/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:22:35,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:22:35,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:22:35,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:22:35,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:22:35,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:22:35,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:22:35,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:22:35,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:22:35,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:22:35,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:22:35,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:22:35,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:22:35,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:22:35,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:22:35,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:22:35,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:22:35,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:22:35,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:22:35,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:22:35,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:22:35,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:22:35,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:22:35,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:22:35,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:22:35,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:22:35,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:22:35,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:22:35,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:22:35,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:22:35,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:22:35,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:22:35,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:22:35,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:22:35,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:22:35,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:22:35,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:22:35,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:22:35,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:22:35,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:22:35,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:22:35,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:22:35,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:22:35,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:22:35,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:22:35,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:22:35,378 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:22:35,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:22:35,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:22:35,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:22:35,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:22:35,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:22:35,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:22:35,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:22:35,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:22:35,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:22:35,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:22:35,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:22:35,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:22:35,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:22:35,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:22:35,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:22:35,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:22:35,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:22:35,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:22:35,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:22:35,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:22:35,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:22:35,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:22:35,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:22:35,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:22:35,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:22:35,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:22:35,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:22:35,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:22:35,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:22:35,814 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:22:35,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i [2020-10-27 14:22:35,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa47d70df/a9e41817e81344d091f3a62fe5d27e6d/FLAGf9d94929a [2020-10-27 14:22:36,517 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:22:36,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copyInitSum3_ground.i [2020-10-27 14:22:36,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa47d70df/a9e41817e81344d091f3a62fe5d27e6d/FLAGf9d94929a [2020-10-27 14:22:36,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa47d70df/a9e41817e81344d091f3a62fe5d27e6d [2020-10-27 14:22:36,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:22:36,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:22:36,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:36,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:22:36,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:22:36,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5ba39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:36, skipping insertion in model container [2020-10-27 14:22:36,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:36" (1/1) ... [2020-10-27 14:22:36,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:22:36,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:22:37,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:37,119 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:22:37,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:37,157 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:22:37,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37 WrapperNode [2020-10-27 14:22:37,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:37,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:22:37,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:22:37,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:22:37,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (1/1) ... [2020-10-27 14:22:37,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:22:37,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:22:37,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:22:37,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:22:37,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (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 [2020-10-27 14:22:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:22:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:22:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:22:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:22:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:22:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:22:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:22:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:22:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:22:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:22:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:22:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:22:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:22:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:22:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:22:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:22:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:22:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:22:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:22:37,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:22:37,622 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-27 14:22:37,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:37 BoogieIcfgContainer [2020-10-27 14:22:37,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:22:37,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:22:37,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:22:37,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:22:37,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:22:36" (1/3) ... [2020-10-27 14:22:37,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168309af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:37, skipping insertion in model container [2020-10-27 14:22:37,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:37" (2/3) ... [2020-10-27 14:22:37,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168309af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:37, skipping insertion in model container [2020-10-27 14:22:37,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:37" (3/3) ... [2020-10-27 14:22:37,636 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum3_ground.i [2020-10-27 14:22:37,660 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:22:37,670 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:22:37,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:22:37,753 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:22:37,753 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:22:37,754 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:22:37,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:22:37,754 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:22:37,754 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:22:37,754 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:22:37,754 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:22:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 14:22:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:22:37,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:37,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:37,781 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:37,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:37,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1347201846, now seen corresponding path program 1 times [2020-10-27 14:22:37,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:37,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909670408] [2020-10-27 14:22:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:38,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 14:22:38,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:38,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-27 14:22:38,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:22:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:22:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:22:38,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-27 14:22:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:38,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:38,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:38,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:22:38,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:22:38,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909670408] [2020-10-27 14:22:38,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:22:38,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:22:38,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227459498] [2020-10-27 14:22:38,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:22:38,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:38,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:22:38,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:38,702 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-10-27 14:22:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:38,870 INFO L93 Difference]: Finished difference Result 71 states and 101 transitions. [2020-10-27 14:22:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:22:38,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 14:22:38,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:38,881 INFO L225 Difference]: With dead ends: 71 [2020-10-27 14:22:38,881 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:22:38,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:22:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-27 14:22:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:22:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:22:38,935 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2020-10-27 14:22:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:38,935 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:22:38,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:22:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:22:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:22:38,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:38,937 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] [2020-10-27 14:22:38,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:22:38,938 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:38,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1425424922, now seen corresponding path program 1 times [2020-10-27 14:22:38,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:38,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071703279] [2020-10-27 14:22:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:43,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:43,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:22:43,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:22:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:22:43,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:22:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:22:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:22:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:22:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:44,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:44,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:44,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:44,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:44,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:22:44,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:22:44,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071703279] [2020-10-27 14:22:44,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:44,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:22:44,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166726469] [2020-10-27 14:22:44,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:22:44,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:44,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:22:44,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:44,064 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-27 14:22:44,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:44,204 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-10-27 14:22:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:22:44,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-27 14:22:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:44,207 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:22:44,207 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 14:22:44,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 14:22:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-10-27 14:22:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 14:22:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-27 14:22:44,219 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 28 [2020-10-27 14:22:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:44,219 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-27 14:22:44,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:22:44,220 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-27 14:22:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:22:44,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:44,221 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:22:44,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:22:44,222 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:44,223 INFO L82 PathProgramCache]: Analyzing trace with hash -728308642, now seen corresponding path program 2 times [2020-10-27 14:22:44,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:44,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556442145] [2020-10-27 14:22:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:44,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:44,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:46,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:49,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:49,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:22:49,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:22:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:22:49,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:22:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:22:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:22:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:49,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:49,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:49,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:49,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:22:49,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 14:22:49,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556442145] [2020-10-27 14:22:49,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:49,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:22:49,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254444978] [2020-10-27 14:22:49,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:22:49,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:49,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:22:49,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:49,339 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2020-10-27 14:22:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:49,519 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-10-27 14:22:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:22:49,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-27 14:22:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:49,521 INFO L225 Difference]: With dead ends: 81 [2020-10-27 14:22:49,523 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:22:49,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:22:49,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-27 14:22:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:22:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-27 14:22:49,541 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 35 [2020-10-27 14:22:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:49,541 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-27 14:22:49,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:22:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-27 14:22:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 14:22:49,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:49,545 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:22:49,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:22:49,546 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:49,547 INFO L82 PathProgramCache]: Analyzing trace with hash 806831438, now seen corresponding path program 3 times [2020-10-27 14:22:49,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:49,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867764732] [2020-10-27 14:22:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:52,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:54,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:54,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:22:54,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:22:54,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:22:54,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:54,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:22:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 14:22:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:22:54,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 14:22:54,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:54,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:22:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:54,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:22:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:22:54,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867764732] [2020-10-27 14:22:54,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:54,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:22:54,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486081289] [2020-10-27 14:22:54,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:22:54,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:54,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:22:54,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:54,705 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 7 states. [2020-10-27 14:22:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:54,915 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-10-27 14:22:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:22:54,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-27 14:22:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:54,917 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:22:54,917 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 14:22:54,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 14:22:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-27 14:22:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 14:22:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-27 14:22:54,940 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 42 [2020-10-27 14:22:54,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:54,940 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-27 14:22:54,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:22:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-27 14:22:54,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:22:54,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:54,945 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:22:54,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:22:54,945 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:54,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:54,947 INFO L82 PathProgramCache]: Analyzing trace with hash 197932818, now seen corresponding path program 4 times [2020-10-27 14:22:54,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:54,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202928486] [2020-10-27 14:22:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:55,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:55,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:59,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:59,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:22:59,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:22:59,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:22:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:22:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:22:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:00,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:00,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:00,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:00,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:23:00,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:00,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:23:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 14:23:00,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202928486] [2020-10-27 14:23:00,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:00,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:23:00,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114920231] [2020-10-27 14:23:00,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:23:00,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:00,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:23:00,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:23:00,114 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 8 states. [2020-10-27 14:23:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:00,343 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2020-10-27 14:23:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:23:00,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-27 14:23:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:00,345 INFO L225 Difference]: With dead ends: 107 [2020-10-27 14:23:00,345 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 14:23:00,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:23:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 14:23:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-27 14:23:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:23:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-27 14:23:00,364 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 49 [2020-10-27 14:23:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:00,365 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-27 14:23:00,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:23:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-27 14:23:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 14:23:00,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:00,368 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:00,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:23:00,368 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:00,369 INFO L82 PathProgramCache]: Analyzing trace with hash 599583362, now seen corresponding path program 5 times [2020-10-27 14:23:00,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:00,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252315537] [2020-10-27 14:23:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:00,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:05,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:05,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:23:05,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 14:23:05,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:23:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:23:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:23:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:05,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:05,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:05,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:05,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:05,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:23:05,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:23:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-27 14:23:05,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252315537] [2020-10-27 14:23:05,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:05,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:23:05,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484980540] [2020-10-27 14:23:05,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:23:05,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:05,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:23:05,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:23:05,598 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 9 states. [2020-10-27 14:23:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:05,817 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2020-10-27 14:23:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:23:05,818 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-27 14:23:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:05,820 INFO L225 Difference]: With dead ends: 120 [2020-10-27 14:23:05,820 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 14:23:05,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:23:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 14:23:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2020-10-27 14:23:05,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:23:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-27 14:23:05,841 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 56 [2020-10-27 14:23:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:05,841 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-27 14:23:05,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:23:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-27 14:23:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 14:23:05,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:05,845 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:05,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:23:05,846 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:05,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:05,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1437119546, now seen corresponding path program 6 times [2020-10-27 14:23:05,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:05,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587204683] [2020-10-27 14:23:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:05,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:10,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 14:23:10,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:10,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:23:10,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:23:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:23:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:23:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:10,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:10,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:11,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:11,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:11,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:23:11,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:11,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:23:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 14:23:11,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587204683] [2020-10-27 14:23:11,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:11,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:23:11,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9036641] [2020-10-27 14:23:11,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:23:11,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:23:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:11,024 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 10 states. [2020-10-27 14:23:11,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:11,236 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-27 14:23:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:23:11,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-10-27 14:23:11,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:11,237 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:23:11,238 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:23:11,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:11,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:23:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2020-10-27 14:23:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-27 14:23:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-27 14:23:11,255 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 63 [2020-10-27 14:23:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:11,256 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-27 14:23:11,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:23:11,258 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-27 14:23:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:23:11,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:11,260 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:11,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:23:11,260 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:11,262 INFO L82 PathProgramCache]: Analyzing trace with hash -2078789194, now seen corresponding path program 7 times [2020-10-27 14:23:11,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:11,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986954648] [2020-10-27 14:23:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:11,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:11,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:16,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:16,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 14:23:16,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:16,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:23:16,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:23:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:23:16,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:23:16,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:16,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:16,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:16,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:16,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:16,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-27 14:23:16,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986954648] [2020-10-27 14:23:16,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:16,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:23:16,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107789727] [2020-10-27 14:23:16,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:23:16,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:16,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:23:16,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:16,430 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 11 states. [2020-10-27 14:23:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:16,644 INFO L93 Difference]: Finished difference Result 146 states and 157 transitions. [2020-10-27 14:23:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:23:16,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-27 14:23:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:16,645 INFO L225 Difference]: With dead ends: 146 [2020-10-27 14:23:16,646 INFO L226 Difference]: Without dead ends: 85 [2020-10-27 14:23:16,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-27 14:23:16,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2020-10-27 14:23:16,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:23:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-27 14:23:16,654 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 70 [2020-10-27 14:23:16,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:16,655 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-27 14:23:16,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:23:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-27 14:23:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 14:23:16,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:16,656 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:16,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:23:16,657 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:16,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:16,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1586569850, now seen corresponding path program 8 times [2020-10-27 14:23:16,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:16,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753144694] [2020-10-27 14:23:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:16,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:21,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:21,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:21,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 14:23:21,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-27 14:23:21,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:23:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:23:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:23:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:21,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:21,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:21,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:21,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:21,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:21,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-10-27 14:23:21,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753144694] [2020-10-27 14:23:21,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:21,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:23:21,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601891364] [2020-10-27 14:23:21,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:23:21,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:21,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:23:21,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:21,951 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 12 states. [2020-10-27 14:23:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:22,246 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-10-27 14:23:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:23:22,246 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-10-27 14:23:22,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:22,247 INFO L225 Difference]: With dead ends: 159 [2020-10-27 14:23:22,247 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 14:23:22,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 14:23:22,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2020-10-27 14:23:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 14:23:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-27 14:23:22,268 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 77 [2020-10-27 14:23:22,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:22,268 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-27 14:23:22,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:23:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-27 14:23:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 14:23:22,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:22,270 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:22,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:23:22,270 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:22,271 INFO L82 PathProgramCache]: Analyzing trace with hash -522577174, now seen corresponding path program 9 times [2020-10-27 14:23:22,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:22,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537123186] [2020-10-27 14:23:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:27,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:27,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 14:23:27,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 14:23:27,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:23:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:23:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:23:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:27,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:27,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:23:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-27 14:23:27,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537123186] [2020-10-27 14:23:27,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:27,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:23:27,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824608131] [2020-10-27 14:23:27,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:23:27,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:27,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:23:27,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:27,527 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 13 states. [2020-10-27 14:23:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:27,850 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2020-10-27 14:23:27,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:23:27,850 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-10-27 14:23:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:27,851 INFO L225 Difference]: With dead ends: 172 [2020-10-27 14:23:27,851 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 14:23:27,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:27,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 14:23:27,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2020-10-27 14:23:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:23:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-27 14:23:27,866 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 84 [2020-10-27 14:23:27,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:27,867 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-27 14:23:27,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:23:27,870 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-27 14:23:27,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 14:23:27,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:27,872 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:27,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:23:27,872 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1012054830, now seen corresponding path program 10 times [2020-10-27 14:23:27,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:27,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046797844] [2020-10-27 14:23:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:27,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:32,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:32,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 14:23:32,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:32,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:23:32,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:32,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:23:32,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:23:32,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:23:32,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:33,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-27 14:23:33,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046797844] [2020-10-27 14:23:33,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:33,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:23:33,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696538000] [2020-10-27 14:23:33,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:23:33,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:23:33,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:33,108 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 14 states. [2020-10-27 14:23:33,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:33,361 INFO L93 Difference]: Finished difference Result 185 states and 196 transitions. [2020-10-27 14:23:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:23:33,362 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 91 [2020-10-27 14:23:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:33,363 INFO L225 Difference]: With dead ends: 185 [2020-10-27 14:23:33,363 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:23:33,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:23:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-10-27 14:23:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 14:23:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-27 14:23:33,381 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 91 [2020-10-27 14:23:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:33,381 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-27 14:23:33,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:23:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-27 14:23:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 14:23:33,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:33,383 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:33,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:23:33,383 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:33,384 INFO L82 PathProgramCache]: Analyzing trace with hash 87270942, now seen corresponding path program 11 times [2020-10-27 14:23:33,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:33,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450513159] [2020-10-27 14:23:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:33,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:33,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:38,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:23:38,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 14:23:38,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:23:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:23:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:23:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:38,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:38,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:38,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:38,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:38,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-27 14:23:38,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450513159] [2020-10-27 14:23:38,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:38,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:23:38,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016841854] [2020-10-27 14:23:38,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:23:38,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:38,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:23:38,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:38,671 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 15 states. [2020-10-27 14:23:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:39,046 INFO L93 Difference]: Finished difference Result 198 states and 209 transitions. [2020-10-27 14:23:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:23:39,047 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-27 14:23:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:39,049 INFO L225 Difference]: With dead ends: 198 [2020-10-27 14:23:39,049 INFO L226 Difference]: Without dead ends: 113 [2020-10-27 14:23:39,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-27 14:23:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2020-10-27 14:23:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 14:23:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-10-27 14:23:39,056 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 98 [2020-10-27 14:23:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:39,056 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-10-27 14:23:39,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:23:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-10-27 14:23:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 14:23:39,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:39,058 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:39,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:23:39,058 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:39,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:39,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1022694882, now seen corresponding path program 12 times [2020-10-27 14:23:39,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:39,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525016740] [2020-10-27 14:23:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:44,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:44,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 14:23:44,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 14:23:44,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:23:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:23:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:23:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:44,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:44,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:44,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:44,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:44,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:44,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-10-27 14:23:44,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525016740] [2020-10-27 14:23:44,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:44,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:23:44,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387733725] [2020-10-27 14:23:44,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:23:44,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:44,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:23:44,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:44,377 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 16 states. [2020-10-27 14:23:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:44,802 INFO L93 Difference]: Finished difference Result 211 states and 222 transitions. [2020-10-27 14:23:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:23:44,803 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-10-27 14:23:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:44,804 INFO L225 Difference]: With dead ends: 211 [2020-10-27 14:23:44,805 INFO L226 Difference]: Without dead ends: 120 [2020-10-27 14:23:44,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-27 14:23:44,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2020-10-27 14:23:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-27 14:23:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2020-10-27 14:23:44,813 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 105 [2020-10-27 14:23:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:44,813 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2020-10-27 14:23:44,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:23:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2020-10-27 14:23:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 14:23:44,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:44,815 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:44,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:23:44,815 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash -136981678, now seen corresponding path program 13 times [2020-10-27 14:23:44,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:44,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212817854] [2020-10-27 14:23:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:44,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:49,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:49,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 14:23:49,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-27 14:23:49,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:23:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 14:23:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:23:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:50,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:50,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:50,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:50,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:50,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2020-10-27 14:23:50,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212817854] [2020-10-27 14:23:50,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:50,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:23:50,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763832348] [2020-10-27 14:23:50,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:23:50,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:50,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:23:50,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:50,165 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand 17 states. [2020-10-27 14:23:50,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:50,587 INFO L93 Difference]: Finished difference Result 224 states and 235 transitions. [2020-10-27 14:23:50,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:23:50,588 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-27 14:23:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:50,589 INFO L225 Difference]: With dead ends: 224 [2020-10-27 14:23:50,589 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 14:23:50,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:50,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 14:23:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 124. [2020-10-27 14:23:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:23:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-27 14:23:50,597 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 112 [2020-10-27 14:23:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:50,598 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-27 14:23:50,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:23:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-27 14:23:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 14:23:50,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:50,600 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:50,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:23:50,600 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:50,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1085197674, now seen corresponding path program 14 times [2020-10-27 14:23:50,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:50,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351655939] [2020-10-27 14:23:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:55,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:55,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 14:23:55,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-27 14:23:55,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:23:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:23:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:23:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:55,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:55,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:55,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:55,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:55,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:55,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:56,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2020-10-27 14:23:56,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351655939] [2020-10-27 14:23:56,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:56,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:23:56,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379386352] [2020-10-27 14:23:56,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:23:56,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:56,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:23:56,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:56,014 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 18 states. [2020-10-27 14:23:56,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:56,397 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-27 14:23:56,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:23:56,398 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 119 [2020-10-27 14:23:56,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:56,399 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:23:56,399 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 14:23:56,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:56,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 14:23:56,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-27 14:23:56,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 14:23:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2020-10-27 14:23:56,410 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 119 [2020-10-27 14:23:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:56,410 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2020-10-27 14:23:56,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:23:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2020-10-27 14:23:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 14:23:56,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:56,412 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:23:56,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:23:56,412 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:56,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:56,413 INFO L82 PathProgramCache]: Analyzing trace with hash -84827514, now seen corresponding path program 15 times [2020-10-27 14:23:56,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:56,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82896266] [2020-10-27 14:23:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:01,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:01,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 14:24:01,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:01,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 14:24:01,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:24:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:24:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:24:01,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:01,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:01,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:01,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:01,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:01,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:01,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2020-10-27 14:24:01,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82896266] [2020-10-27 14:24:01,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:01,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:24:01,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122280662] [2020-10-27 14:24:01,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:24:01,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:01,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:24:01,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:24:01,872 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand 19 states. [2020-10-27 14:24:02,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:02,324 INFO L93 Difference]: Finished difference Result 250 states and 261 transitions. [2020-10-27 14:24:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:24:02,325 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 126 [2020-10-27 14:24:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:02,327 INFO L225 Difference]: With dead ends: 250 [2020-10-27 14:24:02,327 INFO L226 Difference]: Without dead ends: 141 [2020-10-27 14:24:02,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:24:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-27 14:24:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2020-10-27 14:24:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 14:24:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2020-10-27 14:24:02,336 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 126 [2020-10-27 14:24:02,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:02,336 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions. [2020-10-27 14:24:02,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:24:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2020-10-27 14:24:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 14:24:02,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:02,338 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:02,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:24:02,338 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:02,339 INFO L82 PathProgramCache]: Analyzing trace with hash 130027850, now seen corresponding path program 16 times [2020-10-27 14:24:02,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:02,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761697145] [2020-10-27 14:24:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:07,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:07,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 14:24:07,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:07,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:24:07,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:07,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:24:07,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:24:07,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:24:07,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:07,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:07,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:07,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:07,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:07,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:07,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-27 14:24:07,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761697145] [2020-10-27 14:24:07,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:07,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:24:07,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137728649] [2020-10-27 14:24:07,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:24:07,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:07,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:24:07,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:24:07,749 INFO L87 Difference]: Start difference. First operand 138 states and 142 transitions. Second operand 20 states. [2020-10-27 14:24:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:08,181 INFO L93 Difference]: Finished difference Result 263 states and 274 transitions. [2020-10-27 14:24:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:24:08,182 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 133 [2020-10-27 14:24:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:08,183 INFO L225 Difference]: With dead ends: 263 [2020-10-27 14:24:08,184 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 14:24:08,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:24:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 14:24:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2020-10-27 14:24:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 14:24:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2020-10-27 14:24:08,193 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 133 [2020-10-27 14:24:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:08,193 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2020-10-27 14:24:08,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:24:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2020-10-27 14:24:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:24:08,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:08,195 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:08,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:24:08,195 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1942481990, now seen corresponding path program 17 times [2020-10-27 14:24:08,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:08,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726493800] [2020-10-27 14:24:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:08,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:13,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 14:24:13,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 14:24:13,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:24:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 14:24:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:24:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:13,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:13,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:13,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:13,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:13,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:13,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2020-10-27 14:24:13,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726493800] [2020-10-27 14:24:13,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:13,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:24:13,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061614646] [2020-10-27 14:24:13,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:24:13,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:13,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:24:13,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:13,649 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand 21 states. [2020-10-27 14:24:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:14,092 INFO L93 Difference]: Finished difference Result 276 states and 287 transitions. [2020-10-27 14:24:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:24:14,096 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 140 [2020-10-27 14:24:14,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:14,098 INFO L225 Difference]: With dead ends: 276 [2020-10-27 14:24:14,098 INFO L226 Difference]: Without dead ends: 155 [2020-10-27 14:24:14,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-27 14:24:14,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2020-10-27 14:24:14,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-27 14:24:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2020-10-27 14:24:14,107 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 140 [2020-10-27 14:24:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:14,107 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2020-10-27 14:24:14,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:24:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2020-10-27 14:24:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 14:24:14,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:14,109 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:14,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:24:14,109 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:14,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:14,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1071992322, now seen corresponding path program 18 times [2020-10-27 14:24:14,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:14,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635760890] [2020-10-27 14:24:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:14,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:19,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:19,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 14:24:19,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-27 14:24:19,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:24:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 14:24:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:24:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:19,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:19,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:19,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:19,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:19,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:19,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:19,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:19,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2020-10-27 14:24:19,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635760890] [2020-10-27 14:24:19,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:19,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:24:19,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263397535] [2020-10-27 14:24:19,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:24:19,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:19,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:24:19,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:19,616 INFO L87 Difference]: Start difference. First operand 152 states and 156 transitions. Second operand 22 states. [2020-10-27 14:24:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:20,090 INFO L93 Difference]: Finished difference Result 289 states and 300 transitions. [2020-10-27 14:24:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:24:20,091 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 147 [2020-10-27 14:24:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:20,092 INFO L225 Difference]: With dead ends: 289 [2020-10-27 14:24:20,092 INFO L226 Difference]: Without dead ends: 162 [2020-10-27 14:24:20,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-27 14:24:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2020-10-27 14:24:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-27 14:24:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2020-10-27 14:24:20,107 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 147 [2020-10-27 14:24:20,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:20,107 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2020-10-27 14:24:20,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:24:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2020-10-27 14:24:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 14:24:20,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:20,109 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:20,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:24:20,110 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:20,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1692018414, now seen corresponding path program 19 times [2020-10-27 14:24:20,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:20,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508811008] [2020-10-27 14:24:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:20,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:20,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:20,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:25,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:25,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 14:24:25,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 14:24:25,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:24:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 14:24:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:24:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:25,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:25,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:25,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2020-10-27 14:24:25,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508811008] [2020-10-27 14:24:25,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:25,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:24:25,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829443153] [2020-10-27 14:24:25,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:24:25,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:25,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:24:25,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:25,621 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand 23 states. [2020-10-27 14:24:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:26,110 INFO L93 Difference]: Finished difference Result 302 states and 313 transitions. [2020-10-27 14:24:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:24:26,111 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 154 [2020-10-27 14:24:26,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:26,112 INFO L225 Difference]: With dead ends: 302 [2020-10-27 14:24:26,113 INFO L226 Difference]: Without dead ends: 169 [2020-10-27 14:24:26,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:26,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-27 14:24:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2020-10-27 14:24:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-27 14:24:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 170 transitions. [2020-10-27 14:24:26,126 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 170 transitions. Word has length 154 [2020-10-27 14:24:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:26,127 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 170 transitions. [2020-10-27 14:24:26,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:24:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 170 transitions. [2020-10-27 14:24:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 14:24:26,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:26,129 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:26,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:24:26,129 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash 2008683698, now seen corresponding path program 20 times [2020-10-27 14:24:26,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:26,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924938485] [2020-10-27 14:24:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:26,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:31,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:31,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 14:24:31,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 14:24:31,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:24:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 14:24:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:24:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:31,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:31,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:31,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:24:31,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:31,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2020-10-27 14:24:31,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924938485] [2020-10-27 14:24:31,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:31,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:24:31,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773097700] [2020-10-27 14:24:31,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:24:31,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:31,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:24:31,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:31,670 INFO L87 Difference]: Start difference. First operand 166 states and 170 transitions. Second operand 24 states. [2020-10-27 14:24:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:32,122 INFO L93 Difference]: Finished difference Result 315 states and 326 transitions. [2020-10-27 14:24:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:24:32,122 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 161 [2020-10-27 14:24:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:32,124 INFO L225 Difference]: With dead ends: 315 [2020-10-27 14:24:32,124 INFO L226 Difference]: Without dead ends: 176 [2020-10-27 14:24:32,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:32,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-27 14:24:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2020-10-27 14:24:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-27 14:24:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2020-10-27 14:24:32,134 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 161 [2020-10-27 14:24:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:32,134 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2020-10-27 14:24:32,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:24:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2020-10-27 14:24:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 14:24:32,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:32,137 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:32,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:24:32,137 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:32,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2039012386, now seen corresponding path program 21 times [2020-10-27 14:24:32,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:32,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271100915] [2020-10-27 14:24:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:32,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:32,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:37,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:37,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 14:24:37,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:37,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5278 [2020-10-27 14:24:37,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:24:37,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 14:24:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:24:37,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:37,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:37,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:37,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:37,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:37,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2020-10-27 14:24:37,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271100915] [2020-10-27 14:24:37,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:37,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:24:37,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40830426] [2020-10-27 14:24:37,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:24:37,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:37,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:24:37,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:37,927 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 25 states. [2020-10-27 14:24:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:38,458 INFO L93 Difference]: Finished difference Result 328 states and 339 transitions. [2020-10-27 14:24:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:24:38,462 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 168 [2020-10-27 14:24:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:38,463 INFO L225 Difference]: With dead ends: 328 [2020-10-27 14:24:38,463 INFO L226 Difference]: Without dead ends: 183 [2020-10-27 14:24:38,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-27 14:24:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2020-10-27 14:24:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-27 14:24:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2020-10-27 14:24:38,472 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 168 [2020-10-27 14:24:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:38,472 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 184 transitions. [2020-10-27 14:24:38,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:24:38,473 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 184 transitions. [2020-10-27 14:24:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-27 14:24:38,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:38,474 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:38,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:24:38,475 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:38,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:38,475 INFO L82 PathProgramCache]: Analyzing trace with hash 595016038, now seen corresponding path program 22 times [2020-10-27 14:24:38,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:38,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412772876] [2020-10-27 14:24:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:38,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:43,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:43,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-27 14:24:43,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5181 [2020-10-27 14:24:43,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:24:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 14:24:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:24:43,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2020-10-27 14:24:44,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412772876] [2020-10-27 14:24:44,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:44,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:24:44,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347542550] [2020-10-27 14:24:44,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:24:44,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:24:44,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:44,193 INFO L87 Difference]: Start difference. First operand 180 states and 184 transitions. Second operand 26 states. [2020-10-27 14:24:44,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:44,809 INFO L93 Difference]: Finished difference Result 341 states and 352 transitions. [2020-10-27 14:24:44,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:24:44,810 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 175 [2020-10-27 14:24:44,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:44,812 INFO L225 Difference]: With dead ends: 341 [2020-10-27 14:24:44,812 INFO L226 Difference]: Without dead ends: 190 [2020-10-27 14:24:44,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-27 14:24:44,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2020-10-27 14:24:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-27 14:24:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2020-10-27 14:24:44,823 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 175 [2020-10-27 14:24:44,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:44,823 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2020-10-27 14:24:44,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:24:44,823 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2020-10-27 14:24:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 14:24:44,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:44,825 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:44,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:24:44,826 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:44,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:44,826 INFO L82 PathProgramCache]: Analyzing trace with hash -92982442, now seen corresponding path program 23 times [2020-10-27 14:24:44,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:44,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894596513] [2020-10-27 14:24:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:50,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:50,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 14:24:50,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5440 [2020-10-27 14:24:50,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:24:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 14:24:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:24:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:50,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:50,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:50,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2020-10-27 14:24:50,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894596513] [2020-10-27 14:24:50,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:50,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:24:50,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995736477] [2020-10-27 14:24:50,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:24:50,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:50,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:24:50,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:50,849 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand 27 states. [2020-10-27 14:24:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:51,403 INFO L93 Difference]: Finished difference Result 354 states and 365 transitions. [2020-10-27 14:24:51,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:24:51,404 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 182 [2020-10-27 14:24:51,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:51,405 INFO L225 Difference]: With dead ends: 354 [2020-10-27 14:24:51,405 INFO L226 Difference]: Without dead ends: 197 [2020-10-27 14:24:51,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-27 14:24:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 194. [2020-10-27 14:24:51,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 14:24:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 198 transitions. [2020-10-27 14:24:51,419 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 198 transitions. Word has length 182 [2020-10-27 14:24:51,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:51,420 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 198 transitions. [2020-10-27 14:24:51,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:24:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 198 transitions. [2020-10-27 14:24:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 14:24:51,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:51,422 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:51,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:24:51,424 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:51,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:51,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1649729510, now seen corresponding path program 24 times [2020-10-27 14:24:51,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:51,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847412279] [2020-10-27 14:24:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:56,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 14:24:56,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 14:24:56,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:24:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 14:24:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:24:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:57,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:57,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:57,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:57,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:24:57,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2020-10-27 14:24:57,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847412279] [2020-10-27 14:24:57,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:57,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:24:57,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103278224] [2020-10-27 14:24:57,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:24:57,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:57,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:24:57,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:57,277 INFO L87 Difference]: Start difference. First operand 194 states and 198 transitions. Second operand 28 states. [2020-10-27 14:24:57,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:57,887 INFO L93 Difference]: Finished difference Result 367 states and 378 transitions. [2020-10-27 14:24:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:24:57,887 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 189 [2020-10-27 14:24:57,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:57,889 INFO L225 Difference]: With dead ends: 367 [2020-10-27 14:24:57,889 INFO L226 Difference]: Without dead ends: 204 [2020-10-27 14:24:57,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-27 14:24:57,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2020-10-27 14:24:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-27 14:24:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 205 transitions. [2020-10-27 14:24:57,898 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 205 transitions. Word has length 189 [2020-10-27 14:24:57,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:57,899 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 205 transitions. [2020-10-27 14:24:57,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:24:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 205 transitions. [2020-10-27 14:24:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 14:24:57,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:57,900 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:24:57,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:24:57,901 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:57,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:57,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1397763210, now seen corresponding path program 25 times [2020-10-27 14:24:57,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:57,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857488333] [2020-10-27 14:24:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:03,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:03,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-27 14:25:03,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:03,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5405 [2020-10-27 14:25:03,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:25:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 14:25:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:25:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:03,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:03,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:03,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:03,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 1575 trivial. 0 not checked. [2020-10-27 14:25:03,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857488333] [2020-10-27 14:25:03,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:03,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:25:03,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862370533] [2020-10-27 14:25:03,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:25:03,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:03,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:25:03,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:25:03,960 INFO L87 Difference]: Start difference. First operand 201 states and 205 transitions. Second operand 29 states. [2020-10-27 14:25:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:04,593 INFO L93 Difference]: Finished difference Result 380 states and 391 transitions. [2020-10-27 14:25:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:25:04,594 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 196 [2020-10-27 14:25:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:04,595 INFO L225 Difference]: With dead ends: 380 [2020-10-27 14:25:04,596 INFO L226 Difference]: Without dead ends: 211 [2020-10-27 14:25:04,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:25:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-27 14:25:04,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2020-10-27 14:25:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-27 14:25:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 212 transitions. [2020-10-27 14:25:04,608 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 212 transitions. Word has length 196 [2020-10-27 14:25:04,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:04,609 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 212 transitions. [2020-10-27 14:25:04,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:25:04,609 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 212 transitions. [2020-10-27 14:25:04,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 14:25:04,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:04,611 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:25:04,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:25:04,611 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:04,615 INFO L82 PathProgramCache]: Analyzing trace with hash 640600270, now seen corresponding path program 26 times [2020-10-27 14:25:04,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:04,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289675626] [2020-10-27 14:25:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:04,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:10,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:10,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-27 14:25:10,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5383 [2020-10-27 14:25:10,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:25:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 14:25:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:25:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:10,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:10,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:10,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:10,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:10,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 1703 trivial. 0 not checked. [2020-10-27 14:25:10,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289675626] [2020-10-27 14:25:10,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:10,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:25:10,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328471867] [2020-10-27 14:25:10,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:25:10,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:10,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:25:10,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:25:10,753 INFO L87 Difference]: Start difference. First operand 208 states and 212 transitions. Second operand 30 states. [2020-10-27 14:25:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:11,443 INFO L93 Difference]: Finished difference Result 393 states and 404 transitions. [2020-10-27 14:25:11,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:25:11,443 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 203 [2020-10-27 14:25:11,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:11,445 INFO L225 Difference]: With dead ends: 393 [2020-10-27 14:25:11,445 INFO L226 Difference]: Without dead ends: 218 [2020-10-27 14:25:11,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:25:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-27 14:25:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2020-10-27 14:25:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-27 14:25:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions. [2020-10-27 14:25:11,456 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 203 [2020-10-27 14:25:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:11,456 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions. [2020-10-27 14:25:11,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:25:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions. [2020-10-27 14:25:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 14:25:11,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:11,458 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:25:11,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:25:11,458 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:11,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:11,459 INFO L82 PathProgramCache]: Analyzing trace with hash 726321086, now seen corresponding path program 27 times [2020-10-27 14:25:11,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:11,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586061216] [2020-10-27 14:25:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:11,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:16,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:16,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 14:25:16,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:16,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5271 [2020-10-27 14:25:16,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:25:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 14:25:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:25:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:17,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:17,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:17,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:17,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:25:17,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:17,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2020-10-27 14:25:17,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586061216] [2020-10-27 14:25:17,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:17,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:25:17,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949440005] [2020-10-27 14:25:17,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:25:17,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:17,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:25:17,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:17,529 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand 31 states. [2020-10-27 14:25:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:18,246 INFO L93 Difference]: Finished difference Result 406 states and 417 transitions. [2020-10-27 14:25:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:25:18,247 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 210 [2020-10-27 14:25:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:18,249 INFO L225 Difference]: With dead ends: 406 [2020-10-27 14:25:18,249 INFO L226 Difference]: Without dead ends: 225 [2020-10-27 14:25:18,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-27 14:25:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2020-10-27 14:25:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-27 14:25:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 226 transitions. [2020-10-27 14:25:18,259 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 226 transitions. Word has length 210 [2020-10-27 14:25:18,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:18,260 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 226 transitions. [2020-10-27 14:25:18,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:25:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 226 transitions. [2020-10-27 14:25:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 14:25:18,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:18,261 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:25:18,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:25:18,261 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:18,262 INFO L82 PathProgramCache]: Analyzing trace with hash -497339518, now seen corresponding path program 28 times [2020-10-27 14:25:18,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:18,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253418128] [2020-10-27 14:25:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:23,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:23,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-27 14:25:23,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-27 14:25:23,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:25:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 14:25:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:25:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:24,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:24,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:24,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:24,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:24,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:24,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:24,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2020-10-27 14:25:24,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253418128] [2020-10-27 14:25:24,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:24,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:25:24,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525667235] [2020-10-27 14:25:24,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:25:24,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:24,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:25:24,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:24,238 INFO L87 Difference]: Start difference. First operand 222 states and 226 transitions. Second operand 32 states. [2020-10-27 14:25:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:24,912 INFO L93 Difference]: Finished difference Result 419 states and 430 transitions. [2020-10-27 14:25:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:25:24,913 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 217 [2020-10-27 14:25:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:24,914 INFO L225 Difference]: With dead ends: 419 [2020-10-27 14:25:24,914 INFO L226 Difference]: Without dead ends: 232 [2020-10-27 14:25:24,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-27 14:25:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2020-10-27 14:25:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-27 14:25:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2020-10-27 14:25:24,925 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 217 [2020-10-27 14:25:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:24,926 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2020-10-27 14:25:24,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:25:24,926 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2020-10-27 14:25:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 14:25:24,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:24,928 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:25:24,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:25:24,928 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:24,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:24,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1695941874, now seen corresponding path program 29 times [2020-10-27 14:25:24,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:24,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920984120] [2020-10-27 14:25:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:30,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:30,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 14:25:30,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:30,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5812 [2020-10-27 14:25:30,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:25:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 14:25:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:25:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:31,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:31,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:31,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:31,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:25:31,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2020-10-27 14:25:31,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920984120] [2020-10-27 14:25:31,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:31,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:25:31,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296252596] [2020-10-27 14:25:31,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:25:31,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:31,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:25:31,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:31,628 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 33 states. [2020-10-27 14:25:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:32,380 INFO L93 Difference]: Finished difference Result 432 states and 443 transitions. [2020-10-27 14:25:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:25:32,380 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 224 [2020-10-27 14:25:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:32,382 INFO L225 Difference]: With dead ends: 432 [2020-10-27 14:25:32,382 INFO L226 Difference]: Without dead ends: 239 [2020-10-27 14:25:32,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-27 14:25:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2020-10-27 14:25:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-27 14:25:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 240 transitions. [2020-10-27 14:25:32,393 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 240 transitions. Word has length 224 [2020-10-27 14:25:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:32,393 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 240 transitions. [2020-10-27 14:25:32,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:25:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 240 transitions. [2020-10-27 14:25:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-27 14:25:32,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:32,395 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:25:32,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:25:32,396 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1560895542, now seen corresponding path program 30 times [2020-10-27 14:25:32,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:32,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63172071] [2020-10-27 14:25:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:32,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:37,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:37,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-27 14:25:37,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-27 14:25:37,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:25:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 14:25:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:25:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:38,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:38,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:38,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:25:38,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:38,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2020-10-27 14:25:38,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63172071] [2020-10-27 14:25:38,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:38,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:25:38,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933114408] [2020-10-27 14:25:38,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:25:38,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:38,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:25:38,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:38,427 INFO L87 Difference]: Start difference. First operand 236 states and 240 transitions. Second operand 34 states. [2020-10-27 14:25:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:39,105 INFO L93 Difference]: Finished difference Result 445 states and 456 transitions. [2020-10-27 14:25:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:25:39,106 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 231 [2020-10-27 14:25:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:39,108 INFO L225 Difference]: With dead ends: 445 [2020-10-27 14:25:39,108 INFO L226 Difference]: Without dead ends: 246 [2020-10-27 14:25:39,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:39,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-27 14:25:39,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2020-10-27 14:25:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-27 14:25:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 247 transitions. [2020-10-27 14:25:39,119 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 247 transitions. Word has length 231 [2020-10-27 14:25:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:39,120 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 247 transitions. [2020-10-27 14:25:39,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:25:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 247 transitions. [2020-10-27 14:25:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-27 14:25:39,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:39,122 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:25:39,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:25:39,122 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:39,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:39,122 INFO L82 PathProgramCache]: Analyzing trace with hash 518186022, now seen corresponding path program 31 times [2020-10-27 14:25:39,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:39,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480387316] [2020-10-27 14:25:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:39,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:48,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:48,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 14:25:48,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9133 [2020-10-27 14:25:48,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:25:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 14:25:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:25:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:49,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:49,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:49,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:49,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:49,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:25:49,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2020-10-27 14:25:49,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480387316] [2020-10-27 14:25:49,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:49,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:25:49,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440754648] [2020-10-27 14:25:49,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:25:49,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:49,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:25:49,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:49,273 INFO L87 Difference]: Start difference. First operand 243 states and 247 transitions. Second operand 35 states. [2020-10-27 14:25:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:49,989 INFO L93 Difference]: Finished difference Result 458 states and 469 transitions. [2020-10-27 14:25:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:25:49,990 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 238 [2020-10-27 14:25:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:49,992 INFO L225 Difference]: With dead ends: 458 [2020-10-27 14:25:49,992 INFO L226 Difference]: Without dead ends: 253 [2020-10-27 14:25:49,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-27 14:25:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2020-10-27 14:25:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-27 14:25:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 254 transitions. [2020-10-27 14:25:50,007 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 254 transitions. Word has length 238 [2020-10-27 14:25:50,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:50,008 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 254 transitions. [2020-10-27 14:25:50,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:25:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 254 transitions. [2020-10-27 14:25:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-27 14:25:50,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:50,010 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:25:50,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:25:50,011 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:50,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:50,011 INFO L82 PathProgramCache]: Analyzing trace with hash 110251754, now seen corresponding path program 32 times [2020-10-27 14:25:50,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:50,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720548750] [2020-10-27 14:25:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:50,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:50,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:50,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:56,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:56,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 14:25:56,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:25:56,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5997 [2020-10-27 14:25:56,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:25:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-27 14:25:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:25:56,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:56,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:56,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:56,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:56,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 2576 trivial. 0 not checked. [2020-10-27 14:25:56,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720548750] [2020-10-27 14:25:56,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:56,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:25:56,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366621027] [2020-10-27 14:25:56,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:25:56,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:56,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:25:56,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:56,994 INFO L87 Difference]: Start difference. First operand 250 states and 254 transitions. Second operand 36 states. [2020-10-27 14:25:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:57,840 INFO L93 Difference]: Finished difference Result 471 states and 482 transitions. [2020-10-27 14:25:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:25:57,841 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 245 [2020-10-27 14:25:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:57,843 INFO L225 Difference]: With dead ends: 471 [2020-10-27 14:25:57,843 INFO L226 Difference]: Without dead ends: 260 [2020-10-27 14:25:57,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:57,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-27 14:25:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2020-10-27 14:25:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-27 14:25:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 261 transitions. [2020-10-27 14:25:57,854 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 261 transitions. Word has length 245 [2020-10-27 14:25:57,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:57,854 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 261 transitions. [2020-10-27 14:25:57,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:25:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 261 transitions. [2020-10-27 14:25:57,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 14:25:57,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:57,856 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:25:57,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:25:57,857 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:57,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:57,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1302174374, now seen corresponding path program 33 times [2020-10-27 14:25:57,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:57,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697930972] [2020-10-27 14:25:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:57,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:04,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-27 14:26:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:26:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6372 [2020-10-27 14:26:04,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:04,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 14:26:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 14:26:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:26:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:05,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:05,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:05,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:05,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:26:05,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2020-10-27 14:26:05,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697930972] [2020-10-27 14:26:05,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:05,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:26:05,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781158976] [2020-10-27 14:26:05,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:26:05,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:05,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:26:05,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:26:05,274 INFO L87 Difference]: Start difference. First operand 257 states and 261 transitions. Second operand 37 states. [2020-10-27 14:26:05,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:05,999 INFO L93 Difference]: Finished difference Result 484 states and 495 transitions. [2020-10-27 14:26:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:26:06,000 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 252 [2020-10-27 14:26:06,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:06,002 INFO L225 Difference]: With dead ends: 484 [2020-10-27 14:26:06,002 INFO L226 Difference]: Without dead ends: 267 [2020-10-27 14:26:06,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:26:06,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-27 14:26:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 264. [2020-10-27 14:26:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-27 14:26:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 268 transitions. [2020-10-27 14:26:06,012 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 268 transitions. Word has length 252 [2020-10-27 14:26:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:06,012 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 268 transitions. [2020-10-27 14:26:06,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:26:06,013 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 268 transitions. [2020-10-27 14:26:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-27 14:26:06,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:06,014 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:26:06,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:26:06,015 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:06,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1261502562, now seen corresponding path program 34 times [2020-10-27 14:26:06,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:06,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692263442] [2020-10-27 14:26:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:12,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:12,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 14:26:12,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:26:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5947 [2020-10-27 14:26:12,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 14:26:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-27 14:26:12,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 14:26:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:13,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:13,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:13,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:13,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 2907 trivial. 0 not checked. [2020-10-27 14:26:13,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692263442] [2020-10-27 14:26:13,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:13,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:26:13,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833892199] [2020-10-27 14:26:13,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:26:13,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:13,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:26:13,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:26:13,072 INFO L87 Difference]: Start difference. First operand 264 states and 268 transitions. Second operand 38 states. [2020-10-27 14:26:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:14,029 INFO L93 Difference]: Finished difference Result 497 states and 508 transitions. [2020-10-27 14:26:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:26:14,030 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 259 [2020-10-27 14:26:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:14,032 INFO L225 Difference]: With dead ends: 497 [2020-10-27 14:26:14,032 INFO L226 Difference]: Without dead ends: 274 [2020-10-27 14:26:14,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:26:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-27 14:26:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2020-10-27 14:26:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-27 14:26:14,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 275 transitions. [2020-10-27 14:26:14,043 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 275 transitions. Word has length 259 [2020-10-27 14:26:14,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:14,043 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 275 transitions. [2020-10-27 14:26:14,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:26:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 275 transitions. [2020-10-27 14:26:14,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-27 14:26:14,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:14,045 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:26:14,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:26:14,046 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:14,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:14,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1262122866, now seen corresponding path program 35 times [2020-10-27 14:26:14,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:14,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598011121] [2020-10-27 14:26:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:14,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:19,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:19,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-27 14:26:19,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:26:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:26:19,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 14:26:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 14:26:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:26:19,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:20,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:20,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:20,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:20,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:20,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:20,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:20,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:20,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2020-10-27 14:26:20,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598011121] [2020-10-27 14:26:20,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:20,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 14:26:20,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288768615] [2020-10-27 14:26:20,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 14:26:20,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:20,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 14:26:20,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:26:20,278 INFO L87 Difference]: Start difference. First operand 271 states and 275 transitions. Second operand 39 states. [2020-10-27 14:26:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:21,262 INFO L93 Difference]: Finished difference Result 510 states and 521 transitions. [2020-10-27 14:26:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:26:21,262 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 266 [2020-10-27 14:26:21,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:21,264 INFO L225 Difference]: With dead ends: 510 [2020-10-27 14:26:21,265 INFO L226 Difference]: Without dead ends: 281 [2020-10-27 14:26:21,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:26:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-27 14:26:21,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 278. [2020-10-27 14:26:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-27 14:26:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 282 transitions. [2020-10-27 14:26:21,273 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 282 transitions. Word has length 266 [2020-10-27 14:26:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:21,274 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 282 transitions. [2020-10-27 14:26:21,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 14:26:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 282 transitions. [2020-10-27 14:26:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-27 14:26:21,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:21,276 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:26:21,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:26:21,276 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:21,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:21,277 INFO L82 PathProgramCache]: Analyzing trace with hash 588804690, now seen corresponding path program 36 times [2020-10-27 14:26:21,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:21,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784447892] [2020-10-27 14:26:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:26,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:26,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 14:26:26,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:26:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5345 [2020-10-27 14:26:26,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 14:26:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 14:26:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:26:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:27,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:27,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:27,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:27,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:27,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 3258 trivial. 0 not checked. [2020-10-27 14:26:27,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784447892] [2020-10-27 14:26:27,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:27,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:26:27,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643775189] [2020-10-27 14:26:27,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:26:27,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:27,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:26:27,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:27,913 INFO L87 Difference]: Start difference. First operand 278 states and 282 transitions. Second operand 40 states. [2020-10-27 14:26:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:28,908 INFO L93 Difference]: Finished difference Result 523 states and 534 transitions. [2020-10-27 14:26:28,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:26:28,909 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 273 [2020-10-27 14:26:28,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:28,912 INFO L225 Difference]: With dead ends: 523 [2020-10-27 14:26:28,912 INFO L226 Difference]: Without dead ends: 288 [2020-10-27 14:26:28,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-27 14:26:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 285. [2020-10-27 14:26:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-10-27 14:26:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2020-10-27 14:26:28,923 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 273 [2020-10-27 14:26:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:28,923 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2020-10-27 14:26:28,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:26:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2020-10-27 14:26:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-27 14:26:28,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:28,931 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:26:28,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:26:28,932 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:28,932 INFO L82 PathProgramCache]: Analyzing trace with hash -155365950, now seen corresponding path program 37 times [2020-10-27 14:26:28,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:28,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319980335] [2020-10-27 14:26:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking...