020-10-28 09:05:09,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 09:05:09,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:09,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 09:05:09,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:05:09,307 INFO L87 Difference]: Start difference. First operand 234 states and 242 transitions. Second operand 29 states. [2020-10-28 09:05:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:09,889 INFO L93 Difference]: Finished difference Result 444 states and 467 transitions. [2020-10-28 09:05:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:05:09,890 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 229 [2020-10-28 09:05:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:09,892 INFO L225 Difference]: With dead ends: 444 [2020-10-28 09:05:09,892 INFO L226 Difference]: Without dead ends: 242 [2020-10-28 09:05:09,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:05:09,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-28 09:05:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-28 09:05:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-28 09:05:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 250 transitions. [2020-10-28 09:05:09,904 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 250 transitions. Word has length 229 [2020-10-28 09:05:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:09,904 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 250 transitions. [2020-10-28 09:05:09,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 09:05:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 250 transitions. [2020-10-28 09:05:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 09:05:09,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:09,906 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:09,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:05:09,906 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash 961746490, now seen corresponding path program 26 times [2020-10-28 09:05:09,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:09,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257543938] [2020-10-28 09:05:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:10,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:15,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:15,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 09:05:15,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 09:05:15,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:15,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:05:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 09:05:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:05:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:15,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:15,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:15,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:15,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:15,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:15,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:15,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:15,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2808 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2457 trivial. 0 not checked. [2020-10-28 09:05:15,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257543938] [2020-10-28 09:05:15,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:15,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:05:15,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835852940] [2020-10-28 09:05:15,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:05:15,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:15,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:05:15,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:05:15,638 INFO L87 Difference]: Start difference. First operand 242 states and 250 transitions. Second operand 30 states. [2020-10-28 09:05:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:16,312 INFO L93 Difference]: Finished difference Result 459 states and 482 transitions. [2020-10-28 09:05:16,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:05:16,313 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 237 [2020-10-28 09:05:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:16,315 INFO L225 Difference]: With dead ends: 459 [2020-10-28 09:05:16,315 INFO L226 Difference]: Without dead ends: 250 [2020-10-28 09:05:16,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:05:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-28 09:05:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-10-28 09:05:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-28 09:05:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 258 transitions. [2020-10-28 09:05:16,326 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 258 transitions. Word has length 237 [2020-10-28 09:05:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:16,327 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 258 transitions. [2020-10-28 09:05:16,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:05:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 258 transitions. [2020-10-28 09:05:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-28 09:05:16,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:16,328 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:16,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:05:16,329 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:16,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:16,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1367458122, now seen corresponding path program 27 times [2020-10-28 09:05:16,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:16,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727382938] [2020-10-28 09:05:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:16,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:17,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:21,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:21,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 09:05:21,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:21,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-28 09:05:21,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:21,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:05:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:05:21,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:05:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:21,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:22,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:22,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:22,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:05:22,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:22,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:22,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3024 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2646 trivial. 0 not checked. [2020-10-28 09:05:22,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727382938] [2020-10-28 09:05:22,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:22,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 09:05:22,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440880121] [2020-10-28 09:05:22,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 09:05:22,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 09:05:22,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:05:22,050 INFO L87 Difference]: Start difference. First operand 250 states and 258 transitions. Second operand 31 states. [2020-10-28 09:05:22,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:22,669 INFO L93 Difference]: Finished difference Result 474 states and 497 transitions. [2020-10-28 09:05:22,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:05:22,670 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 245 [2020-10-28 09:05:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:22,672 INFO L225 Difference]: With dead ends: 474 [2020-10-28 09:05:22,672 INFO L226 Difference]: Without dead ends: 258 [2020-10-28 09:05:22,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:05:22,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-28 09:05:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-10-28 09:05:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-28 09:05:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 266 transitions. [2020-10-28 09:05:22,691 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 266 transitions. Word has length 245 [2020-10-28 09:05:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:22,691 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 266 transitions. [2020-10-28 09:05:22,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 09:05:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 266 transitions. [2020-10-28 09:05:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-28 09:05:22,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:22,694 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:22,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:05:22,694 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:22,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:22,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1440724666, now seen corresponding path program 28 times [2020-10-28 09:05:22,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:22,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475146819] [2020-10-28 09:05:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:23,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:23,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:27,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:27,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 09:05:27,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:27,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 09:05:27,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:27,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:05:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:05:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:05:27,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:28,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:28,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:28,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:05:28,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:28,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:28,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:28,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3248 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 2842 trivial. 0 not checked. [2020-10-28 09:05:28,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475146819] [2020-10-28 09:05:28,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:28,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:05:28,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048961403] [2020-10-28 09:05:28,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:05:28,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:28,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:05:28,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:05:28,466 INFO L87 Difference]: Start difference. First operand 258 states and 266 transitions. Second operand 32 states. [2020-10-28 09:05:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:29,015 INFO L93 Difference]: Finished difference Result 489 states and 512 transitions. [2020-10-28 09:05:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:05:29,015 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 253 [2020-10-28 09:05:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:29,016 INFO L225 Difference]: With dead ends: 489 [2020-10-28 09:05:29,017 INFO L226 Difference]: Without dead ends: 266 [2020-10-28 09:05:29,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:05:29,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-28 09:05:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-28 09:05:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-28 09:05:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 274 transitions. [2020-10-28 09:05:29,031 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 274 transitions. Word has length 253 [2020-10-28 09:05:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:29,032 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 274 transitions. [2020-10-28 09:05:29,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:05:29,032 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 274 transitions. [2020-10-28 09:05:29,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 09:05:29,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:29,034 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:29,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:05:29,034 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash 133124918, now seen corresponding path program 29 times [2020-10-28 09:05:29,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:29,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201540369] [2020-10-28 09:05:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:29,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:29,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:34,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:34,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-28 09:05:34,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 09:05:34,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:34,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:05:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 09:05:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 09:05:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3480 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2020-10-28 09:05:34,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201540369] [2020-10-28 09:05:34,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:34,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 09:05:34,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874073751] [2020-10-28 09:05:34,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 09:05:34,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:34,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 09:05:34,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:05:34,839 INFO L87 Difference]: Start difference. First operand 266 states and 274 transitions. Second operand 33 states. [2020-10-28 09:05:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:35,605 INFO L93 Difference]: Finished difference Result 504 states and 527 transitions. [2020-10-28 09:05:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:05:35,605 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 261 [2020-10-28 09:05:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:35,607 INFO L225 Difference]: With dead ends: 504 [2020-10-28 09:05:35,607 INFO L226 Difference]: Without dead ends: 274 [2020-10-28 09:05:35,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:05:35,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-28 09:05:35,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-28 09:05:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-28 09:05:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 282 transitions. [2020-10-28 09:05:35,618 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 282 transitions. Word has length 261 [2020-10-28 09:05:35,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:35,618 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 282 transitions. [2020-10-28 09:05:35,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 09:05:35,619 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 282 transitions. [2020-10-28 09:05:35,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-28 09:05:35,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:35,620 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:35,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:05:35,621 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:35,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:35,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2015447238, now seen corresponding path program 30 times [2020-10-28 09:05:35,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:35,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051815304] [2020-10-28 09:05:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:35,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:36,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:40,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:40,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-28 09:05:40,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:40,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 09:05:40,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:40,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:05:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 09:05:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:05:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:41,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:41,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:41,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:41,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:41,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:41,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:41,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:41,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:41,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3720 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3255 trivial. 0 not checked. [2020-10-28 09:05:41,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051815304] [2020-10-28 09:05:41,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:41,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:05:41,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186251672] [2020-10-28 09:05:41,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:05:41,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:41,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:05:41,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:05:41,516 INFO L87 Difference]: Start difference. First operand 274 states and 282 transitions. Second operand 34 states. [2020-10-28 09:05:42,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:42,300 INFO L93 Difference]: Finished difference Result 519 states and 542 transitions. [2020-10-28 09:05:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:05:42,301 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 269 [2020-10-28 09:05:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:42,303 INFO L225 Difference]: With dead ends: 519 [2020-10-28 09:05:42,303 INFO L226 Difference]: Without dead ends: 282 [2020-10-28 09:05:42,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:05:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-28 09:05:42,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-28 09:05:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-28 09:05:42,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 290 transitions. [2020-10-28 09:05:42,319 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 290 transitions. Word has length 269 [2020-10-28 09:05:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:42,319 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 290 transitions. [2020-10-28 09:05:42,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:05:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 290 transitions. [2020-10-28 09:05:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-28 09:05:42,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:42,321 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:42,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:05:42,321 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:42,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2015987638, now seen corresponding path program 31 times [2020-10-28 09:05:42,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:42,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341427972] [2020-10-28 09:05:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:47,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:47,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 09:05:47,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 09:05:47,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:47,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:05:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 09:05:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 09:05:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:48,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:48,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:48,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:48,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:05:48,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:48,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:48,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:48,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3968 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2020-10-28 09:05:48,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341427972] [2020-10-28 09:05:48,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:48,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 09:05:48,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428914552] [2020-10-28 09:05:48,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 09:05:48,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:48,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 09:05:48,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:05:48,297 INFO L87 Difference]: Start difference. First operand 282 states and 290 transitions. Second operand 35 states. [2020-10-28 09:05:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:49,178 INFO L93 Difference]: Finished difference Result 534 states and 557 transitions. [2020-10-28 09:05:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:05:49,178 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 277 [2020-10-28 09:05:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:49,180 INFO L225 Difference]: With dead ends: 534 [2020-10-28 09:05:49,180 INFO L226 Difference]: Without dead ends: 290 [2020-10-28 09:05:49,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:05:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-28 09:05:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2020-10-28 09:05:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-28 09:05:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 298 transitions. [2020-10-28 09:05:49,193 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 298 transitions. Word has length 277 [2020-10-28 09:05:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:49,193 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 298 transitions. [2020-10-28 09:05:49,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 09:05:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 298 transitions. [2020-10-28 09:05:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-28 09:05:49,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:49,196 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:49,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:05:49,196 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1144002490, now seen corresponding path program 32 times [2020-10-28 09:05:49,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:49,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604387162] [2020-10-28 09:05:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:50,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:54,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:54,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-28 09:05:54,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:05:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-28 09:05:54,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:54,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:05:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 09:05:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:05:54,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:55,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:05:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:55,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:55,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:05:55,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:05:55,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:05:55,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:05:55,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:05:55,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:05:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:05:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:05:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:05:55,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:05:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2020-10-28 09:05:55,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604387162] [2020-10-28 09:05:55,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:05:55,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:05:55,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569554140] [2020-10-28 09:05:55,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:05:55,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:05:55,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:05:55,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:05:55,146 INFO L87 Difference]: Start difference. First operand 290 states and 298 transitions. Second operand 36 states. [2020-10-28 09:05:55,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:05:55,889 INFO L93 Difference]: Finished difference Result 549 states and 572 transitions. [2020-10-28 09:05:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:05:55,889 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 285 [2020-10-28 09:05:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:05:55,892 INFO L225 Difference]: With dead ends: 549 [2020-10-28 09:05:55,892 INFO L226 Difference]: Without dead ends: 298 [2020-10-28 09:05:55,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:05:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-28 09:05:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-28 09:05:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-28 09:05:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 306 transitions. [2020-10-28 09:05:55,904 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 306 transitions. Word has length 285 [2020-10-28 09:05:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:05:55,904 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 306 transitions. [2020-10-28 09:05:55,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:05:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 306 transitions. [2020-10-28 09:05:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-28 09:05:55,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:05:55,906 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:05:55,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:05:55,906 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:05:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:05:55,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1422711862, now seen corresponding path program 33 times [2020-10-28 09:05:55,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:05:55,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148680557] [2020-10-28 09:05:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:05:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:05:56,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:56,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:05:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:01,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:01,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-28 09:06:01,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:06:01,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 09:06:01,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:01,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-28 09:06:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 09:06:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:06:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:01,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:01,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:01,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:01,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:01,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:01,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:01,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4488 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3927 trivial. 0 not checked. [2020-10-28 09:06:01,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148680557] [2020-10-28 09:06:01,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:01,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-28 09:06:01,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754878337] [2020-10-28 09:06:01,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-28 09:06:01,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:01,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-28 09:06:01,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:06:01,883 INFO L87 Difference]: Start difference. First operand 298 states and 306 transitions. Second operand 37 states. [2020-10-28 09:06:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:02,697 INFO L93 Difference]: Finished difference Result 564 states and 587 transitions. [2020-10-28 09:06:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:06:02,698 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 293 [2020-10-28 09:06:02,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:02,700 INFO L225 Difference]: With dead ends: 564 [2020-10-28 09:06:02,700 INFO L226 Difference]: Without dead ends: 306 [2020-10-28 09:06:02,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:06:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-28 09:06:02,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2020-10-28 09:06:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-28 09:06:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 314 transitions. [2020-10-28 09:06:02,711 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 314 transitions. Word has length 293 [2020-10-28 09:06:02,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:02,711 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 314 transitions. [2020-10-28 09:06:02,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-28 09:06:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 314 transitions. [2020-10-28 09:06:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-28 09:06:02,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:02,714 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:02,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:06:02,714 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:02,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:02,715 INFO L82 PathProgramCache]: Analyzing trace with hash -2118920134, now seen corresponding path program 34 times [2020-10-28 09:06:02,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:02,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850415865] [2020-10-28 09:06:02,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:07,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:07,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-28 09:06:07,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:06:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 09:06:07,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:07,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-28 09:06:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:06:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:06:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:08,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:08,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2020-10-28 09:06:08,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850415865] [2020-10-28 09:06:08,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:08,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-28 09:06:08,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334055900] [2020-10-28 09:06:08,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-28 09:06:08,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:08,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-28 09:06:08,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:06:08,675 INFO L87 Difference]: Start difference. First operand 306 states and 314 transitions. Second operand 38 states. [2020-10-28 09:06:09,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:09,505 INFO L93 Difference]: Finished difference Result 579 states and 602 transitions. [2020-10-28 09:06:09,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:06:09,506 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 301 [2020-10-28 09:06:09,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:09,508 INFO L225 Difference]: With dead ends: 579 [2020-10-28 09:06:09,508 INFO L226 Difference]: Without dead ends: 314 [2020-10-28 09:06:09,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 09:06:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-28 09:06:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2020-10-28 09:06:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-28 09:06:09,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 322 transitions. [2020-10-28 09:06:09,522 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 322 transitions. Word has length 301 [2020-10-28 09:06:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:09,523 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 322 transitions. [2020-10-28 09:06:09,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-28 09:06:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 322 transitions. [2020-10-28 09:06:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 09:06:09,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:09,525 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:09,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:06:09,526 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:09,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:09,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1854320458, now seen corresponding path program 35 times [2020-10-28 09:06:09,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:09,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206735026] [2020-10-28 09:06:09,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:09,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:10,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:14,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:14,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 09:06:14,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:06:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 09:06:14,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:14,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:14,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 09:06:14,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 09:06:14,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 09:06:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:15,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:15,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:15,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:15,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:15,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:15,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:15,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:15,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:15,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:15,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2020-10-28 09:06:15,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206735026] [2020-10-28 09:06:15,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:15,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-28 09:06:15,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921328841] [2020-10-28 09:06:15,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-28 09:06:15,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:15,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-28 09:06:15,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:06:15,530 INFO L87 Difference]: Start difference. First operand 314 states and 322 transitions. Second operand 39 states. [2020-10-28 09:06:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:16,326 INFO L93 Difference]: Finished difference Result 594 states and 617 transitions. [2020-10-28 09:06:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-28 09:06:16,326 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 309 [2020-10-28 09:06:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:16,328 INFO L225 Difference]: With dead ends: 594 [2020-10-28 09:06:16,329 INFO L226 Difference]: Without dead ends: 322 [2020-10-28 09:06:16,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:06:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-28 09:06:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-10-28 09:06:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-28 09:06:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 330 transitions. [2020-10-28 09:06:16,340 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 330 transitions. Word has length 309 [2020-10-28 09:06:16,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:16,340 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 330 transitions. [2020-10-28 09:06:16,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-28 09:06:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 330 transitions. [2020-10-28 09:06:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 09:06:16,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:16,343 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:16,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:06:16,343 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:16,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:16,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1186334534, now seen corresponding path program 36 times [2020-10-28 09:06:16,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:16,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165997961] [2020-10-28 09:06:16,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:16,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:17,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:17,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:21,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:21,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 09:06:21,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:06:21,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 09:06:21,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:21,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:21,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-28 09:06:21,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:06:21,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:06:21,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:22,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:22,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:22,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:22,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:06:22,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:22,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:22,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:22,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:22,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5328 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 4662 trivial. 0 not checked. [2020-10-28 09:06:22,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165997961] [2020-10-28 09:06:22,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:22,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-28 09:06:22,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499423503] [2020-10-28 09:06:22,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-28 09:06:22,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:22,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-28 09:06:22,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 09:06:22,449 INFO L87 Difference]: Start difference. First operand 322 states and 330 transitions. Second operand 40 states. [2020-10-28 09:06:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:23,351 INFO L93 Difference]: Finished difference Result 609 states and 632 transitions. [2020-10-28 09:06:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 09:06:23,352 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 317 [2020-10-28 09:06:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:23,354 INFO L225 Difference]: With dead ends: 609 [2020-10-28 09:06:23,354 INFO L226 Difference]: Without dead ends: 330 [2020-10-28 09:06:23,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 09:06:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-28 09:06:23,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2020-10-28 09:06:23,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-28 09:06:23,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 338 transitions. [2020-10-28 09:06:23,364 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 338 transitions. Word has length 317 [2020-10-28 09:06:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:23,365 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 338 transitions. [2020-10-28 09:06:23,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-28 09:06:23,365 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 338 transitions. [2020-10-28 09:06:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 09:06:23,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:23,367 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:23,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:06:23,367 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:23,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1076959946, now seen corresponding path program 37 times [2020-10-28 09:06:23,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:23,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189030447] [2020-10-28 09:06:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:23,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:23,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:28,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:28,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-28 09:06:28,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:06:28,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 09:06:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:28,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-28 09:06:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:06:28,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 09:06:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:29,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:29,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:29,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:29,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:06:29,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:29,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:29,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5624 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 4921 trivial. 0 not checked. [2020-10-28 09:06:29,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189030447] [2020-10-28 09:06:29,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:29,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-28 09:06:29,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721848938] [2020-10-28 09:06:29,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-28 09:06:29,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:29,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-28 09:06:29,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 09:06:29,485 INFO L87 Difference]: Start difference. First operand 330 states and 338 transitions. Second operand 41 states.